[
{
"id": "authors:8b2nk-0xb26",
"collection": "authors",
"collection_id": "8b2nk-0xb26",
"cite_using_url": "https://authors.library.caltech.edu/records/8b2nk-0xb26",
"type": "article",
"title": "Evidence for a Peak at ~0.3 in the Eccentricity Distribution of Typical Super-Jovian Exoplanets",
"author": [
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888"
},
{
"family_name": "Wang",
"given_name": "Jason",
"orcid": "0000-0003-0774-6502",
"clpid": "Wang-Jason-J"
},
{
"family_name": "Murray-Clay",
"given_name": "Ruth",
"orcid": "0000-0001-5061-0462"
},
{
"family_name": "Macintosh",
"given_name": "Bruce",
"orcid": "0000-0003-1212-7538"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143"
},
{
"family_name": "Fulton",
"given_name": "B.J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
}
],
"abstract": "\n
In this study, we compute completeness-corrected occurrence rates of giant exoplanets as a function of mass, semimajor axis, and eccentricity, using the approximately uniform California Legacy Survey sample of radial velocity-discovered planets published in L. J. Rosenthal et al. We recover the previously detected rise in occurrence with semimajor axis for both lower- and higher-mass subsets of the population out to ∼5 au. When restricting to planets with semimajor axes between 0.1 and 4.5 au (roughly speaking, the “peak” of giant planet occurrence), we find evidence for distinct eccentricity distributions for each of two mass subpopulations. Most strikingly, we observe a peak in the eccentricity distribution of super-Jovian planets (3–20 MJ) at 0.3, which is apparent using two different parameterizations of the eccentricity distribution model. A hierarchical histogram model reveals that ∼92% of posterior samples indicate an elevated occurrence rate of super-Jupiters with modest eccentricities (0.2–0.4) compared to lower or higher eccentricities (i.e., evidence for a moderate eccentricity “peak”), and 99% of samples indicate super-Jupiters with modest eccentricities are more common than those with lower eccentricities (i.e., evidence that moderate eccentricities are more common than low eccentricities). We use a truncated Gaussian model fit to pinpoint the location of the super-Jupiter eccentricity peak with more precision, finding a maximum a posteriori peak location of e = 0.3. This low but elevated characteristic eccentricity could be the result of dynamically hot histories, perhaps involving a giant impacts phase. All analysis code for this project is publicly available on Zenodo (doi: 10.5281/zenodo.18089157) and GitHub: github.com/sblunt/eccentricities.
\n
We present a new analysis of the CWW 89 system as part of the Orbital Architectures of Transiting Massive Exoplanets And Low-mass stars (OATMEAL) survey. The CWW 89 system is a member of the 2.8 Gyr old Ruprecht 147 (NGC 6774) cluster and consists of two stars, CWW 89A (EPIC 219388192) and CWW 89B, with the primary hosting a transiting brown dwarf, CWW 89Ab. We use in-transit, highly precise radial velocity measurements with the Keck Planet Finder to characterize the Rossiter–McLaughlin (RM) effect and measure the projected spin–orbit obliquity \u2223 λ \u2223 = 1.°4 ± 2.°5 and the full 3D spin–orbit obliquity of the brown dwarf to be ψ = 15.1_(−10.9)^(+15.0\u2218). This value of λ implies that the brown dwarf's orbit is prograde and well-aligned with the equator of the host star, continuing the trend of transiting brown dwarfs showing a preference for spin–orbit alignment ( λ ≈ 0°) regardless of the stellar effective temperature. This contrast with the transiting giant planet population, whose spin–orbit alignments depend on host T eff , shows an increasingly clear distinction in the formation and orbital migration mechanisms between transiting giant planets and transiting brown dwarfs like CWW 89Ab. For this system in particular, we find it plausible that the brown dwarf may have undergone coplanar high-eccentricity migration influenced by CWW 89B.
",
"doi": "10.3847/1538-3881/ae19e8",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2026-01",
"series_number": "1",
"volume": "171",
"issue": "1",
"pages": "12"
},
{
"id": "authors:jberp-x6k59",
"collection": "authors",
"collection_id": "jberp-x6k59",
"cite_using_url": "https://authors.library.caltech.edu/records/jberp-x6k59",
"type": "article",
"title": "No Giant Planets in the Eta Cassiopeiae System: Dynamical Implications of a Wide Binary Companion",
"author": [
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Li",
"given_name": "Zhexing",
"orcid": "0000-0002-4860-7667"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "D'Angiolillo",
"given_name": "Skylar",
"orcid": "0000-0001-5592-6220"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
}
],
"abstract": "Given the vast number of stars that exist within binary systems, it remains important to explore the effect of binary star environments on the formation and evolution of exoplanetary systems. Nearby binaries provide opportunities to characterize their properties and orbits through a combination of radial velocities, astrometry, and direct imaging. Eta Cassiopeiae is a bright, well-known binary system for which recent observations have provided greatly improved stellar masses and orbital parameters. We present additional radial velocity data that are used to perform an injection-recovery analysis for potential planetary signatures. We further provide a detailed dynamical study that explores the viability of planetary orbits throughout the system. Our combined analysis shows that giant planets are significantly ruled out for the system, and indeed no planetary orbits are viable beyond ∼8 au of the primary star. However, terrestrial planets may yet exist within the habitable zone where orbits can remain long-term stable. We discuss the implications of these results, highlighting the effect of wide binary companions on giant planet formation, and the consequences for occurrence rates and planetary habitability.
",
"doi": "10.3847/1538-3881/ae089f",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2025-11",
"series_number": "5",
"volume": "170",
"issue": "5",
"pages": "270"
},
{
"id": "authors:1edvh-yd422",
"collection": "authors",
"collection_id": "1edvh-yd422",
"cite_using_url": "https://authors.library.caltech.edu/records/1edvh-yd422",
"type": "article",
"title": "The Polar Orbit of TOI-2374 b, a Planet in the Neptunian Ridge",
"author": [
{
"family_name": "Yee",
"given_name": "Samuel W.",
"orcid": "0000-0001-7961-3907"
},
{
"family_name": "Tamburo",
"given_name": "Patrick",
"orcid": "0000-0003-2171-5083"
},
{
"family_name": "Stef\u00e1nsson",
"given_name": "Gudmundur",
"orcid": "0000-0001-7409-5688"
},
{
"family_name": "Garc\u00eda-Mej\u00eda",
"given_name": "Juliana",
"orcid": "0000-0003-1361-985X"
},
{
"family_name": "Charbonneau",
"given_name": "David",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Barkaoui",
"given_name": "Khalid",
"orcid": "0000-0003-1464-9276"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Fukui",
"given_name": "Akihiko",
"orcid": "0000-0002-4909-5763"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683"
}
],
"abstract": "The \"Neptunian ridge\" is a recently identified peak in the frequency of planets with sizes between that of Neptune and Saturn orbiting their host stars with periods between 3 and 6 days. These planets may have formed similarly to their larger, hot Jupiter counterparts in the \"3 day pileup,\" through a dynamically excited migration pathway. The distribution of stellar obliquities in hot Neptune systems may therefore provide a vital clue as to their origin. We report a new stellar obliquity measurement for TOI-2374b, a planet in the Neptunian ridge (P = 4.31 days, Rp = 7.5 R ⊕). We observed a spectroscopic transit of TOI-2374b with the Keck Planet Finder, detecting the Rossiter–McLaughlin (RM) anomaly with an amplitude of 3 m s\u207b¹, and measured a sky-projected obliquity of λ = 81°_(−22°)^(+23°), indicating an orbit significantly misaligned with the spin axis of its host star. A reloaded RM analysis of the cross-correlation functions confirms this misalignment, measuring λ = 65°_(−24°)^(+32°). Additionally, we measured a stellar rotation period of P rot = 26.4_(−0.8)^(+0.9) days with photometry from the Tierras observatory, allowing us to deduce the three-dimensional stellar obliquity of ψ = 85.°9_(−9.°2)^(+8.°6). TOI-2374b joins a growing number of hot Neptunes on polar orbits. The high frequency of misaligned orbits for Neptunian ridge and desert planets, compared with their longer period counterparts, is reminiscent of patterns seen for the giant planets and may suggest a similar formation mechanism.
",
"doi": "10.3847/1538-3881/ae070b",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2025-11",
"series_number": "5",
"volume": "170",
"issue": "5",
"pages": "275"
},
{
"id": "authors:bgebs-fha95",
"collection": "authors",
"collection_id": "bgebs-fha95",
"cite_using_url": "https://authors.library.caltech.edu/records/bgebs-fha95",
"type": "article",
"title": "The highest mass Kepler red giants \u2013 II. Spectroscopic parameters, the amplitude\u2013activity relation, and unexpected halo orbits",
"author": [
{
"family_name": "Crawford",
"given_name": "Courtney L",
"orcid": "0000-0002-7654-7438"
},
{
"family_name": "Li",
"given_name": "Yaguang",
"orcid": "0000-0003-3020-4437"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Yu",
"given_name": "Jie",
"orcid": "0000-0002-0007-6211"
},
{
"family_name": "Bedding",
"given_name": "Timothy R",
"orcid": "0000-0001-5222-4661"
},
{
"family_name": "Martell",
"given_name": "Sarah L",
"orcid": "0000-0002-3430-4163"
},
{
"family_name": "Montet",
"given_name": "Benjamin T",
"orcid": "0000-0001-7516-8308"
},
{
"family_name": "Stello",
"given_name": "Dennis",
"orcid": "0000-0002-4879-3519"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Howard",
"given_name": "Andrew W",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Zhang",
"given_name": "Jingwen",
"orcid": "0000-0002-2696-2406"
},
{
"family_name": "Polanski",
"given_name": "Alex S",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Weiss",
"given_name": "Lauren M",
"orcid": "0000-0002-3725-3058"
}
],
"abstract": "The high-mass (M > 2 M\u2299) Kepler red giant stars are less well-studied than their lower mass counterparts. In the previous article, we presented a sample of 48 high-mass Kepler red giants and measured their asteroseismic parameters. This article presents spectroscopic measurements from the same sample, using high-resolution Keck/HIRES spectra to determine \u2060T_(eff), [Fe/H], log g\u2060, and v sin i\u2060. We refined our previous estimates of the stellar masses and radii based on the new T_(eff)\u2060. We also examined spectral features that could indicate binary activity, such as the Li line and [C/N] ratios. We found no Li-rich stars or clear [C/N] anomalies, but we observed a correlation between [C/N] and [Fe/H]. We measured chromospheric activity using the S-index of the Ca ii H & K lines and found no correlation with internal magnetic fields. However, we confirmed an anticorrelation between surface chromospheric activity and radial mode oscillation amplitudes, which indicates that strong surface magnetic fields weaken stellar oscillations. Finally, we used the Gaia DR3 astrometric data to show that our sample of stars have orbits consistent with all three Galactic kinematic regions. Although these stars are quite young, their orbits carry them into the thick disc and even the halo, raising questions about the accuracy and viability of kinematics in unravelling Galactic history. In future work, we plan to use the spectroscopic parameters measured here to provide better constraints for boutique frequency modelling, which will allow us to test the asteroseismic scaling relations at the high-mass regime.
",
"doi": "10.1093/mnras/staf1421",
"issn": "0035-8711",
"publisher": "Royal Astronomical Society",
"publication": "Monthly Notices of the Royal Astronomical Society",
"publication_date": "2025-10",
"series_number": "4",
"volume": "542",
"issue": "4",
"pages": "3289-3301"
},
{
"id": "authors:21q11-bgq53",
"collection": "authors",
"collection_id": "21q11-bgq53",
"cite_using_url": "https://authors.library.caltech.edu/records/21q11-bgq53",
"type": "article",
"title": "TOI-880 is an Aligned, Coplanar, Multiplanet System",
"author": [
{
"family_name": "Zhang",
"given_name": "Elina Y.",
"orcid": "0009-0004-0455-2424"
},
{
"family_name": "Teng",
"given_name": "Huan-Yu",
"orcid": "0000-0003-3860-6297"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Halverson",
"given_name": "Samuel P.",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel-P"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143"
},
{
"family_name": "Wang",
"given_name": "Xian-Yu",
"orcid": "0000-0002-0376-6365"
},
{
"family_name": "Wang",
"given_name": "Songhu",
"orcid": "0000-0002-7846-6981"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Nielsen",
"given_name": "Louise D.",
"orcid": "0000-0002-5254-2499"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven"
},
{
"family_name": "Handley",
"given_name": "Luke B.",
"orcid": "0000-0002-9305-5101",
"clpid": "Handley-Luke-B"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Turtelboom",
"given_name": "Emma V.",
"orcid": "0000-0002-1845-2617"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Gibson",
"given_name": "Steve R.",
"orcid": "0009-0004-4454-6053",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Rider",
"given_name": "Kodi"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Baker",
"given_name": "Ashley",
"orcid": "0000-0002-6525-7013",
"clpid": "Baker-Ashley"
},
{
"family_name": "Edelstein",
"given_name": "Jerry",
"orcid": "0009-0002-2419-8819"
},
{
"family_name": "Smith",
"given_name": "Christopher L."
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "Although many cases of stellar spin–orbit misalignment are known, it is usually unclear whether a single planet’s orbit was tilted or if the entire protoplanetary disk was misaligned. Measuring stellar obliquities in multitransiting planetary systems helps to distinguish these possibilities. Here, we present a measurement of the sky-projected spin–orbit angle for TOI-880 c (TOI-880.01), a member of a system of three transiting planets, using the Keck Planet Finder. We found that the host star is a K-type star (Teff = 5050 ± 100 K). Planet b (TOI-880.02) has a radius of 2.19 ± 0.11R⊕ and an orbital period of 2.6 days; planet c (TOI-880.01) is a Neptune-sized planet with 4.95 ± 0.20R⊕ on a 6.4 days orbit; and planet d (TOI-880.03) has a radius of 3.40^(+0.22)_(-0.21)R⊕ and a period of 14.3 days. By modeling the Rossiter–McLaughlin effect, we found the sky-projected obliquity to be \u2223λ_c\u2223 = 7.4^(+6.8)_(-7.2)°, consistent with a prograde, well-aligned orbit. The lack of detectable rotational modulation of the flux of the host star and a low v sin i \u22c6 (1.6 km s−1) imply slow rotation and correspondingly slow nodal precession of the planetary orbits and the expectation that the system will remain in this coplanar configuration. TOI-880 joins a growing sample of well-aligned, coplanar, multitransiting systems. Additionally, TOI-880 c is a promising target for James Webb Space Telescope follow-up, with a transmission spectroscopy metric of ∼170. We could not detect clear signs of atmospheric erosion in the Hα line from TOI-880 c, as photoevaporation might have diminished for this mature planet.
",
"doi": "10.3847/1538-3881/adf339",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2025-09",
"series_number": "3",
"volume": "170",
"issue": "3",
"pages": "175"
},
{
"id": "authors:p7c9s-56e60",
"collection": "authors",
"collection_id": "p7c9s-56e60",
"cite_using_url": "https://authors.library.caltech.edu/records/p7c9s-56e60",
"type": "article",
"title": "The Compositions of Rocky Planets in Close-in Orbits Tend to Be Earth-like",
"author": [
{
"family_name": "Brinkman",
"given_name": "Casey L.",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Lee",
"given_name": "Rena A.",
"orcid": "0000-0001-7058-4134"
},
{
"family_name": "Kolecki",
"given_name": "Jared",
"orcid": "0000-0002-6267-0849"
},
{
"family_name": "Tenn",
"given_name": "Gwyneth",
"orcid": "0009-0007-4721-9068"
},
{
"family_name": "Zhang",
"given_name": "Jingwen",
"orcid": "0000-0002-2696-2406"
},
{
"family_name": "Narayanan",
"given_name": "Suchitra",
"orcid": "0000-0002-0244-6650"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683"
},
{
"family_name": "Bean",
"given_name": "Jacob L.",
"orcid": "0000-0003-4733-6532"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Brady",
"given_name": "Madison",
"orcid": "0000-0003-2404-2427"
},
{
"family_name": "Brodheim",
"given_name": "Max",
"orcid": "0009-0008-9808-0411"
},
{
"family_name": "Brown",
"given_name": "Matt"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Deich",
"given_name": "William",
"orcid": "0009-0000-3624-1330"
},
{
"family_name": "Edelstein",
"given_name": "Jerry",
"orcid": "0009-0002-2419-8819"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven"
},
{
"family_name": "Gibson",
"given_name": "Steven R.",
"orcid": "0009-0004-4454-6053",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Gilbert",
"given_name": "Gregory J.",
"orcid": "0000-0003-0742-1660",
"clpid": "Gilbert-Gregory"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391"
},
{
"family_name": "Handley",
"given_name": "Luke",
"orcid": "0000-0002-9305-5101",
"clpid": "Handley-Luke"
},
{
"family_name": "Hill",
"given_name": "Grant M.",
"orcid": "0000-0002-7648-9119"
},
{
"family_name": "Holcomb",
"given_name": "Rae",
"orcid": "0000-0002-5034-9476"
},
{
"family_name": "Holden",
"given_name": "Bradford",
"orcid": "0000-0002-6153-3076"
},
{
"family_name": "Householder",
"given_name": "Aaron",
"orcid": "0000-0002-5812-3236"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kaye",
"given_name": "Stephen",
"clpid": "Kaye-Stephen"
},
{
"family_name": "Laher",
"given_name": "Russ R.",
"orcid": "0000-0003-2451-5482",
"clpid": "Laher-R-R"
},
{
"family_name": "Lanclos",
"given_name": "Kyle",
"orcid": "0009-0004-0592-1850"
},
{
"family_name": "Ong",
"given_name": "J. M. Joel",
"orcid": "0000-0001-7664-648X"
},
{
"family_name": "Payne",
"given_name": "Joel",
"orcid": "0009-0008-4293-0341"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Pidhorodetska",
"given_name": "Daria",
"orcid": "0000-0001-9771-7953"
},
{
"family_name": "Poppett",
"given_name": "Claire",
"orcid": "0000-0003-0512-5489"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan"
},
{
"family_name": "Saunders",
"given_name": "Nicholas",
"orcid": "0000-0003-2657-3889"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-4046-987X"
},
{
"family_name": "Seifahrt",
"given_name": "Andreas",
"orcid": "0000-0003-4526-3747"
},
{
"family_name": "Shaum",
"given_name": "Abby P.",
"orcid": "0000-0003-3133-6837",
"clpid": "Shaum-Abby-P"
},
{
"family_name": "Sirk",
"given_name": "Martin M.",
"orcid": "0009-0007-8555-8060"
},
{
"family_name": "Smith",
"given_name": "Chris"
},
{
"family_name": "Smith",
"given_name": "Roger",
"orcid": "0000-0001-7062-9726",
"clpid": "Smith-R-M"
},
{
"family_name": "Stef\u00e1nsson",
"given_name": "Gu\u0111mundur",
"orcid": "0000-0001-7409-5688"
},
{
"family_name": "St\u00fcrmer",
"given_name": "Julian",
"orcid": "0000-0002-4410-4712"
},
{
"family_name": "Thorne",
"given_name": "Jim"
},
{
"family_name": "Turtelboom",
"given_name": "Emma V.",
"orcid": "0000-0002-1845-2617"
},
{
"family_name": "Tyler",
"given_name": "Dakotah",
"orcid": "0000-0003-0298-4667"
},
{
"family_name": "Valliant",
"given_name": "John"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
},
{
"family_name": "Yee",
"given_name": "Samuel W.",
"orcid": "0000-0001-7961-3907"
},
{
"family_name": "Yeh",
"given_name": "Sherry",
"orcid": "0000-0002-4037-3114"
},
{
"family_name": "Zink",
"given_name": "Jon",
"orcid": "0000-0003-1848-2063",
"clpid": "Zink-Jon"
}
],
"abstract": "Hundreds of exoplanets between 1 and 1.8 times the size of Earth have been discovered on close-in orbits. However, these planets show such a diversity in densities that some appear to be made entirely of iron, while others appear to host gaseous envelopes. To test this diversity in composition, we update the masses of five rocky exoplanets (HD 93963 A b, Kepler-10 b, Kepler-100 b, Kepler-407 b, and TOI-1444 b) and present the confirmation of a new planet (TOI-1011) using 187 high-precision radial velocities from Gemini/MAROON-X and Keck/KPF. Our updated planet masses suggest compositions closer to that of Earth than previous literature values for all planets in our sample. In particular, we report that two previously identified \"super-Mercuries\" (Kepler-100 b and HD 93963 A b) have lower masses that suggest less iron-rich compositions. We then compare the ratio of iron to rock-building species with the abundance ratios of those elements in their host stars. These updated planet compositions do not suggest a steep relationship between planet and host star compositions, contradictory to previous results, and suggest that planets and host stars have similar abundance ratios.
",
"doi": "10.3847/1538-3881/ade677",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2025-08",
"series_number": "2",
"volume": "170",
"issue": "2",
"pages": "109"
},
{
"id": "authors:s9j85-wc010",
"collection": "authors",
"collection_id": "s9j85-wc010",
"cite_using_url": "https://authors.library.caltech.edu/records/s9j85-wc010",
"type": "article",
"title": "A Hot Jupiter with a Retrograde Orbit Around A Sun-like Star and a Toy Model of Hot Jupiters in Wide Binary Star Systems",
"author": [
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683"
},
{
"family_name": "Handley",
"given_name": "Luke B.",
"orcid": "0000-0002-9305-5101",
"clpid": "Handley-Luke-B"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel"
},
{
"family_name": "Brodheim",
"given_name": "Max",
"orcid": "0009-0008-9808-0411"
},
{
"family_name": "Brown",
"given_name": "Matt"
},
{
"family_name": "Carmichael",
"given_name": "Theron W.",
"orcid": "0000-0001-6416-1274"
},
{
"family_name": "Deich",
"given_name": "William",
"orcid": "0009-0000-3624-1330"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Gibson",
"given_name": "Steven R.",
"orcid": "0009-0004-4454-6053",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Hill",
"given_name": "Grant M.",
"orcid": "0000-0002-7648-9119"
},
{
"family_name": "Holden",
"given_name": "Bradford",
"orcid": "0000-0002-6153-3076"
},
{
"family_name": "Householder",
"given_name": "Aaron",
"orcid": "0000-0002-5812-3236"
},
{
"family_name": "Laher",
"given_name": "Russ R.",
"orcid": "0000-0003-2451-5482",
"clpid": "Laher-R-R"
},
{
"family_name": "Lanclos",
"given_name": "Kyle",
"orcid": "0009-0004-0592-1850"
},
{
"family_name": "Payne",
"given_name": "Joel",
"orcid": "0009-0008-4293-0341"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-4046-987X"
},
{
"family_name": "Sirk",
"given_name": "Martin M.",
"orcid": "0009-0007-8555-8060"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
}
],
"abstract": "We report an observation of a transit of the hot Jupiter (HJ) KELT-23A b with the Keck Planet Finder spectrograph and a measurement of the sky-projected obliquity (λ) of its Sun-like (T eff ≈ 5900 K) host star. We measured a projected stellar obliquity of λ ≈ 180°, indicating that the orbit of the HJ is retrograde relative to the direction of the stellar spin. Due to the slow sky-projected rotational velocity of the host star ( v sin i \u22c6 ≈ 0.5 km s\u207b¹), the true orbit of the HJ could be closer to polar. HJs around stars with effective temperatures below the Kraft break—such as KELT-23A—are generally found to have prograde orbits that are well-aligned with the equatorial planes of their host stars (i.e., λ ∼ 0°), most likely due to spin–orbit realignment driven by stellar tidal dissipation. This system is therefore a unique outlier that strains migration and tidal theories. The fact that the HJ has a highly misaligned orbit may suggest that the planet arrived at its close-in orbit relatively recently, possibly via interactions with the wide-separation (570 au) M-dwarf companion in the system, or that it has stalled near an antialigned or polar orientation while realigning. Using Gaia DR3, we determined the orbit of the stellar companion to be moderately face-on (γ = 60° ± 4°). We show that the distribution of observed systems in the γ–λ plane can be broadly reproduced using a toy model in which the orbits of the planetary and stellar companions begin aligned with the equatorial plane of the primary star and, upon migrating inwards, the planet preferentially obtains either an aligned or polar orbit.
",
"doi": "10.1088/1538-3873/adecc2",
"issn": "0004-6280",
"publisher": "IOP Publishing",
"publication": "Publications of the Astronomical Society of the Pacific",
"publication_date": "2025-07",
"series_number": "7",
"volume": "137",
"issue": "7",
"pages": "074401"
},
{
"id": "authors:kz0vr-dpp02",
"collection": "authors",
"collection_id": "kz0vr-dpp02",
"cite_using_url": "https://authors.library.caltech.edu/records/kz0vr-dpp02",
"type": "article",
"title": "Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. VI. Confirmation of a Long-period Giant Planet Discovered with a Single TESS Transit",
"author": [
{
"family_name": "Essack",
"given_name": "Zahra",
"orcid": "0000-0002-2482-0180"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Battley",
"given_name": "Matthew P.",
"orcid": "0000-0002-1357-9774"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Jones",
"given_name": "Matias I."
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Mamajek",
"given_name": "Eric E.",
"orcid": "0000-0003-2008-1488",
"clpid": "Mamajek-Eric-E"
},
{
"family_name": "Mann",
"given_name": "Christopher R.",
"orcid": "0000-0002-9312-0073"
},
{
"family_name": "Mireles",
"given_name": "Ismael",
"orcid": "0000-0002-4510-2268"
},
{
"family_name": "Oddo",
"given_name": "Dominic",
"orcid": "0000-0002-2702-7700"
},
{
"family_name": "Sgro",
"given_name": "Lauren A.",
"orcid": "0000-0001-6629-5399"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Ulmer-Moll",
"given_name": "Solene",
"orcid": "0000-0003-2417-7006"
},
{
"family_name": "Watkins",
"given_name": "Cristilyn N.",
"orcid": "0000-0001-8621-6731"
},
{
"family_name": "Yee",
"given_name": "Samuel W.",
"orcid": "0000-0001-7961-3907"
},
{
"family_name": "Ziegler",
"given_name": "Carl",
"orcid": "0000-0002-0619-7639"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Apergis",
"given_name": "Ioannis",
"orcid": "0009-0004-7473-4573"
},
{
"family_name": "Barkaoui",
"given_name": "Khalid",
"orcid": "0000-0003-1464-9276"
},
{
"family_name": "Brahm",
"given_name": "Rafael",
"orcid": "0000-0002-9158-7315"
},
{
"family_name": "Bryant",
"given_name": "Edward M.",
"orcid": "0000-0001-7904-4441"
},
{
"family_name": "Esposito",
"given_name": "Thomas M.",
"orcid": "0000-0002-0792-3719"
},
{
"family_name": "Figueira",
"given_name": "Pedro",
"orcid": "0000-0001-8504-283X"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Gill",
"given_name": "Samuel",
"orcid": "0000-0002-4259-0155"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kendall",
"given_name": "Alicia",
"orcid": "0009-0006-0719-9229"
},
{
"family_name": "Law",
"given_name": "Nicholas",
"orcid": "0000-0001-9380-6457"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "Mann",
"given_name": "Andrew W.",
"orcid": "0000-0003-3654-1602"
},
{
"family_name": "Matson",
"given_name": "Rachel A.",
"orcid": "0000-0001-7233-7508"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Revol",
"given_name": "Alexandre",
"orcid": "0000-0002-3844-1747"
},
{
"family_name": "Saha",
"given_name": "Suman",
"orcid": "0000-0001-8018-0264"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Sefako",
"given_name": "Ramotholo",
"orcid": "0000-0003-3904-6754"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Strakhov",
"given_name": "Ivan A.",
"orcid": "0000-0003-0647-6133"
},
{
"family_name": "Villanueva",
"given_name": "Steven",
"orcid": "0000-0001-6213-8804"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Bosch-Cabot",
"given_name": "Pau",
"orcid": "0000-0002-1514-5558"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "For\u00e9s-Toribio",
"given_name": "Raquel",
"orcid": "0000-0002-6482-2180"
},
{
"family_name": "Rodriguez Frustagia",
"given_name": "Fabian"
},
{
"family_name": "Girardin",
"given_name": "Eric",
"orcid": "0000-0002-5443-3640"
},
{
"family_name": "Helm",
"given_name": "Ian J.",
"orcid": "0000-0002-0473-4437"
},
{
"family_name": "Lewin",
"given_name": "Pablo",
"orcid": "0000-0003-0828-6368"
},
{
"family_name": "Mu\u00f1oz",
"given_name": "Jose A.",
"orcid": "0000-0001-9833-2959"
},
{
"family_name": "Newman",
"given_name": "Patrick",
"orcid": "0000-0003-3848-3418"
},
{
"family_name": "Plavchan",
"given_name": "Peter",
"orcid": "0000-0002-8864-1667"
},
{
"family_name": "Srdoc",
"given_name": "Gregor"
},
{
"family_name": "Stockdale",
"given_name": "Chris",
"orcid": "0000-0003-2163-1437"
},
{
"family_name": "W\u00fcnsche",
"given_name": "Ana\u00ebl",
"orcid": "0000-0002-6176-9847"
},
{
"family_name": "Billiani",
"given_name": "Mario",
"orcid": "0000-0002-3278-9590"
},
{
"family_name": "Davy",
"given_name": "Martin"
},
{
"family_name": "Douvas",
"given_name": "Alex",
"orcid": "0009-0009-8377-0695"
},
{
"family_name": "Fukui",
"given_name": "Keiichi",
"orcid": "0000-0002-9297-5133"
},
{
"family_name": "Guillet",
"given_name": "Bruno",
"orcid": "0000-0003-4091-0247"
},
{
"family_name": "Ostrem",
"given_name": "Cory"
},
{
"family_name": "Rushton",
"given_name": "Michael"
},
{
"family_name": "Schmidt",
"given_name": "Angsar"
},
{
"family_name": "Finardi",
"given_name": "Andrea"
},
{
"family_name": "Girard",
"given_name": "Patrice",
"orcid": "0009-0004-8835-6059"
},
{
"family_name": "Goto",
"given_name": "Tateki",
"orcid": "0000-0002-9540-6112"
},
{
"family_name": "de Lambilly",
"given_name": "Julien S.",
"orcid": "0000-0003-3464-1554"
},
{
"family_name": "Leroux",
"given_name": "Liouba",
"orcid": "0000-0003-3046-9187"
},
{
"family_name": "Mortecrette",
"given_name": "Fabrice",
"orcid": "0000-0002-6818-6599"
},
{
"family_name": "Pickering",
"given_name": "John W.",
"orcid": "0000-0001-9475-0344"
},
{
"family_name": "Primm",
"given_name": "Michael",
"orcid": "0000-0003-3462-7533"
},
{
"family_name": "Ribot",
"given_name": "Marc"
},
{
"family_name": "Teng",
"given_name": "Ethan"
},
{
"family_name": "Verveen",
"given_name": "Aad"
},
{
"family_name": "Will",
"given_name": "Stefan",
"orcid": "0000-0003-0404-6279"
},
{
"family_name": "Ziegler",
"given_name": "Mark"
}
],
"abstract": "We report the discovery and confirmation of TOI-4465 b, a 1.25RJ^+(0.08 RJ)_(-0.07) RJ, 5.89MJ ± 0.26MJ giant planet orbiting a G dwarf star at d \u2243 122 pc. The planet was detected as a single-transit event in data from Sector 40 of the Transiting Exoplanet Survey Satellite (TESS) mission. Radial velocity (RV) observations of TOI-4465 showed a planetary signal with an orbital period of ∼102 days and an orbital eccentricity of e = 0.24 ± 0.01. TESS reobserved TOI-4465 in Sector 53 and Sector 80 but did not detect another transit of TOI-4465 b, as the planet was not expected to transit during these observations based on the RV period. A global ground-based photometry campaign was initiated to observe another transit of TOI-4465 b after the RV period determination. The ∼12 hr long transit event was captured from multiple sites around the world and included observations from 24 citizen scientists, confirming the orbital period as ∼102 days. TOI-4465 b is a relatively dense (3.73 ± 0.53 g cm−3), temperate (375–478 K) giant planet. Based on giant planet structure models, TOI-4465 b appears to be enriched in heavy elements at a level consistent with late-stage accretion of icy planetesimals. Additionally, we explore TOI-4465 b’s potential for atmospheric characterization and obliquity measurement. Increasing the number of long-period planets by confirming single-transit events is crucial for understanding the frequency and demographics of planet populations in the outer regions of planetary systems.
",
"doi": "10.3847/1538-3881/add88b",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2025-07",
"series_number": "1",
"volume": "170",
"issue": "1",
"pages": "41"
},
{
"id": "authors:eb2t9-08w07",
"collection": "authors",
"collection_id": "eb2t9-08w07",
"cite_using_url": "https://authors.library.caltech.edu/records/eb2t9-08w07",
"type": "article",
"title": "The True Stellar Obliquity of a Sub-Saturn Planet from the Tierras Observatory and the Keck Planet Finder",
"author": [
{
"family_name": "Tamburo",
"given_name": "Patrick",
"orcid": "0000-0003-2171-5083"
},
{
"family_name": "Yee",
"given_name": "Samuel W.",
"orcid": "0000-0001-7961-3907"
},
{
"family_name": "Garc\u00eda-Mej\u00eda",
"given_name": "Juliana",
"orcid": "0000-0003-1361-985X"
},
{
"family_name": "Stef\u00e1nsson",
"given_name": "Gudmundur",
"orcid": "0000-0001-7409-5688"
},
{
"family_name": "Charbonneau",
"given_name": "David",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Householder",
"given_name": "Aaron",
"orcid": "0000-0002-5812-3236"
}
],
"abstract": "We measure the true obliquity of TOI-2364, a K dwarf with a sub-Saturn-mass (Mp = 0.18 MJ) transiting planet on the upper edge of the hot-Neptune desert. We used new Rossiter–McLaughlin observations gathered with the Keck Planet Finder to measure the sky-projected obliquity λ = 7° + 10°–11°. Combined with a stellar rotation period of 23.47 ± 0.29 days measured with photometry from the Tierras Observatory, this yields a stellar inclination of 90° ± 13° and a true obliquity ψ = 15.°6 + 7.°7–7.°3, indicating that the planet's orbit is well aligned with the rotation axis of its host star. The determination of ψ is important for investigating a potential bimodality in the orbits of short-period sub-Saturns around cool stars, which tend to be either aligned with or perpendicular to their host stars' spin axes.
",
"doi": "10.3847/1538-3881/add530",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2025-07",
"series_number": "1",
"volume": "170",
"issue": "1",
"pages": "34"
},
{
"id": "authors:49geq-qtf75",
"collection": "authors",
"collection_id": "49geq-qtf75",
"cite_using_url": "https://authors.library.caltech.edu/records/49geq-qtf75",
"type": "article",
"title": "K Dwarf Radius Inflation and a 10 Gyr Spin-down Clock Unveiled through Asteroseismology of HD 219134 from the Keck Planet Finder",
"author": [
{
"family_name": "Li \u674e",
"given_name": "Yaguang \u4e9a\u5149",
"orcid": "0000-0003-3020-4437"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Ong \u738b",
"given_name": "J. M. Joel \u52a0\u5195",
"orcid": "0000-0001-7664-648X"
},
{
"family_name": "van Saders",
"given_name": "Jennifer",
"orcid": "0000-0002-4284-8638"
},
{
"family_name": "Costa",
"given_name": "R. R.",
"orcid": "0009-0008-6039-6381"
},
{
"family_name": "Larsen",
"given_name": "Jens Reersted",
"orcid": "0009-0006-0423-2353"
},
{
"family_name": "Basu",
"given_name": "Sarbani",
"orcid": "0000-0002-6163-3472"
},
{
"family_name": "Bedding",
"given_name": "Timothy R.",
"orcid": "0000-0001-5222-4661"
},
{
"family_name": "Dai \u6234",
"given_name": "Fei \u98de",
"orcid": "0000-0002-8958-0683"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Carmichael",
"given_name": "Theron W.",
"orcid": "0000-0001-6416-1274"
},
{
"family_name": "Hey",
"given_name": "Daniel",
"orcid": "0000-0003-3244-5357"
},
{
"family_name": "Kjeldsen",
"given_name": "Hans",
"orcid": "0000-0002-9037-0018"
},
{
"family_name": "Hon",
"given_name": "Marc",
"orcid": "0000-0003-2400-6960"
},
{
"family_name": "Campante",
"given_name": "Tiago L.",
"orcid": "0000-0002-4588-5389"
},
{
"family_name": "Monteiro",
"given_name": "M\u00e1rio J. P. F. G.",
"orcid": "0000-0003-0513-8116"
},
{
"family_name": "Lundkvist",
"given_name": "Mia Sloth",
"orcid": "0000-0002-8661-2571"
},
{
"family_name": "Saunders",
"given_name": "Nicholas",
"orcid": "0000-0003-2657-3889"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Gibson",
"given_name": "Steven R.",
"orcid": "0009-0004-4454-6053",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel"
},
{
"family_name": "Rider",
"given_name": "Kodi"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Baker",
"given_name": "Ashley D.",
"orcid": "0000-0002-6525-7013",
"clpid": "Baker-Ashley-D"
},
{
"family_name": "Edelstein",
"given_name": "Jerry",
"orcid": "0009-0002-2419-8819"
},
{
"family_name": "Smith",
"given_name": "Chris"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
}
],
"abstract": "We present the first asteroseismic analysis of the K3 V planet host HD 219134 based on four consecutive nights of radial velocities collected with the Keck Planet Finder. We apply Gold deconvolution to the power spectrum to disentangle modes from side lobes in the spectral window and extract 25 mode frequencies with spherical degrees 0 ≤ \u2113 ≤ 3. We derive the fundamental properties using five different evolutionary-modeling pipelines and report a mass of 0.763 ± 0.020 (stat) ± 0.007 (sys) M\u2299, a radius of 0.748 ± 0.007 (stat) ± 0.002 (sys) R\u2299, and an age of 10.151 ± 1.520 (stat) ± 0.810 (sys) Gyr. Compared to the interferometric radius 0.783 ± 0.005 R\u2299, the asteroseismic radius is 4% smaller at the 4σ level—a discrepancy not easily explained by known interferometric systematics, modeling assumptions on atmospheric boundary conditions and mixing lengths, magnetic fields, or tidal heating. HD 219134 is the first main-sequence star cooler than 5000 K with an asteroseismic age estimate and will serve as a critical calibration point for stellar spin-down relations. We show that existing calibrated prescriptions for angular momentum loss, incorporating weakened magnetic braking with asteroseismically constrained stellar parameters, accurately reproduce the observed rotation period. Additionally, we revised the masses and radii of the super-Earths in the system, which support their having Earth-like compositions. Finally, we confirm that the oscillation amplitude in radial velocity scales as (L/M)1.5 in K dwarfs, in contrast to the (L/M)0.7 relation observed in G dwarfs. These findings provide significant insights into the structure and angular momentum loss of K-type stars.
",
"doi": "10.3847/1538-4357/adc737",
"issn": "0004-637X",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal",
"publication_date": "2025-05-10",
"series_number": "2",
"volume": "984",
"issue": "2",
"pages": "125"
},
{
"id": "authors:jjtfz-jj870",
"collection": "authors",
"collection_id": "jjtfz-jj870",
"cite_using_url": "https://authors.library.caltech.edu/records/jjtfz-jj870",
"type": "article",
"title": "TOI-6324 b: An Earth-mass Ultra-short-period Planet Transiting a Nearby M Dwarf",
"author": [
{
"family_name": "Lee",
"given_name": "Rena A.",
"orcid": "0000-0001-7058-4134"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel"
},
{
"family_name": "Gomez Barrientos",
"given_name": "Jonathan",
"orcid": "0000-0002-0672-9658",
"clpid": "Gomez-Barrientos-Jonathan"
},
{
"family_name": "Greklek-McKeon",
"given_name": "Michael",
"orcid": "0000-0002-0371-1647",
"clpid": "Greklek-McKeon-Michael"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Stef\u00e1nsson",
"given_name": "Gu\u0111mundur",
"orcid": "0000-0001-7409-5688"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Brinkman",
"given_name": "Casey L.",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Saunders",
"given_name": "Nicholas",
"orcid": "0000-0003-2657-3889"
},
{
"family_name": "Hey",
"given_name": "Daniel",
"orcid": "0000-0003-3244-5357"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Rogers",
"given_name": "Leslie A.",
"orcid": "0000-0003-0638-3455"
},
{
"family_name": "Valencia",
"given_name": "Diana",
"orcid": "0000-0003-3993-4030"
},
{
"family_name": "Plotnykov",
"given_name": "Mykhaylo",
"orcid": "0000-0002-9479-2744"
},
{
"family_name": "Paragas",
"given_name": "Kimberly",
"orcid": "0000-0003-0062-1168",
"clpid": "Paragas-Kimberly"
},
{
"family_name": "Hu",
"given_name": "Renyu",
"orcid": "0000-0003-2215-8485",
"clpid": "Hu-Renyu"
},
{
"family_name": "Han",
"given_name": "Te",
"orcid": "0000-0002-7127-7643"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan",
"orcid": "0000-0003-3856-3143"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Householder",
"given_name": "Aaron",
"orcid": "0000-0002-5812-3236"
},
{
"family_name": "Gilbert",
"given_name": "Gregory J.",
"orcid": "0000-0003-0742-1660"
},
{
"family_name": "Ong",
"given_name": "J. M. Joel",
"orcid": "0000-0001-7664-648X"
},
{
"family_name": "Zhang",
"given_name": "Jingwen",
"orcid": "0000-0002-2696-2406"
},
{
"family_name": "Luhn",
"given_name": "Jacob",
"clpid": "Luhn-Jacob"
},
{
"family_name": "Handley",
"given_name": "Luke",
"orcid": "0000-0002-9305-5101",
"clpid": "Handley-Luke"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven"
},
{
"family_name": "Holcomb",
"given_name": "Rae",
"orcid": "0000-0002-5034-9476"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Baker",
"given_name": "Ashley D.",
"orcid": "0000-0002-6525-7013",
"clpid": "Baker-Ashley-D"
},
{
"family_name": "Brodheim",
"given_name": "Max",
"orcid": "0009-0008-9808-0411"
},
{
"family_name": "Brown",
"given_name": "Matt"
},
{
"family_name": "Charbonneau",
"given_name": "David",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Deich",
"given_name": "William",
"orcid": "0009-0000-3624-1330"
},
{
"family_name": "Dumusque",
"given_name": "Xavier",
"orcid": "0000-0002-9332-2011"
},
{
"family_name": "Gibson",
"given_name": "Steven R.",
"orcid": "0009-0004-4454-6053",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Gilbert",
"given_name": "Emily",
"orcid": "0000-0002-0388-8004",
"clpid": "Gilbert-Emily"
},
{
"family_name": "Hill",
"given_name": "Grant M.",
"orcid": "0000-0002-7648-9119"
},
{
"family_name": "Holden",
"given_name": "Bradford",
"orcid": "0000-0002-6153-3076"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Kaye",
"given_name": "Stephen",
"clpid": "Kaye-Stephen"
},
{
"family_name": "Laher",
"given_name": "Russ R.",
"orcid": "0000-0003-2451-5482",
"clpid": "Laher-R-R"
},
{
"family_name": "Lanclos",
"given_name": "Kyle",
"orcid": "0009-0004-0592-1850"
},
{
"family_name": "Levine",
"given_name": "W. Garett",
"orcid": "0000-0002-1422-4430"
},
{
"family_name": "Payne",
"given_name": "Joel",
"orcid": "0009-0008-4293-0341"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "O'Meara",
"given_name": "John",
"orcid": "0000-0002-7893-1054"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Rider",
"given_name": "Kodi"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-4046-987X"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Shaum",
"given_name": "Abby P.",
"orcid": "0000-0003-3133-6837",
"clpid": "Shaum-Abby-P"
},
{
"family_name": "Sirk",
"given_name": "Martin M.",
"orcid": "0009-0007-8555-8060"
},
{
"family_name": "Striegel",
"given_name": "Stephanie",
"orcid": "0009-0008-5145-0446"
},
{
"family_name": "Teske",
"given_name": "Johanna",
"orcid": "0009-0008-2801-5040"
},
{
"family_name": "Valliant",
"given_name": "John"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Vasisht",
"given_name": "Gautam",
"orcid": "0000-0002-1871-6264",
"clpid": "Vasisht-Guatam"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
},
{
"family_name": "Wang",
"given_name": "Sharon Xuesong",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Wishnow",
"given_name": "Edward"
},
{
"family_name": "Yeh",
"given_name": "Sherry",
"orcid": "0000-0002-4037-3114"
}
],
"abstract": "We report the confirmation of TOI-6324 b, an Earth-sized (1.059 ± 0.041 R⊕) ultra-short-period (USP) planet orbiting a nearby (∼20 pc) M dwarf. Using the newly commissioned Keck Planet Finder spectrograph, we have measured the mass of TOI-6324 b 1.17 ± 0.22 M⊕. Because of its extremely short orbit of just ∼6.7 hr, TOI-6324 b is intensely irradiated by its M dwarf host and is expected to be stripped of any thick H/He envelope. We were able to constrain its interior composition and found an iron-core mass fraction (CMF = 27% ± 37%) consistent with that of Earth (∼33%) and other confirmed USPs. TOI-6324 b is the closest to an Earth-sized USP confirmed to date. TOI-6324 b is a promising target for JWST phase-curve and secondary eclipse observations (emission spectroscopy metric = 25), which may reveal its surface mineralogy, day–night temperature contrast, and possible tidal deformation. From seven sectors of TESS data, we report a tentative detection of the optical phase-curve variation with an amplitude of 42 ± 28 ppm.
",
"doi": "10.3847/2041-8213/adadd7",
"issn": "2041-8205",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Letters",
"publication_date": "2025-04-20",
"series_number": "2",
"volume": "983",
"issue": "2",
"pages": "L36"
},
{
"id": "authors:hdpjg-j9b14",
"collection": "authors",
"collection_id": "hdpjg-j9b14",
"cite_using_url": "https://authors.library.caltech.edu/records/hdpjg-j9b14",
"type": "article",
"title": "A Testbed for Tidal Migration: The 3D Architecture of an Eccentric Hot Jupiter HD 118203 b Accompanied by a Possibly Aligned Outer Giant Planet",
"author": [
{
"family_name": "Zhang \u5f20",
"given_name": "Jingwen \u5a67\u96ef",
"orcid": "0000-0002-2696-2406"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Xuan",
"given_name": "Jerry W.",
"orcid": "0000-0002-6618-1137",
"clpid": "Xuan-Jerry-W"
},
{
"family_name": "Burt",
"given_name": "Jennifer A.",
"orcid": "0000-0002-0040-6815",
"clpid": "Burt-Jennifer-A"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683"
},
{
"family_name": "Saunders",
"given_name": "Nicholas",
"orcid": "0000-0003-2657-3889"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Wang",
"given_name": "Sharon X.",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Brodheim",
"given_name": "Max",
"orcid": "0009-0008-9808-0411"
},
{
"family_name": "Claytor",
"given_name": "Zachary R.",
"orcid": "0000-0002-9879-3904"
},
{
"family_name": "Crossfield",
"given_name": "Ian"
},
{
"family_name": "Deich",
"given_name": "William",
"orcid": "0009-0000-3624-1330"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Gibson",
"given_name": "Steven R.",
"orcid": "0009-0004-4454-6053",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel"
},
{
"family_name": "Hill",
"given_name": "Grant M.",
"orcid": "0000-0002-7648-9119"
},
{
"family_name": "Holden",
"given_name": "Bradford",
"orcid": "0000-0002-6153-3076"
},
{
"family_name": "Householder",
"given_name": "Aaron",
"orcid": "0000-0002-5812-3236"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kaye",
"given_name": "Stephen",
"clpid": "Kaye-Stephen"
},
{
"family_name": "Lanclos",
"given_name": "Kyle",
"orcid": "0009-0004-0592-1850"
},
{
"family_name": "Laher",
"given_name": "Russ R.",
"orcid": "0000-0003-2451-5482",
"clpid": "Laher-Russ-R"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Payne",
"given_name": "Joel",
"orcid": "0009-0008-4293-0341"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-0091-7105"
},
{
"family_name": "Shaum",
"given_name": "Abby P.",
"orcid": "0000-0003-3133-6837",
"clpid": "Shaum-Abby-P"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
},
{
"family_name": "Wishnow",
"given_name": "Edward"
},
{
"family_name": "Yeh",
"given_name": "Sherry",
"orcid": "0000-0002-4037-3114"
}
],
"abstract": "Characterizing outer companions to hot Jupiters plays a crucial role in deciphering their origins. We present the discovery of a long-period giant planet, HD 118203 c (mc=11.79_(−0.63)^(+0.69) MJ, ac=6.28_(−0.11)^(+0.10) au) exterior to a close-in eccentric hot Jupiter HD 118203 b (Pb = 6.135 days, mb = 2.14 ± 0.12 MJ, rb = 1.14 ± 0.029 RJ, eb = 0.31 ± 0.007) based on 20 yr radial velocities (RVs). Using Rossiter–McLaughlin (RM) observations from the Keck Planet Finder, we measured a low sky-projected spin–orbit angle λb=−11\u22187_(−10.0)^(+7.6) for HD 118203 b and detected stellar oscillations in the host star, confirming its evolved status. Combining the RM observation with the stellar inclination measurement, we constrained the true spin–orbit angle of HD 118203 b as Ψb < 335 (2σ), indicating the orbit normal of the hot Jupiter nearly aligned with the stellar spin axis. Furthermore, by combining RVs and Hipparcos-Gaia astrometric acceleration, we constrained the line-of-sight mutual inclination between the hot Jupiter and the outer planet to be 9.\u22188_(−9.3)^(+16.2) at the 2σ level. HD 118203 is one of first hot Jupiter systems where both the true spin–orbit angle of the hot Jupiter and the mutual inclination between inner and outer planets have been determined. Our results are consistent with a system-wide alignment, with low mutual inclinations between the outer giant planet, the inner hot Jupiter, and the host star. This alignment, along with the moderate eccentricity of HD 118203 c, implies that the system may have undergone coplanar high-eccentricity tidal migration. Under this framework, our dynamical analysis suggests an initial semimajor axis of 0.3–3.2 au for the proto–hot Jupiter.
",
"doi": "10.3847/1538-3881/ad86c4",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2024-12",
"series_number": "6",
"volume": "168",
"issue": "6",
"pages": "295"
},
{
"id": "authors:j61zz-az116",
"collection": "authors",
"collection_id": "j61zz-az116",
"cite_using_url": "https://authors.library.caltech.edu/records/j61zz-az116",
"type": "article",
"title": "Asteroseismology of the Nearby K Dwarf \u03c3 Draconis Using the Keck Planet Finder and TESS",
"author": [
{
"family_name": "Hon",
"given_name": "Marc",
"orcid": "0000-0003-2400-6960"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Li",
"given_name": "Yaguang",
"orcid": "0000-0003-3020-4437"
},
{
"family_name": "Metcalfe",
"given_name": "Travis S.",
"orcid": "0000-0003-4034-0416"
},
{
"family_name": "Bedding",
"given_name": "Timothy R.",
"orcid": "0000-0001-5222-4661"
},
{
"family_name": "Ong",
"given_name": "Joel",
"orcid": "0000-0001-7664-648X"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel"
},
{
"family_name": "Garc\u00eda",
"given_name": "Rafael A.",
"orcid": "0000-0002-8854-3776"
},
{
"family_name": "Kjeldsen",
"given_name": "Hans",
"orcid": "0000-0002-9037-0018"
},
{
"family_name": "Stello",
"given_name": "Dennis",
"orcid": "0000-0002-4879-3519"
},
{
"family_name": "Hey",
"given_name": "Daniel R.",
"orcid": "0000-0003-3244-5357"
},
{
"family_name": "Campante",
"given_name": "Tiago",
"orcid": "0000-0002-4588-5389"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Gibson",
"given_name": "Steven R.",
"orcid": "0009-0004-4454-6053",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Rider",
"given_name": "Kodi"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Baker",
"given_name": "Ashley D.",
"orcid": "0000-0002-6525-7013",
"clpid": "Baker-Ashley-D"
},
{
"family_name": "Edelstein",
"given_name": "Jerry",
"orcid": "0009-0002-2419-8819"
},
{
"family_name": "Smith",
"given_name": "Chris"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
},
{
"family_name": "Brodheim",
"given_name": "Max",
"orcid": "0009-0008-9808-0411"
},
{
"family_name": "Brown",
"given_name": "Matt"
},
{
"family_name": "Chan",
"given_name": "Dwight"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683"
},
{
"family_name": "Deich",
"given_name": "William",
"orcid": "0009-0000-3624-1330"
},
{
"family_name": "Gottschalk",
"given_name": "Colby"
},
{
"family_name": "Grillo",
"given_name": "Jason"
},
{
"family_name": "Hale",
"given_name": "Dave",
"clpid": "Hale-Dave"
},
{
"family_name": "Hill",
"given_name": "Grant M.",
"orcid": "0000-0002-7648-9119"
},
{
"family_name": "Holden",
"given_name": "Bradford",
"orcid": "0000-0002-6153-3076"
},
{
"family_name": "Householder",
"given_name": "Aaron",
"orcid": "0000-0002-5812-3236"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Ishikawa",
"given_name": "Yuzo",
"orcid": "0000-0001-7572-5231"
},
{
"family_name": "Jelinsky",
"given_name": "Sharon R.",
"orcid": "0009-0006-2900-0401"
},
{
"family_name": "Kassis",
"given_name": "Marc",
"orcid": "0000-0001-8414-8771"
},
{
"family_name": "Kaye",
"given_name": "Stephen",
"clpid": "Kaye-Stephen"
},
{
"family_name": "Laher",
"given_name": "Russ",
"orcid": "0000-0003-2451-5482",
"clpid": "Laher-R-R"
},
{
"family_name": "Lanclos",
"given_name": "Kyle",
"orcid": "0009-0004-0592-1850"
},
{
"family_name": "Lee",
"given_name": "Chien-Hsiu",
"orcid": "0000-0003-1700-5740"
},
{
"family_name": "Lilley",
"given_name": "Scott"
},
{
"family_name": "McCarney",
"given_name": "Ben"
},
{
"family_name": "Miller",
"given_name": "Timothy N.",
"orcid": "0009-0005-2445-7544"
},
{
"family_name": "Payne",
"given_name": "Joel",
"orcid": "0009-0008-4293-0341"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Poppett",
"given_name": "Claire",
"orcid": "0000-0003-0512-5489"
},
{
"family_name": "Raffanti",
"given_name": "Michael"
},
{
"family_name": "Rockosi",
"given_name": "Constance",
"orcid": "0000-0002-6667-7028"
},
{
"family_name": "Sanford",
"given_name": "Dale"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-4046-987X"
},
{
"family_name": "Shaum",
"given_name": "Abby P.",
"orcid": "0000-0003-3133-6837",
"clpid": "Shaum-Abby-P"
},
{
"family_name": "Sirk",
"given_name": "Martin M.",
"orcid": "0009-0007-8555-8060"
},
{
"family_name": "Smith",
"given_name": "Roger",
"orcid": "0000-0001-7062-9726",
"clpid": "Smith-R-M"
},
{
"family_name": "Thorne",
"given_name": "Jim"
},
{
"family_name": "Valliant",
"given_name": "John"
},
{
"family_name": "Vandenberg",
"given_name": "Adam",
"orcid": "0009-0003-6534-0428"
},
{
"family_name": "Wang",
"given_name": "Shin Ywan",
"clpid": "Wang-Shin-Ywan"
},
{
"family_name": "Wishnow",
"given_name": "Edward"
},
{
"family_name": "Wold",
"given_name": "Truman"
},
{
"family_name": "Yeh",
"given_name": "Sherry"
},
{
"family_name": "Basu",
"given_name": "Sarbani",
"orcid": "0000-0002-6163-3472"
},
{
"family_name": "Bedell",
"given_name": "Megan",
"orcid": "0000-0001-9907-7742"
},
{
"family_name": "Cegla",
"given_name": "Heather M.",
"orcid": "0000-0001-8934-7315"
},
{
"family_name": "Crossfield",
"given_name": "Ian"
},
{
"family_name": "Dressing",
"given_name": "Courtney"
},
{
"family_name": "Dumusque",
"given_name": "Xavier",
"orcid": "0000-0002-9332-2011"
},
{
"family_name": "Knutson",
"given_name": "Heather",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-Heather"
},
{
"family_name": "Mawet",
"given_name": "Dimitri",
"orcid": "0000-0002-8895-4735",
"clpid": "Mawet-D"
},
{
"family_name": "O'Meara",
"given_name": "John",
"orcid": "0000-0002-7893-1054"
},
{
"family_name": "Stef\u00e1nsson",
"given_name": "Gu\u0111mundur",
"orcid": "0000-0001-7409-5688"
},
{
"family_name": "Teske",
"given_name": "Johanna",
"orcid": "0009-0008-2801-5040"
},
{
"family_name": "Vasisht",
"given_name": "Gautam",
"orcid": "0000-0002-1871-6264",
"clpid": "Vasisht-Gautam"
},
{
"family_name": "Wang",
"given_name": "Sharon Xuesong",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Wright",
"given_name": "Jason T.",
"orcid": "0000-0001-6160-5888"
}
],
"abstract": "Asteroseismology of dwarf stars cooler than the Sun is very challenging owing to the low amplitudes and rapid timescales of oscillations. Here we present the asteroseismic detection of solar-like oscillations at 4-minute timescales (ν_(max) ∼ 4300 μHz) in the nearby K dwarf σ Draconis using extreme-precision Doppler velocity observations from the Keck Planet Finder and 20 s cadence photometry from NASA's Transiting Exoplanet Survey Satellite. The star is the coolest dwarf star to date with both velocity and luminosity observations of solar-like oscillations, having amplitudes of 5.9 ± 0.8 cm s\u207b¹ and 0.8 ± 0.2 ppm, respectively. These measured values are in excellent agreement with established luminosity−velocity amplitude relations for oscillations and provide further evidence that mode amplitudes for stars with T_(eff) < 5500 K diminish in scale following an (L/M)^(1.5) relation. By modeling the star's oscillation frequencies from photometric data, we measure an asteroseismic age of 4.5 ± 0.9 (ran) ± 1.2 (sys) Gyr. The observations demonstrate the capability of next-generation spectrographs and precise space-based photometry to extend observational asteroseismology to nearby cool dwarfs, which are benchmarks for stellar astrophysics and prime targets for directly imaging planets using future space-based telescopes.
",
"doi": "10.3847/1538-4357/ad76a9",
"issn": "0004-637X",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal",
"publication_date": "2024-11-01",
"series_number": "1",
"volume": "975",
"issue": "1",
"pages": "147"
},
{
"id": "authors:45mea-2hq58",
"collection": "authors",
"collection_id": "45mea-2hq58",
"cite_using_url": "https://authors.library.caltech.edu/records/45mea-2hq58",
"type": "article",
"title": "The OATMEAL Survey. I. Low Stellar Obliquity in the Transiting Brown Dwarf System GPX-1",
"author": [
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Zanazzi",
"given_name": "J. J.",
"orcid": "0000-0002-9849-5886"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Carmichael",
"given_name": "Theron W.",
"orcid": "0000-0001-6416-1274"
},
{
"family_name": "Vowell",
"given_name": "Noah",
"orcid": "0000-0002-0701-4005"
},
{
"family_name": "Kesseli",
"given_name": "Aurora",
"orcid": "0000-0002-3239-5989",
"clpid": "Kesseli-Aurora"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Brodheim",
"given_name": "Max",
"orcid": "0009-0008-9808-0411"
},
{
"family_name": "Deich",
"given_name": "William",
"orcid": "0009-0000-3624-1330"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Gibson",
"given_name": "Steven R.",
"orcid": "0009-0004-4454-6053",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Hill",
"given_name": "Grant M.",
"orcid": "0000-0002-7648-9119"
},
{
"family_name": "Holden",
"given_name": "Bradford",
"orcid": "0000-0002-6153-3076"
},
{
"family_name": "Householder",
"given_name": "Aaron",
"orcid": "0000-0002-5812-3236"
},
{
"family_name": "Kaye",
"given_name": "Stephen",
"clpid": "Kaye-Stephen"
},
{
"family_name": "Laher",
"given_name": "Russ R.",
"orcid": "0000-0003-2451-5482",
"clpid": "Laher-Russ-R"
},
{
"family_name": "Lanclos",
"given_name": "Kyle",
"orcid": "0009-0004-0592-1850"
},
{
"family_name": "Payne",
"given_name": "Joel",
"orcid": "0009-0008-4293-0341"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-0091-7105"
},
{
"family_name": "Shaum",
"given_name": "Abby P.",
"orcid": "0000-0003-3133-6837",
"clpid": "Shaum-Abby-P"
},
{
"family_name": "Sirk",
"given_name": "Martin M.",
"orcid": "0009-0007-8555-8060"
},
{
"family_name": "Smith",
"given_name": "Chris"
},
{
"family_name": "Stef\u00e1nsson",
"given_name": "Gu\u00f0mundur",
"orcid": "0000-0001-7409-5688"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
},
{
"family_name": "Wang",
"given_name": "Sharon X.",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Yeh",
"given_name": "Sherry",
"orcid": "0000-0002-4037-3114"
}
],
"abstract": "We introduce the OATMEAL survey, an effort to measure the obliquities of stars with transiting brown dwarf companions. We observed a transit of the close-in (Porb = 1.74 days) brown dwarf GPX-1 b using the Keck Planet Finder spectrograph to measure the sky-projected angle between its orbital axis and the spin axis of its early F-type host star (λ). We measured λ = 69 ± 100, suggesting an orbit that is prograde and well aligned with the stellar equator. Hot Jupiters around early F stars are frequently found to have highly misaligned orbits, with polar and retrograde orbits being commonplace. It has been theorized that these misalignments stem from dynamical interactions, such as von Zeipel–Kozai–Lidov cycles, and are retained over long timescales due to weak tidal dissipation in stars with radiative envelopes. By comparing GPX-1 to similar systems under the frameworks of different tidal evolution theories, we argued that the rate of tidal dissipation is too slow to have re-aligned the system. This suggests that GPX-1 may have arrived at its close-in orbit via coplanar high-eccentricity migration or migration through an aligned protoplanetary disk. Our result for GPX-1 is one of few measurements of the obliquity of a star with a transiting brown dwarf. By enlarging the number of such measurements and comparing them with hot-Jupiter systems, we will more clearly discern the differences between the mechanisms that dictate the formation and evolution of both classes of objects.
",
"doi": "10.3847/1538-3881/ad785a",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2024-11",
"series_number": "5",
"volume": "168",
"issue": "5",
"pages": "189"
},
{
"id": "authors:gn5gn-t9r95",
"collection": "authors",
"collection_id": "gn5gn-t9r95",
"cite_using_url": "https://authors.library.caltech.edu/records/gn5gn-t9r95",
"type": "conference_item",
"title": "System design of the Keck Planet Finder",
"book_title": "Ground-based and Airborne Instrumentation for Astronomy X",
"author": [
{
"family_name": "Gibson",
"given_name": "Steven R.",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Rider",
"given_name": "Kodi"
},
{
"family_name": "Halverson",
"given_name": "Samuel P."
},
{
"family_name": "Roy",
"given_name": "Arpita"
},
{
"family_name": "Baker",
"given_name": "Ashley D.",
"orcid": "0000-0002-6525-7013",
"clpid": "Baker-Ashley-D"
},
{
"family_name": "Edelstein",
"given_name": "Jerry"
},
{
"family_name": "Smith",
"given_name": "Christopher"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
},
{
"family_name": "Brodheim",
"given_name": "Max"
},
{
"family_name": "Brown",
"given_name": "Matthew"
},
{
"family_name": "Chan",
"given_name": "Dwight"
},
{
"family_name": "Dai",
"given_name": "Fei"
},
{
"family_name": "Deich",
"given_name": "William"
},
{
"family_name": "Gottschalk",
"given_name": "Colby"
},
{
"family_name": "Grillo",
"given_name": "Jason"
},
{
"family_name": "Hale",
"given_name": "David",
"clpid": "Hale-David"
},
{
"family_name": "Hill",
"given_name": "Grant"
},
{
"family_name": "Holden",
"given_name": "Bradford P.",
"orcid": "0000-0002-6153-3076"
},
{
"family_name": "Householder",
"given_name": "Aaron"
},
{
"family_name": "Isaacson",
"given_name": "Howard"
},
{
"family_name": "Ishikawa",
"given_name": "Yuzo"
},
{
"family_name": "Jelinsky",
"given_name": "Sharon"
},
{
"family_name": "Kassis",
"given_name": "Marc F."
},
{
"family_name": "Kaye",
"given_name": "Stephen",
"clpid": "Kaye-Stephen"
},
{
"family_name": "Laher",
"given_name": "Russ",
"orcid": "0000-0003-2451-5482",
"clpid": "Laher-R-R"
},
{
"family_name": "Lanclos",
"given_name": "Kyle",
"orcid": "0009-0004-0592-1850"
},
{
"family_name": "Lee",
"given_name": "Chien-Hsiu",
"orcid": "0000-0003-1700-5740"
},
{
"family_name": "Lilley",
"given_name": "Scott"
},
{
"family_name": "McCarney",
"given_name": "Benjamin"
},
{
"family_name": "Miller",
"given_name": "Tim"
},
{
"family_name": "Payne",
"given_name": "Joel"
},
{
"family_name": "Petigura",
"given_name": "Erik"
},
{
"family_name": "Poppett",
"given_name": "Claire"
},
{
"family_name": "Raffanti",
"given_name": "Mike"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-Asa"
},
{
"family_name": "Sandford",
"given_name": "Dale"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-4046-987X"
},
{
"family_name": "Shaum",
"given_name": "Abby P.",
"orcid": "0000-0003-3133-6837",
"clpid": "Shaum-Abby-P"
},
{
"family_name": "Sirk",
"given_name": "Martin M."
},
{
"family_name": "Smith",
"given_name": "Roger",
"orcid": "0000-0001-7062-9726",
"clpid": "Smith-R-M"
},
{
"family_name": "Thorne",
"given_name": "Jim"
},
{
"family_name": "Valliant",
"given_name": "John"
},
{
"family_name": "Vandenberg",
"given_name": "Adam"
},
{
"family_name": "Wang",
"given_name": "Cindy",
"clpid": "Wang-Cindy"
},
{
"family_name": "Wishnow",
"given_name": "Edward"
},
{
"family_name": "Wold",
"given_name": "Truman"
},
{
"family_name": "Yeh",
"given_name": "Sherry",
"orcid": "0000-0002-4037-3114"
},
{
"family_name": "Baca",
"given_name": "Steve"
},
{
"family_name": "Beichman",
"given_name": "Charles A.",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-C-A"
},
{
"family_name": "Berriman",
"given_name": "Bruce",
"orcid": "0000-0001-8388-534X",
"clpid": "Berriman-Bruce"
},
{
"family_name": "Brown",
"given_name": "Thomas"
},
{
"family_name": "Casey",
"given_name": "Kelleen"
},
{
"family_name": "Chin",
"given_name": "Jason"
},
{
"family_name": "Chong",
"given_name": "James"
},
{
"family_name": "Cowley",
"given_name": "David"
},
{
"family_name": "Devenot",
"given_name": "Mark"
},
{
"family_name": "Elwir",
"given_name": "Hamza"
},
{
"family_name": "Finstad",
"given_name": "Daniel"
},
{
"family_name": "Fraysse",
"given_name": "Matthew"
},
{
"family_name": "James",
"given_name": "Ean"
},
{
"family_name": "Jhoti",
"given_name": "Elisha"
},
{
"family_name": "Killian",
"given_name": "Joe"
},
{
"family_name": "Levine",
"given_name": "Obie"
},
{
"family_name": "Li",
"given_name": "Adela"
},
{
"family_name": "Marin",
"given_name": "Eduardo",
"orcid": "0009-0009-6982-2137"
},
{
"family_name": "Milner",
"given_name": "Steven"
},
{
"family_name": "Nance",
"given_name": "Craig"
},
{
"family_name": "O'Hanlon",
"given_name": "Timothy",
"clpid": "O'Hanlon-Timothy-J"
},
{
"family_name": "Orr",
"given_name": "Daniel"
},
{
"family_name": "Ortiz-Soto",
"given_name": "Roberto"
},
{
"family_name": "Payne",
"given_name": "Tom"
},
{
"family_name": "Pember",
"given_name": "Jacob"
},
{
"family_name": "Raskin",
"given_name": "Gert"
},
{
"family_name": "Savage",
"given_name": "Maureen"
},
{
"family_name": "Seifahrt",
"given_name": "Andreas"
},
{
"family_name": "Smith",
"given_name": "Brett"
},
{
"family_name": "Storesund",
"given_name": "Rob"
},
{
"family_name": "St\u00fcrmer",
"given_name": "Julian"
},
{
"family_name": "Suominen",
"given_name": "Nick"
},
{
"family_name": "Tehero",
"given_name": "Jerez"
},
{
"family_name": "Von Boeckmann",
"given_name": "Tod"
},
{
"family_name": "Wages",
"given_name": "Keith"
},
{
"family_name": "Weisfeiler",
"given_name": "Marie"
},
{
"family_name": "Wilcox",
"given_name": "Mavourneen"
},
{
"family_name": "Wizinowich",
"given_name": "Peter",
"orcid": "0000-0002-1646-442X"
},
{
"family_name": "Wolfenberger",
"given_name": "Anna"
}
],
"editor": [
{
"family_name": "Vernet",
"given_name": "Jo\u00ebl R."
},
{
"family_name": "Bryant",
"given_name": "Julia J."
},
{
"family_name": "Motohara",
"given_name": "Kentaro"
}
],
"abstract": "The Keck Planet Finder (KPF) is a fiber-fed, high-resolution, echelle spectrometer that specializes in the discovery and characterization of exoplanets using Doppler spectroscopy. In designing KPF, the guiding principles were high throughput to promote survey speed and access to faint targets, and high stability to keep uncalibrated systematic Doppler measurement errors below 30 cm s\u22121. KPF achieves optical illumination stability with a tip-tilt injection system, octagonal cross-section optical fibers, a double scrambler, and active fiber agitation. The optical bench and optics with integral mounts are made of Zerodur to provide thermo-mechanical stability. The spectrometer includes a slicer to reformat the optical input, green and red channels (445\u2013600 nm and 600\u2013870 nm), and achieves a resolving power of \u223c97,000. Additional subsystems include a separate, medium-resolution UV spectrometer (383\u2013402 nm) to record the Ca II H K lines, an exposure meter for real-time flux monitoring, a solar feed for sunlight injection, and a calibration system with a laser frequency comb and etalon for wavelength calibration. KPF was installed and commissioned at the W. M. Keck Observatory in late 2022 and early 2023 and is now in regular use for scientific observations. This paper presents an overview of the as-built KPF instrument and its subsystems, design considerations, and initial on-sky performance.",
"doi": "10.1117/12.3017841",
"isbn": "9781510675162",
"publisher": "Society of Photo-Optical Instrumentation Engineers",
"place_of_publication": "Bellingham, WA",
"publication_date": "2024-07-18",
"pages": "9"
},
{
"id": "authors:wm64e-rdh07",
"collection": "authors",
"collection_id": "wm64e-rdh07",
"cite_using_url": "https://authors.library.caltech.edu/records/wm64e-rdh07",
"type": "article",
"title": "Confirmation and Characterization of the Eccentric, Warm Jupiter TIC 393818343 b with a Network of Citizen Scientists",
"author": [
{
"family_name": "Sgro",
"given_name": "Lauren A.",
"orcid": "0000-0001-6629-5399",
"clpid": "Sgro-Lauren-A"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Esposito",
"given_name": "Thomas M.",
"orcid": "0000-0002-0792-3719",
"clpid": "Esposito-Thomas-M"
},
{
"family_name": "Marchis",
"given_name": "Franck",
"orcid": "0000-0001-7016-7277",
"clpid": "Marchis-Franck"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X",
"clpid": "Dragomir-Diana"
},
{
"family_name": "Villanueva",
"given_name": "Steven",
"orcid": "0000-0001-6213-8804",
"clpid": "Villanueva-Steven"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Billiani",
"given_name": "Mario",
"orcid": "0000-0002-3278-9590",
"clpid": "Billiani-Mario"
},
{
"family_name": "Loose",
"given_name": "Margaret",
"orcid": "0000-0002-5215-4779",
"clpid": "Loose-Margaret"
},
{
"family_name": "Meneghelli",
"given_name": "Nicola",
"orcid": "0000-0002-5105-635X",
"clpid": "Meneghelli-Nicola"
},
{
"family_name": "Rivett",
"given_name": "Darren",
"orcid": "0000-0002-1240-6580",
"clpid": "Rivett-Darren"
},
{
"family_name": "Saibi",
"given_name": "Fadi",
"orcid": "0009-0003-6483-0433",
"clpid": "Saibi-Fadi"
},
{
"family_name": "Saibi",
"given_name": "Sophie",
"orcid": "0009-0006-8494-5408",
"clpid": "Saibi-Sophie"
},
{
"family_name": "Martin",
"given_name": "Bryan",
"orcid": "0009-0005-2850-1098",
"clpid": "Martin-Bryan"
},
{
"family_name": "Lekkas",
"given_name": "Georgios",
"orcid": "0000-0003-3559-0840",
"clpid": "Lekkas-Georgios"
},
{
"family_name": "Zaharevitz",
"given_name": "Daniel",
"clpid": "Zaharevitz-Daniel"
},
{
"family_name": "Zellem",
"given_name": "Robert T.",
"orcid": "0000-0001-7547-0398",
"clpid": "Zellem-Robert-T"
},
{
"family_name": "Terentev",
"given_name": "Ivan A.",
"orcid": "0000-0002-0654-4442",
"clpid": "Terentev-Ivan-A"
},
{
"family_name": "Gagliano",
"given_name": "Robert",
"orcid": "0000-0002-5665-1879",
"clpid": "Gagliano-Robert"
},
{
"family_name": "Jacobs",
"given_name": "Thomas Lee",
"orcid": "0000-0003-3988-3245",
"clpid": "Jacobs-Thomas-Lee"
},
{
"family_name": "Kristiansen",
"given_name": "Martti H.",
"orcid": "0000-0002-2607-138X",
"clpid": "Kristiansen-Martti-H"
},
{
"family_name": "LaCourse",
"given_name": "Daryll M.",
"orcid": "0000-0002-8527-2114",
"clpid": "LaCourse-Daryll-M"
},
{
"family_name": "Omohundro",
"given_name": "Mark",
"clpid": "Omohundro-Mark"
},
{
"family_name": "Schwengeler",
"given_name": "Hans M.",
"orcid": "0000-0002-1637-2189",
"clpid": "Schwengeler-Hans-M"
}
],
"abstract": "\n
NASA's Transiting Exoplanet Survey Satellite (TESS) has identified over 7000 candidate exoplanets via the transit method, with gas giants among the most readily detected due to their large radii. Even so, long intervals between TESS observations for much of the sky lead to candidates for which only a single transit is detected in one TESS sector, leaving those candidate exoplanets with unconstrained orbital periods. Here, we confirm the planetary nature of TIC 393818343 b, originally identified via a single TESS transit, using radial velocity data and ground-based photometric observations from citizen scientists with the Unistellar Network and Exoplanet Watch. We determine a period of P = 16.24921_(−0.00011)^(+0.00010) days, a mass MP = 4.34 ± 0.15 MJ, and semimajor axis a = 0.1291_(−0.0022)^(+0.0021) au, placing TIC 393818343 b in the \"warm Jupiter\" population of exoplanets. With an eccentricity e = 0.6058 ± 0.0023, TIC 393818343 b is the most eccentric warm Jupiter to be discovered by TESS orbiting less than 0.15 au from its host star and therefore an excellent candidate for follow-up, as it may inform our future understanding of how hot and warm Jupiter populations are linked.
\n
\n
The Transiting Exoplanet Survey Satellite (TESS) has discovered hundreds of new worlds, with TESS planet candidates now outnumbering the total number of confirmed planets from Kepler. Owing to differences in survey design, TESS continues to provide planets that are better suited for subsequent follow-up studies, including mass measurement through radial velocity (RV) observations, compared to Kepler targets. In this work, we present the TESS-Keck Survey's (TKS) Mass Catalog: a uniform analysis of all TKS RV survey data that has resulted in mass constraints for 126 planets and candidate signals. This includes 58 mass measurements that have reached ≥5σ precision. We confirm or validate 32 new planets from the TESS mission either by significant mass measurement (15) or statistical validation (17), and we find no evidence of likely false positives among our entire sample. This work also serves as a data release for all previously unpublished TKS survey data, including 9,204 RV measurements and associated activity indicators over our three-year survey. We took the opportunity to assess the performance of our survey and found that we achieved many of our goals, including measuring the mass of 38 small (<4 R⊕) planets, nearly achieving the TESS mission's basic science requirement. In addition, we evaluated the performance of the Automated Planet Finder as survey support and observed meaningful constraints on system parameters, due to its more uniform phase coverage. Finally, we compared our measured masses to those predicted by commonly used mass–radius relations and investigated evidence of systematic bias.
\n
\n
We confirm a massive sub-Neptune-sized planet on a P = 22.8 days orbit around the star TOI-1824 (Teff = 5200 K, V = 9.7 mag). TESS first identified TOI-1824 b (formerly TOI-1824.01) as an object of interest in 2020 April after two transits in Sector 22 were matched with a single transit in Sector 21. TOI-1824 was subsequently targeted for ground-based Doppler monitoring with Keck-HIRES and APF-Levy. Using a joint model of the TESS photometry, radial velocities, and Ca ii H and K emission measurements as an activity indicator, we find that TOI-1824 b is an unusually dense sub-Neptune. The planet has a radius Rp = 2.63 ± 0.15 R⊕ and mass Mp = 18.5 ± 3.2 M⊕, implying a bulk density of 5.6 ± 1.4 g cm−3. TOI-1824 b's mass and radius situate it near a small group of \"superdense sub-Neptunes\" (Rp \u2272 3 R⊕ and Mp \u2273 20 M⊕). While the formation mechanism of superdense sub-Neptunes is a mystery, one possible explanation is the constructive collision of primordial icy cores; such giant impacts would drive atmospheric escape and could help explain these planets' apparent lack of massive envelopes. We discuss TOI-1824 b in the context of these overdense planets, whose unique location in the exoplanet mass–radius plane make them a potentially valuable tracer of planet formation.
\n
\n
We propose a second-order statistic parameter ε, the relative occurrence rate between hot Jupiters (HJs) and cold Jupiters (CJs) (ε = ηHJ/ηCJ), to probe the migration of gas giants. Since the planet occurrence rate is the combined outcome of the formation and migration processes, a joint analysis of HJ and CJ frequency may shed light on the dynamical evolution of giant planet systems. We first investigate the behavior of ε as the stellar mass changes observationally. Based on the occurrence rate measurements of HJs (ηHJ) from the Transiting Exoplanet Survey Satellite survey and CJs (ηCJ) from the California Legacy Survey, we find a tentative trend (97% confidence) that ε drops when the stellar mass rises from 0.8 to 1.4 M\u2299, which can be explained by different giant planet growth and disk migration timescales around different stars. We carry out planetesimal and pebble accretion simulations, both of which can reproduce the results of ηHJ, ηCJ, and ε. Our findings indicate that the classical core accretion + disk migration model can explain the observed decreasing trend of ε. We propose two ways to increase the significance of the trend and verify the anticorrelation. Future works are required to better constrain ε, especially for M dwarfs and for more massive stars.
\n
\n
JWST has ushered in an era of unprecedented ability to characterize exoplanetary atmospheres. While there are over 5000 confirmed planets, more than 4000 Transiting Exoplanet Survey Satellite (TESS) planet candidates are still unconfirmed and many of the best planets for atmospheric characterization may remain to be identified. We present a sample of TESS planets and planet candidates that we identify as \"best-in-class\" for transmission and emission spectroscopy with JWST. These targets are sorted into bins across equilibrium temperature Teq and planetary radius Rp and are ranked by a transmission and an emission spectroscopy metric (TSM and ESM, respectively) within each bin. We perform cuts for expected signal size and stellar brightness to remove suboptimal targets for JWST. Of the 194 targets in the resulting sample, 103 are unconfirmed TESS planet candidates, also known as TESS Objects of Interest (TOIs). We perform vetting and statistical validation analyses on these 103 targets to determine which are likely planets and which are likely false positives, incorporating ground-based follow-up from the TESS Follow-up Observation Program to aid the vetting and validation process. We statistically validate 18 TOIs, marginally validate 31 TOIs to varying levels of confidence, deem 29 TOIs likely false positives, and leave the dispositions for four TOIs as inconclusive. Twenty-one of the 103 TOIs were confirmed independently over the course of our analysis. We intend for this work to serve as a community resource and motivate formal confirmation and mass measurements of each validated planet. We encourage more detailed analysis of individual targets by the community.
\n
\n
The Transiting Exoplanet Survey Satellite (TESS) continues to increase dramatically the number of known transiting exoplanets, and is optimal for monitoring bright stars amenable to radial velocity (RV) and atmospheric follow-up observations. TOI-1386 is a solar-type (G5V) star that was detected via TESS photometry to exhibit transit signatures in three sectors with a period of 25.84 days. We conducted follow-up RV observations using Keck/High Resolution Echelle Spectrometer (HIRES) as part of the TESS–Keck Survey, collecting 64 RV measurements of TOI-1386 with the HIRES spectrograph over 2.5 yr. Our combined fit of the TOI-1386 photometry and RV data confirm the planetary nature of the detected TESS signal, and provide a mass and radius for planet b of 0.148 ± 0.019 MJ and 0.540 ± 0.017 RJ, respectively, marking TOI-1386 b as a warm sub-Saturn planet. Our RV data further reveal an additional outer companion, TOI-1386 c, with an estimated orbital period of 227.6 days and a minimum mass of 0.309 ± 0.038 MJ. The dynamical modeling of the system shows that the measured system architecture is long-term stable, although there may be substantial eccentricity oscillations of the inner planet due to the dynamical influence of the outer planet.
\n
The extreme environments of ultra-short-period planets (USPs) make excellent laboratories to study how exoplanets obtain, lose, retain, and/or regain gaseous atmospheres. We present the confirmation and characterization of the USP TOI-1347 b, a 1.8 ± 0.1 R⊕ planet on a 0.85 day orbit that was detected with photometry from the TESS mission. We measured radial velocities of the TOI-1347 system using Keck/HIRES and HARPS-N and found the USP to be unusually massive at 11.1 ± 1.2 M⊕. The measured mass and radius of TOI-1347 b imply an Earth-like bulk composition. A thin H/He envelope (>0.01% by mass) can be ruled out at high confidence. The system is between 1 and 1.8 Gyr old; therefore, intensive photoevaporation should have concluded. We detected a tentative phase-curve variation (3σ) and a secondary eclipse (2σ) in TESS photometry, which, if confirmed, could indicate the presence of a high-mean-molecular-weight atmosphere. We recommend additional optical and infrared observations to confirm the presence of an atmosphere and investigate its composition.
",
"doi": "10.3847/1538-3881/ad28bb",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2024-04",
"series_number": "4",
"volume": "167",
"issue": "4",
"pages": "153"
},
{
"id": "authors:88haz-4cd06",
"collection": "authors",
"collection_id": "88haz-4cd06",
"cite_using_url": "https://authors.library.caltech.edu/records/88haz-4cd06",
"type": "article",
"title": "Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. IV. Long-term Doppler Spectroscopy for 11 Stars Thought to Host Cool Giant Exoplanets",
"author": [
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Schwieterman",
"given_name": "Edward W.",
"orcid": "0000-0002-2949-2163"
},
{
"family_name": "Thorngren",
"given_name": "Daniel P.",
"orcid": "0000-0002-5113-8558"
},
{
"family_name": "Fortney",
"given_name": "Jonathan",
"orcid": "0000-0002-9843-4354"
},
{
"family_name": "Vowell",
"given_name": "Noah",
"orcid": "0000-0002-0701-4005"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah"
},
{
"family_name": "Brinkman",
"given_name": "Casey L.",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Kosiarek",
"given_name": "Molly",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Mayo",
"given_name": "Andrew W.",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Kipping",
"given_name": "David",
"orcid": "0000-0002-4365-7366"
},
{
"family_name": "Payne",
"given_name": "Matthew J.",
"orcid": "0000-0001-5133-6303"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Teachey",
"given_name": "Alex",
"orcid": "0000-0003-2331-5606"
},
{
"family_name": "Villanueva",
"given_name": "Steven, Jr.",
"orcid": "0000-0001-6213-8804"
}
],
"abstract": "\n
Discovering and characterizing exoplanets at the outer edge of the transit method's sensitivity has proven challenging owing to geometric biases and the practical difficulties associated with acquiring long observational baselines. Nonetheless, a sample of giant exoplanets on orbits longer than 100 days has been identified by transit hunting missions. We present long-term Doppler spectroscopy for 11 such systems with observation baselines spanning a few years to a decade. We model these radial velocity observations jointly with transit photometry to provide initial characterizations of these objects and the systems in which they exist. Specifically, we make new precise mass measurements for four long-period giant exoplanets (Kepler-111 c, Kepler-553 c, Kepler-849 b, and PH-2 b), we place new upper limits on mass for four others (Kepler-421 b, KOI-1431.01, Kepler-1513 b, and Kepler-952 b), and we show that several confirmed planets are in fact not planetary at all. We present these findings to complement similar efforts focused on closer-in short-period giant planets, and with the hope of inspiring future dedicated studies of cool giant exoplanets.
\n
\n
We present a radial velocity (RV) analysis of TOI-1136, a bright Transiting Exoplanet Survey Satellite (TESS) system with six confirmed transiting planets, and a seventh single-transiting planet candidate. All planets in the system are amenable to transmission spectroscopy, making TOI-1136 one of the best targets for intra-system comparison of exoplanet atmospheres. TOI-1136 is young (∼700 Myr), and the system exhibits transit timing variations (TTVs). The youth of the system contributes to high stellar variability on the order of 50 m s−1, much larger than the likely RV amplitude of any of the transiting exoplanets. Utilizing 359 High Resolution Echelle Spectrometer and Automated Planet Finder RVs collected as part of the TESS-Keck Survey, and 51 High-Accuracy Radial velocity Planetary Searcher North RVs, we experiment with a joint TTV-RV fit. With seven possible transiting planets, TTVs, more than 400 RVs, and a stellar activity model, we posit that we may be presenting the most complex mass recovery of an exoplanet system in the literature to date. By combining TTVs and RVs, we minimized Gaussian process overfitting and retrieved new masses for this system: (mb−g = 3.50_(−0.7)^(+0.8), 6.32_(−1.3)^(+1.1), 8.35_(−1.6)^(+1.8), 6.07_(−1.01)^(+1.09), 9.7_(−3.7)^(+3.9), 5.6_(−3.2)^(+4.1) M⊕). We are unable to significantly detect the mass of the seventh planet candidate in the RVs, but we are able to loosely constrain a possible orbital period near 80 days. Future TESS observations might confirm the existence of a seventh planet in the system, better constrain the masses and orbital properties of the known exoplanets, and generally shine light on this scientifically interesting system.
\n
\n
Surveys of exoplanet host stars are valuable tools for assessing population level trends in exoplanets, and their outputs can include stellar ages, activity, and rotation periods. We extracted chromospheric activity measurements from the California-Kepler Survey Gaia survey spectra in order to probe connections between stellar activity and fundamental stellar properties. Building on the California Kepler Survey's legacy of 1189 planet host star stellar properties including temperature, surface gravity metallicity, and isochronal age, we add measurements of the Ca ii H and K lines as a proxy for chromospheric activity for 879 planet hosting stars. We used these chromospheric activity measurements to derive stellar rotation periods. We find a discrepancy between photometrically derived and activity-derived rotation periods for stars on the Rossby Ridge. These results support the theory of weakened magnetic braking. We find no evidence for metallicity-dependent activity relations, within the metallicity range of −0.2 to +0.3 dex. With our single epoch spectra we identify stars that are potentially in Maunder minimum–like state using a combination of log(R_(HK)′) and position below the main sequence. We do not yet have the multiyear time series needed to verify stars in Maunder minimum–like states. These results can help inform future theoretical studies that explore the relationship between stellar activity, stellar rotation, and magnetic dynamos.
\n
Despite the importance of Jupiter and Saturn to Earth's formation and habitability, there has not yet been a comprehensive observational study of how giant exoplanets correlate with the architectural properties of close-in, sub-Neptune-sized exoplanets. This is largely because transit surveys are particularly insensitive to planets at orbital separations \u22731 au, and so their census of Jupiter-like planets is incomplete, inhibiting our study of the relationship between Jupiter-like planets and the small planets that do transit. To investigate the relationship between close-in, small and distant, giant planets, we conducted the Kepler Giant Planet Survey (KGPS). Using the W. M. Keck Observatory High Resolution Echelle Spectrometer, we spent over a decade collecting 2844 radial velocities (RVs; 2167 of which are presented here for the first time) of 63 Sunlike stars that host 157 transiting planets. We had no prior knowledge of which systems would contain giant planets beyond 1 au, making this survey unbiased with respect to previously detected Jovians. We announce RV-detected companions to 20 stars from our sample. These include 13 Jovians (0.3 M_J < M sin \u2061i < 13 M_J, 1 au < a < 10 au), eight nontransiting sub-Saturns, and three stellar-mass companions. We also present updated masses and densities of 84 transiting planets. The KGPS project leverages one of the longest-running and most data-rich collections of RVs of the NASA Kepler systems yet, and it will provide a basis for addressing whether giant planets help or hinder the growth of sub-Neptune-sized and terrestrial planets. Future KGPS papers will examine the relationship between small, transiting planets and their long-period companions.
",
"doi": "10.3847/1538-4365/ad0cab",
"issn": "0067-0049",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Supplement Series",
"publication_date": "2024-01",
"series_number": "1",
"volume": "270",
"issue": "1",
"pages": "8"
},
{
"id": "authors:efd3g-p2669",
"collection": "authors",
"collection_id": "efd3g-p2669",
"cite_using_url": "https://authors.library.caltech.edu/records/efd3g-p2669",
"type": "article",
"title": "The California Legacy Survey. IV. Lonely, Poor, and Eccentric: A Comparison between Solitary and Neighborly Gas Giants",
"author": [
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
}
],
"abstract": "We compare systems with single giant planets to systems with multiple giant planets using a catalog of planets from a high-precision radial velocity survey of FGKM stars. Our comparison focuses on orbital properties, planet masses, and host-star properties. We use hierarchical methods to model the orbital eccentricity distributions of giant singles and giant multiples, and find that the distributions are distinct. The multiple giant planets typically have moderate eccentricities and their eccentricity distribution extends to e = 0.47 (90th percentile), while the single giant planets have a pileup of nearly circular orbits and a long tail that extends to e = 0.77. We determine that the stellar hosts of multiple giants are distinctly more metal rich than the hosts of solitary giants, with respective mean metallicities of 0.228 \u00b1 0.027 versus 0.129 \u00b1 0.019 dex. We measure the distinct occurrence distributions of single and multiple giants with respect to orbital separation, and find that single gas giants have a \u223c2.3\u03c3 significant hot Jupiter (a < 0.06) pileup not seen among multigiant systems. We find that the median mass (M sin i) of giants in multiples is nearly double that of single giants (1.71 M_J versus 0.92 M_J). We find that giant planets in the same system have correlated masses, analogous to the \"peas in a pod\" effect seen among less-massive planets.
",
"doi": "10.3847/1538-4365/acffc0",
"issn": "0067-0049",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Supplement Series",
"publication_date": "2024-01",
"series_number": "1",
"volume": "270",
"issue": "1",
"pages": "1"
},
{
"id": "authors:nr63m-n4p87",
"collection": "authors",
"collection_id": "nr63m-n4p87",
"cite_using_url": "https://authors.library.caltech.edu/records/nr63m-n4p87",
"type": "article",
"title": "Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. III. Recovery and Confirmation of a Temperate, Mildly Eccentric, Single-transit Jupiter Orbiting TOI-2010",
"author": [
{
"family_name": "Mann",
"given_name": "Christopher R.",
"orcid": "0000-0002-9312-0073"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Lafreni\u00e8re",
"given_name": "David",
"orcid": "0000-0002-6780-4252"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "H\u00e9brard",
"given_name": "Guillaume"
},
{
"family_name": "Boisse",
"given_name": "Isabelle"
},
{
"family_name": "Dalal",
"given_name": "Shweta",
"orcid": "0000-0001-9545-2357"
},
{
"family_name": "Deleuil",
"given_name": "Magali",
"orcid": "0000-0001-6036-0225"
},
{
"family_name": "Delfosse",
"given_name": "Xavier",
"orcid": "0000-0001-5099-7978"
},
{
"family_name": "Demangeon",
"given_name": "Olivier",
"orcid": "0000-0001-7918-0355"
},
{
"family_name": "Forveille",
"given_name": "Thierry",
"orcid": "0000-0003-0536-4607"
},
{
"family_name": "Heidari",
"given_name": "Neda"
},
{
"family_name": "Kiefer",
"given_name": "Flavien",
"orcid": "0000-0001-9129-4929"
},
{
"family_name": "Martioli",
"given_name": "Eder",
"orcid": "0000-0002-5084-168X"
},
{
"family_name": "Moutou",
"given_name": "Claire",
"orcid": "0000-0002-2842-3924"
},
{
"family_name": "Endl",
"given_name": "Michael",
"orcid": "0000-0002-7714-6310"
},
{
"family_name": "Cochran",
"given_name": "William D.",
"orcid": "0000-0001-9662-3496"
},
{
"family_name": "MacQueen",
"given_name": "Phillip"
},
{
"family_name": "Marchis",
"given_name": "Franck",
"orcid": "0000-0001-7016-7277"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Gupta",
"given_name": "Arvind F.",
"orcid": "0000-0002-5463-9980"
},
{
"family_name": "Feliz",
"given_name": "Dax L.",
"orcid": "0000-0002-2457-7889"
},
{
"family_name": "Nicholson",
"given_name": "Belinda A.",
"orcid": "0000-0003-1360-4404"
},
{
"family_name": "Ziegler",
"given_name": "Carl"
},
{
"family_name": "Villanueva",
"given_name": "Steven",
"orcid": "0000-0001-6213-8804"
},
{
"family_name": "Rowe",
"given_name": "Jason",
"orcid": "0000-0002-5904-1865"
},
{
"family_name": "Talens",
"given_name": "Geert Jan",
"orcid": "0000-0003-4787-2335"
},
{
"family_name": "Thorngren",
"given_name": "Daniel",
"orcid": "0000-0002-5113-8558"
},
{
"family_name": "LaCourse",
"given_name": "Daryll",
"orcid": "0000-0002-8527-2114"
},
{
"family_name": "Jacobs",
"given_name": "Tom",
"orcid": "0000-0003-3988-3245"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Rabus",
"given_name": "Markus",
"orcid": "0000-0003-2935-7196"
},
{
"family_name": "Fetherolf",
"given_name": "Tara",
"orcid": "0000-0002-3551-279X"
},
{
"family_name": "Hellier",
"given_name": "Coel",
"orcid": "0000-0002-3439-1439"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Plavchan",
"given_name": "Peter",
"orcid": "0000-0002-8864-1667"
},
{
"family_name": "Reefe",
"given_name": "Michael",
"orcid": "0000-0003-4701-8497"
},
{
"family_name": "Combs",
"given_name": "Deven"
},
{
"family_name": "Bowen",
"given_name": "Michael"
},
{
"family_name": "Wittrock",
"given_name": "Justin",
"orcid": "0000-0002-7424-9891"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Barclay",
"given_name": "Thomas",
"orcid": "0000-0001-7139-2724"
},
{
"family_name": "Watanabe",
"given_name": "David",
"orcid": "0000-0002-3555-8464"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Eastman",
"given_name": "Jason D.",
"orcid": "0000-0003-3773-5142"
},
{
"family_name": "Ting",
"given_name": "Eric B.",
"orcid": "0000-0002-8219-9505"
}
],
"abstract": "Large-scale exoplanet surveys like the Transiting Exoplanet Survey Satellite (TESS) mission are powerful tools for discovering large numbers of exoplanet candidates. Single-transit events are commonplace within the resulting candidate list due to the unavoidable limitation of the observing baseline. These single-transit planets often remain unverified due to their unknown orbital periods and consequent difficulty in scheduling follow-up observations. In some cases, radial velocity (RV) follow up can constrain the period enough to enable a future targeted transit detection. We present the confirmation of one such planet: TOI-2010 b. Nearly three years of RV coverage determined the period to a level where a broad window search could be undertaken with the Near-Earth Object Surveillance Satellite, detecting an additional transit. An additional detection in a much later TESS sector solidified our final parameter estimation. We find TOI-2010 b to be a Jovian planet (MP = 1.29 MJup, RP = 1.05 RJup) on a mildly eccentric orbit (e = 0.21) with a period of P = 141.83403 days. Assuming a simple model with no albedo and perfect heat redistribution, the equilibrium temperature ranges from about 360 to 450 K from apastron to periastron. Its wide orbit and bright host star (V = 9.85) make TOI-2010 b a valuable test bed for future low-insolation atmospheric analysis.
",
"doi": "10.3847/1538-3881/ad00bc",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-12",
"series_number": "6",
"volume": "166",
"issue": "6",
"pages": "239"
},
{
"id": "authors:9bx3q-j6j32",
"collection": "authors",
"collection_id": "9bx3q-j6j32",
"cite_using_url": "https://authors.library.caltech.edu/records/9bx3q-j6j32",
"type": "article",
"title": "Staring at the Sun with the Keck Planet Finder: An Autonomous Solar Calibrator for High Signal-to-noise Sun-as-a-star Spectra",
"author": [
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel"
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295",
"clpid": "Walawender-Josh"
},
{
"family_name": "Hill",
"given_name": "Grant M.",
"orcid": "0000-0002-7648-9119",
"clpid": "Hill-Grant-M"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Brown",
"given_name": "Matthew",
"orcid": "0000-0001-6516-6915",
"clpid": "Brown-Matthew"
},
{
"family_name": "Ida",
"given_name": "Evan",
"clpid": "Ida-Evan"
},
{
"family_name": "Tehero",
"given_name": "Jerez",
"clpid": "Tehero-Jerez"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Gibson",
"given_name": "Steven R.",
"orcid": "0000-0002-1495-760X",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Kassis",
"given_name": "Marc",
"orcid": "0000-0001-8414-8771",
"clpid": "Kassis-Marc"
},
{
"family_name": "Smith",
"given_name": "Brett",
"clpid": "Smith-Brett"
},
{
"family_name": "Wold",
"given_name": "Truman",
"clpid": "Wold-Truman"
},
{
"family_name": "Payne",
"given_name": "Joel",
"clpid": "Payne-Joel"
}
],
"abstract": "Extreme precision radial velocity (EPRV) measurements contend with internal noise (instrumental systematics) and external noise (intrinsic stellar variability) on the road to 10 cm s\u207b\u00b9 \"exo-Earth\" sensitivity. Both of these noise sources are well-probed using \"Sun-as-a-star\" RVs and cross-instrument comparisons. We built the Solar Calibrator (SoCal), an autonomous system that feeds stable, disk-integrated sunlight to the recently commissioned Keck Planet Finder (KPF) at the W. M. Keck Observatory. With SoCal, KPF acquires signal-to-noise ratio (S/N) \u223c 1200, R = 98,000 optical (445\u2013870 nm) spectra of the Sun in 5 s exposures at unprecedented cadence for an EPRV facility using KPF's fast readout mode (<16 s between exposures). Daily autonomous operation is achieved by defining an operations loop using state machine logic. Data affected by clouds are automatically flagged using a reliable quality control metric derived from simultaneous irradiance measurements. Comparing solar data across the growing global network of EPRV spectrographs with solar feeds will allow EPRV teams to disentangle internal and external noise sources and benchmark spectrograph performance. To facilitate this, all SoCal data products are immediately available to the public on the Keck Observatory Archive. We compared SoCal RVs to contemporaneous RVs from NEID, the only other immediately public EPRV solar data set. We find agreement at the 30\u201340 cm s\u207b\u00b9 level on timescales of several hours, which is comparable to the combined photon-limited precision. Data from SoCal were also used to assess a detector problem and wavelength calibration inaccuracies associated with KPF during early operations. Long-term SoCal operations will collect upwards of 1000 solar spectra per six-hour day using KPF's fast readout mode, enabling stellar activity studies at high S/N on our nearest solar-type star.
",
"doi": "10.1088/1538-3873/ad0b30",
"issn": "0004-6280",
"publisher": "IOP Publishing",
"publication": "Publications of the Astronomical Society of the Pacific",
"publication_date": "2023-12",
"series_number": "1054",
"volume": "135",
"issue": "1054",
"pages": "125002"
},
{
"id": "authors:bw1y9-tbt55",
"collection": "authors",
"collection_id": "bw1y9-tbt55",
"cite_using_url": "https://authors.library.caltech.edu/records/bw1y9-tbt55",
"type": "article",
"title": "A Mini-Neptune Orbiting the Metal-poor K Dwarf BD+29 2654",
"author": [
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Schlaufman",
"given_name": "Kevin C.",
"orcid": "0000-0001-5761-6779"
},
{
"family_name": "Reggiani",
"given_name": "Henrique",
"orcid": "0000-0001-6533-6179"
},
{
"family_name": "Bouma",
"given_name": "Luke",
"orcid": "0000-0002-0514-5538",
"clpid": "Bouma-Luke-G"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Pidhorodetska",
"given_name": "Daria",
"orcid": "0000-0001-9771-7953"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Holcomb",
"given_name": "Rae",
"orcid": "0000-0002-5034-9476"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Crossfield",
"given_name": "Ian",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Belinski",
"given_name": "Alexander A.",
"orcid": "0000-0003-2228-7914"
},
{
"family_name": "Boyle",
"given_name": "Andrew W.",
"orcid": "0000-0001-6037-2971",
"clpid": "Boyle-Andrew-W"
},
{
"family_name": "Burke",
"given_name": "Christopher J.",
"orcid": "0000-0002-7754-9486"
},
{
"family_name": "Castro-Gonz\u00e1lez",
"given_name": "Amadeo",
"orcid": "0000-0001-7439-3618"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Daylan",
"given_name": "Tansu",
"orcid": "0000-0002-6939-9211"
},
{
"family_name": "Fukui",
"given_name": "Akihiko",
"orcid": "0000-0002-4909-5763"
},
{
"family_name": "Gill",
"given_name": "Holden",
"orcid": "0000-0001-6171-7951"
},
{
"family_name": "Guerrero",
"given_name": "Natalia M.",
"orcid": "0000-0002-5169-9427"
},
{
"family_name": "Hellier",
"given_name": "Coel",
"orcid": "0000-0002-3439-1439"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Lillo-Box",
"given_name": "Jorge",
"orcid": "0000-0003-3742-1987"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Pall\u00e9",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Rodriguez",
"given_name": "David R.",
"orcid": "0000-0003-1286-5231"
},
{
"family_name": "Savel",
"given_name": "Arjun B.",
"orcid": "0000-0002-2454-768X"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Striegel",
"given_name": "Stephanie",
"orcid": "0009-0008-5145-0446"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "We report the discovery and Doppler mass measurement of a 7.4 days 2.3 R⊕ mini-Neptune around a metal-poor K dwarf BD+29 2654 (TOI-2018). Based on a high-resolution Keck/HIRES spectrum, the Gaia parallax, and multiwavelength photometry from the UV to the mid-infrared, we found that the host star has \ud835\udc47_(eff) = 4174\u208b\u2084\u2082\u207a³\u2074 K, log \ud835\udc54 = 4.62_(−0.03)^(+0.02), [Fe/H] = − 0.58 ± 0.18, M* = 0.57 ± 0.02 M\u2299, and R* = 0.62 ± 0.01 R\u2299. Precise Doppler measurements with Keck/HIRES revealed a planetary mass of Mp = 9.2 ± 2.1 M⊕ for TOI-2018 b. TOI-2018 b has a mass and radius that are consistent with an Earthlike core, with a ∼1%-by-mass hydrogen/helium envelope or an ice–rock mixture. The mass of TOI-2018 b is close to the threshold for runaway accretion and hence giant planet formation. Such a threshold is predicted to be around 10M⊕ or lower for a low-metallicity (low-opacity) environment. If TOI-2018 b is a planetary core that failed to undergo runaway accretion, it may underline the reason why giant planets are rare around low-metallicity host stars (one possibility is their shorter disk lifetimes). With a K-band magnitude of 7.1, TOI-2018 b may be a suitable target for transmission spectroscopy with the James Webb Space Telescope. The system is also amenable to metastable Helium observation; the detection of a Helium exosphere would help distinguish between a H/He-enveloped planet and a water world.
",
"doi": "10.3847/1538-3881/acdee8",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-08",
"series_number": "2",
"volume": "166",
"issue": "2",
"pages": "49"
},
{
"id": "authors:6cg3z-8xb09",
"collection": "authors",
"collection_id": "6cg3z-8xb09",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230710-599244800.13",
"type": "article",
"title": "The TESS-Keck Survey. XV. Precise Properties of 108 TESS Planets and Their Host Stars",
"author": [
{
"family_name": "MacDougall",
"given_name": "Mason G.",
"orcid": "0000-0003-2562-9043",
"clpid": "MacDougall-Mason-G"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Gilbert",
"given_name": "Gregory J.",
"orcid": "0000-0003-0742-1660"
},
{
"family_name": "Angelo",
"given_name": "Isabel",
"orcid": "0000-0002-9751-2664"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Brinkman",
"given_name": "Casey",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fetherolf",
"given_name": "Tara",
"orcid": "0000-0002-3551-279X"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Holcomb",
"given_name": "Rae",
"orcid": "0000-0002-5034-9476"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Pidhorodetska",
"given_name": "Daria",
"orcid": "0000-0001-9771-7953"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280"
},
{
"family_name": "Turtelboom",
"given_name": "Emma V.",
"orcid": "0000-0002-1845-2617"
},
{
"family_name": "Tyler",
"given_name": "Dakotah",
"orcid": "0000-0003-0298-4667"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Yee",
"given_name": "Samuel W.",
"orcid": "0000-0001-7961-3907"
}
],
"abstract": "We present the stellar and planetary properties for 85 TESS Objects of Interest (TOIs) hosting 108 planet candidates that compose the TESS-Keck Survey (TKS) sample. We combine photometry, high-resolution spectroscopy, and Gaia parallaxes to measure precise and accurate stellar properties. We then use these parameters as inputs to a light-curve processing pipeline to recover planetary signals and homogeneously fit their transit properties. Among these transit fits, we detect significant transit-timing variations among at least three multiplanet systems (TOI-1136, TOI-1246, TOI-1339) and at least one single-planet system (TOI-1279). We also reduce the uncertainties on planet-to-star radius ratios R_p/R\u22c6 across our sample, from a median fractional uncertainty of 8.8% among the original TOI Catalog values to 3.0% among our updated results. With this improvement, we are able to recover the Radius Gap among small TKS planets and find that the topology of the Radius Gap among our sample is broadly consistent with that measured among Kepler planets. The stellar and planetary properties presented here will facilitate follow-up investigations of both individual TOIs and broader trends in planet properties, system dynamics, and the evolution of planetary systems.",
"doi": "10.3847/1538-3881/acd557",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-07",
"series_number": "1",
"volume": "166",
"issue": "1",
"pages": "Art. No. 33"
},
{
"id": "authors:t4x97-h0n73",
"collection": "authors",
"collection_id": "t4x97-h0n73",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230420-614177700.3",
"type": "article",
"title": "Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions",
"author": [
{
"family_name": "Laliotis",
"given_name": "Katherine",
"orcid": "0000-0002-6111-6061",
"clpid": "Laliotis-Katherine"
},
{
"family_name": "Burt",
"given_name": "Jennifer A.",
"orcid": "0000-0002-0040-6815",
"clpid": "Burt-Jennifer-A"
},
{
"family_name": "Mamajek",
"given_name": "Eric E.",
"orcid": "0000-0003-2008-1488",
"clpid": "Mamajek-Eric-E"
},
{
"family_name": "Li",
"given_name": "Zhexing",
"orcid": "0000-0002-4860-7667",
"clpid": "Li-Zhexing"
},
{
"family_name": "Perdelwitz",
"given_name": "Volker",
"orcid": "0000-0002-6859-0882",
"clpid": "Perdelwitz-Volker"
},
{
"family_name": "Zhao",
"given_name": "Jinglin",
"orcid": "0000-0001-5290-2952",
"clpid": "Zhao-Jinglin"
},
{
"family_name": "Butler",
"given_name": "R. Paul",
"orcid": "0000-0003-1305-3761",
"clpid": "Butler-R-Paul"
},
{
"family_name": "Holden",
"given_name": "Bradford",
"orcid": "0000-0002-6153-3076",
"clpid": "Holden-Bradford-P"
},
{
"family_name": "Rosenthal",
"given_name": "Lee",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Fulton",
"given_name": "B. J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Feng",
"given_name": "Fabo",
"orcid": "0000-0001-6039-0555",
"clpid": "Feng-Fabo"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Bailey",
"given_name": "Jeremy",
"orcid": "0000-0002-5726-7000",
"clpid": "Bailet-Jeremy"
},
{
"family_name": "Carter",
"given_name": "Brad",
"orcid": "0000-0003-0035-8769",
"clpid": "Carter-Brad"
},
{
"family_name": "Crane",
"given_name": "Jeffrey D.",
"orcid": "0000-0002-5226-787X",
"clpid": "Crane-Jeffrey-D"
},
{
"family_name": "Furlan",
"given_name": "Elise",
"orcid": "0000-0001-9800-6248",
"clpid": "Furlan-Elise"
},
{
"family_name": "Gnilka",
"given_name": "Crystal L.",
"orcid": "0000-0003-2519-6161",
"clpid": "Gnilka-Crystal-L"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853",
"clpid": "Howell-Steve-B"
},
{
"family_name": "Laughlin",
"given_name": "Gregory",
"orcid": "0000-0002-3253-2621",
"clpid": "Laughlin-Gregory-P"
},
{
"family_name": "Shectman",
"given_name": "Stephen A.",
"orcid": "0000-0002-8681-6136",
"clpid": "Shectman-Stephen-A"
},
{
"family_name": "Teske",
"given_name": "Johanna K.",
"clpid": "Teske-Johanna-K"
},
{
"family_name": "Tinney",
"given_name": "C. G.",
"orcid": "0000-0002-7595-0970",
"clpid": "Tinney-C-G"
},
{
"family_name": "Vogt",
"given_name": "Steven S.",
"orcid": "0000-0001-7177-7456",
"clpid": "Vogt-Steven-S"
},
{
"family_name": "Wang",
"given_name": "Sharon Xuesong",
"orcid": "0000-0002-6937-9034",
"clpid": "Wang-Sharon-Xuesong"
},
{
"family_name": "Wittenmyer",
"given_name": "Robert A.",
"orcid": "0000-0001-9957-9304",
"clpid": "Wittenmyer-Robert-A"
}
],
"abstract": "Directly imaging temperate rocky planets orbiting nearby, Sun-like stars with a 6 m class IR/O/UV space telescope, recently dubbed the Habitable Worlds Observatory, is a high-priority goal of the Astro2020 Decadal Survey. To prepare for future direct imaging (DI) surveys, the list of potential targets should be thoroughly vetted to maximize efficiency and scientific yield. We present an analysis of archival radial velocity data for southern stars from the NASA/NSF Extreme Precision Radial Velocity (EPRV) Working Group's list of high-priority target stars for future DI missions (drawn from the HabEx, LUVOIR, and Starshade Rendezvous studies). For each star, we constrain the region of companion mass and period parameter space we are already sensitive to based on the observational baseline, sampling, and precision of the archival radial velocity (RV) data. Additionally, for some of the targets, we report new estimates of magnetic activity cycle periods, rotation periods, improved orbital parameters for previously known exoplanets, and new candidate planet signals that require further vetting or observations to confirm. Our results show that for many of these stars we are not yet sensitive to even Saturn-mass planets in the habitable zone, let alone smaller planets, highlighting the need for future EPRV vetting efforts before the launch of a DI mission. We present evidence that the candidate temperate super-Earth exoplanet HD 85512b is most likely due to the star's rotation, and report an RV acceleration for \u03b4 Pav that supports the existence of a distant giant planet previously inferred from astrometry.",
"doi": "10.3847/1538-3881/acc067",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-04",
"series_number": "4",
"volume": "165",
"issue": "4",
"pages": "Art. No. 176"
},
{
"id": "authors:p7ye1-w6627",
"collection": "authors",
"collection_id": "p7ye1-w6627",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230404-258305700.12",
"type": "article",
"title": "First Observations of the Brown Dwarf HD 19467 B with JWST",
"author": [
{
"family_name": "Greenbaum",
"given_name": "Alexandra Z.",
"orcid": "0000-0002-7162-8036",
"clpid": "Greenbaum-Alexandra-Z"
},
{
"family_name": "Llop-Sayson",
"given_name": "Jorge",
"orcid": "0000-0002-3414-784X",
"clpid": "Llop-Sayson-Jorge-D"
},
{
"family_name": "Lew",
"given_name": "Ben W. P.",
"orcid": "0000-0003-1487-6452",
"clpid": "Lew-Ben-W-P"
},
{
"family_name": "Bryden",
"given_name": "Geoffrey",
"orcid": "0000-0001-5966-837X",
"clpid": "Bryden-Geoffrey-B"
},
{
"family_name": "Roellig",
"given_name": "Thomas L.",
"orcid": "0000-0002-6730-5410",
"clpid": "Roellig-Thomas-L"
},
{
"family_name": "Ygouf",
"given_name": "Marie",
"orcid": "0000-0001-7591-2731",
"clpid": "Ygouf-Marie"
},
{
"family_name": "Fulton",
"given_name": "B. J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Hey",
"given_name": "Daniel R.",
"orcid": "0000-0003-3244-5357",
"clpid": "Hey-Daniel-R"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488",
"clpid": "Huber-Daniel"
},
{
"family_name": "Mukherjee",
"given_name": "Sagnick",
"orcid": "0000-0003-1622-1302",
"clpid": "Mukherjee-Sagnick"
},
{
"family_name": "Meyer",
"given_name": "Michael",
"orcid": "0000-0003-1227-3084",
"clpid": "Meyer-Michael-R"
},
{
"family_name": "Leisenring",
"given_name": "Jarron",
"orcid": "0000-0002-0834-6140",
"clpid": "Leisenring-Jarron-M"
},
{
"family_name": "Rieke",
"given_name": "Marcia",
"orcid": "0000-0002-7893-6170",
"clpid": "Rieke-Marcia-J"
},
{
"family_name": "Boyer",
"given_name": "Martha",
"orcid": "0000-0003-4850-9589",
"clpid": "Boyer-Martha-L"
},
{
"family_name": "Green",
"given_name": "Joseph J.",
"clpid": "Green-Joseph-J"
},
{
"family_name": "Kelly",
"given_name": "Doug",
"clpid": "Kelly-Douglas-M"
},
{
"family_name": "Misselt",
"given_name": "Karl",
"clpid": "Misselt-Karl-A"
},
{
"family_name": "Serabyn",
"given_name": "Eugene",
"clpid": "Serabyn-Eugene"
},
{
"family_name": "Stansberry",
"given_name": "John",
"orcid": "0000-0003-2434-5225",
"clpid": "Stansberry-John-A"
},
{
"family_name": "Chu",
"given_name": "Laurie E. U.",
"orcid": "0000-0002-1437-4463",
"clpid": "Chu-Laurie-E-U"
},
{
"family_name": "De Furio",
"given_name": "Matthew",
"orcid": "0000-0003-1863-4960",
"clpid": "De-Furio-Matthew"
},
{
"family_name": "Johnstone",
"given_name": "Doug",
"orcid": "0000-0002-6773-459X",
"clpid": "Johnstone-Doug"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062",
"clpid": "Schlieder-Joshua-E"
},
{
"family_name": "Beichman",
"given_name": "Charles",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
}
],
"abstract": "We observed HD 19467 B with JWST's NIRCam in six filters spanning 2.5\u20134.6 \u03bcm with the long-wavelength bar coronagraph. The brown dwarf HD 19467 B was initially identified through a long-period trend in the radial velocity of the G3V star HD 19467. HD 19467 B was subsequently detected via coronagraphic imaging and spectroscopy, and characterized as a late-T type brown dwarf with an approximate temperature \u223c1000 K. We observed HD 19467 B as a part of the NIRCam GTO science program, demonstrating the first use of the NIRCam Long Wavelength Bar coronagraphic mask. The object was detected in all six filters (contrast levels of 2 \u00d7 10\u207b\u2074 to 2 \u00d7 10\u207b\u2075) at a separation of 1.\u20336 using angular differential imaging and synthetic reference differential imaging. Due to a guide star failure during the acquisition of a preselected reference star, no reference star data were available for post-processing. However, reference differential imaging was successfully applied using synthetic point-spread functions developed from contemporaneous maps of the telescope's optical configuration. Additional radial velocity data (from Keck/HIRES) are used to constrain the orbit of HD 19467 B. Photometric data from TESS are used to constrain the properties of the host star, particularly its age. NIRCam photometry, spectra, and photometry from the literature, and improved stellar parameters are used in conjunction with recent spectral and evolutionary substellar models to derive the physical properties of HD 19467 B. Using an age of 9.4 \u00b1 0.9 Gyr inferred from spectroscopy, Gaia astrometry, and TESS asteroseismology, we obtain a model-derived mass of 62 \u00b1 1 M_J, which is consistent within 2\u03c3 with the dynamically derived mass of 81\u208b\u2081\u2082\u207a\u00b9\u2074 M_J.",
"doi": "10.3847/1538-4357/acb68b",
"issn": "0004-637X",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal",
"publication_date": "2023-03-10",
"series_number": "2",
"volume": "945",
"issue": "2",
"pages": "Art. No. 126"
},
{
"id": "authors:a7mj9-02s41",
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"collection_id": "a7mj9-02s41",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230314-846094500.70",
"type": "article",
"title": "TOI-561 b: A Low-density Ultra-short-period \"Rocky\" Planet around a Metal-poor Star",
"author": [
{
"family_name": "Brinkman",
"given_name": "Casey L.",
"orcid": "0000-0002-4480-310X",
"clpid": "Brinkman-Casey-L"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488",
"clpid": "Huber-Daniel"
},
{
"family_name": "Kite",
"given_name": "Edwin S.",
"orcid": "0000-0002-1426-1186",
"clpid": "Kite-Edwin-S"
},
{
"family_name": "Valencia",
"given_name": "Diana",
"orcid": "0000-0003-3993-4030",
"clpid": "Valencia-Diana"
},
{
"family_name": "Bean",
"given_name": "Jacob L.",
"orcid": "0000-0003-4733-6532",
"clpid": "Bean-Jacob-L"
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{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364",
"clpid": "Beard-Corey"
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{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
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{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
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{
"family_name": "Brady",
"given_name": "Madison",
"orcid": "0000-0003-2404-2427",
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{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
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{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
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{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
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{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
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{
"family_name": "Kasper",
"given_name": "David",
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{
"family_name": "Lubin",
"given_name": "Jack",
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{
"family_name": "MacDougall",
"given_name": "Mason",
"orcid": "0000-0003-2562-9043",
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{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284",
"clpid": "Akana-Murphy-Joseph-M"
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{
"family_name": "Plotnykov",
"given_name": "Mykhaylo",
"orcid": "0000-0002-9479-2744",
"clpid": "Plotnykov-Mykhaylo"
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{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681",
"clpid": "Polanski-Alex-S"
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{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X",
"clpid": "Rice-Malena"
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{
"family_name": "Seifahrt",
"given_name": "Andreas",
"orcid": "0000-0003-4526-3747",
"clpid": "Seifahrt-Andreas"
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{
"family_name": "Stef\u00e1nsson",
"given_name": "Gu\u00f0mundur",
"orcid": "0000-0001-7409-5688",
"clpid": "Stef\u00e1nsson-Gu\u00f0mundur"
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{
"family_name": "St\u00fcrmer",
"given_name": "Julian",
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],
"abstract": "TOI-561 is a galactic thick-disk star hosting an ultra-short-period (0.45-day-orbit) planet with a radius of 1.37 R_\u2295, making it one of the most metal-poor ([Fe/H] = \u22120.41) and oldest (\u224810 Gyr) sites where an Earth-sized planet has been found. We present new simultaneous radial velocity (RV) measurements from Gemini-N/MAROON-X and Keck/HIRES, which we combined with literature RVs to derive a mass of M_ = 2.24 \u00b1 0.20 M_\u2295. We also used two new sectors of TESS photometry to improve the radius determination, finding R_b = 1.37 \u00b1 0.04 R_\u2295 and confirming that TOI-561 b is one of the lowest-density super-Earths measured to date (\u03c1_b = 4.8 \u00b1 0.5 g cm\u207b\u00b3). This density is consistent with an iron-poor rocky composition reflective of the host star's iron and rock-building element abundances; however, it is also consistent with a low-density planet with a volatile envelope. The equilibrium temperature of the planet (\u223c2300 K) suggests that this envelope would likely be composed of high mean molecular weight species, such as water vapor, carbon dioxide, or silicate vapor, and is likely not primordial. We also demonstrate that the composition determination is sensitive to the choice of stellar parameters and that further measurements are needed to determine whether TOI-561 b is a bare rocky planet, a rocky planet with an optically thin atmosphere, or a rare example of a nonprimordial envelope on a planet with a radius smaller than 1.5 R_\u2295.",
"doi": "10.3847/1538-3881/acad83",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-03",
"series_number": "3",
"volume": "165",
"issue": "3",
"pages": "Art. No. 88"
},
{
"id": "authors:trvfa-ewn07",
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"collection_id": "trvfa-ewn07",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230314-844891400.15",
"type": "article",
"title": "Detecting Exomoons from Radial Velocity Measurements of Self-luminous Planets: Application to Observations of HR 7672 B and Future Prospects",
"author": [
{
"family_name": "Ruffio",
"given_name": "Jean-Baptiste",
"orcid": "0000-0003-2233-4821",
"clpid": "Ruffio-Jean-Baptiste"
},
{
"family_name": "Horstman",
"given_name": "Katelyn",
"orcid": "0000-0001-9708-8667",
"clpid": "Horstman-Katelyn"
},
{
"family_name": "Mawet",
"given_name": "Dimitri",
"orcid": "0000-0002-8895-4735",
"clpid": "Mawet-D"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Batygin",
"given_name": "Konstantin",
"orcid": "0000-0002-7094-7908",
"clpid": "Batygin-K"
},
{
"family_name": "Wang",
"given_name": "Jason J.",
"orcid": "0000-0003-0774-6502"
},
{
"family_name": "Millar-Blanchaer",
"given_name": "Maxwell",
"orcid": "0000-0001-6205-9233"
},
{
"family_name": "Wang",
"given_name": "Ji",
"orcid": "0000-0002-4361-8885"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Konopacky",
"given_name": "Quinn M.",
"orcid": "0000-0002-9936-6285"
},
{
"family_name": "Agrawal",
"given_name": "Shubh",
"orcid": "0000-0003-2429-5811",
"clpid": "Agrawal-Shubh"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Nielsen",
"given_name": "Eric",
"orcid": "0000-0001-6975-9056"
},
{
"family_name": "Baker",
"given_name": "Ashley",
"orcid": "0000-0002-6525-7013",
"clpid": "Baker-Ashley-D"
},
{
"family_name": "Bartos",
"given_name": "Randall",
"clpid": "Bartos-Randall-D"
},
{
"family_name": "Bond",
"given_name": "Charlotte Z."
},
{
"family_name": "Calvin",
"given_name": "Benjamin",
"orcid": "0000-0003-4737-5486",
"clpid": "Calvin-Benjamin-A"
},
{
"family_name": "Cetre",
"given_name": "Sylvain"
},
{
"family_name": "Delorme",
"given_name": "Jacques-Robert",
"orcid": "0000-0001-8953-1008",
"clpid": "Delorme-Jacques-Robert"
},
{
"family_name": "Doppmann",
"given_name": "Greg"
},
{
"family_name": "Echeverri",
"given_name": "Daniel",
"orcid": "0000-0002-1583-2040",
"clpid": "Echeverri-Daniel"
},
{
"family_name": "Finnerty",
"given_name": "Luke",
"orcid": "0000-0002-1392-0768"
},
{
"family_name": "Fitzgerald",
"given_name": "Michael P.",
"orcid": "0000-0002-0176-8973"
},
{
"family_name": "Jovanovic",
"given_name": "Nemanja",
"orcid": "0000-0001-5213-6207",
"clpid": "Jovanovic-Nemanja"
},
{
"family_name": "L\u00f3pez",
"given_name": "Ronald"
},
{
"family_name": "Martin",
"given_name": "Emily C.",
"orcid": "0000-0002-0618-5128"
},
{
"family_name": "Morris",
"given_name": "Evan"
},
{
"family_name": "Pezzato",
"given_name": "Jacklyn",
"orcid": "0000-0002-6769-2035",
"clpid": "Pezzato-Jacklyn"
},
{
"family_name": "Ruane",
"given_name": "Garreth",
"orcid": "0000-0003-4769-1665",
"clpid": "Ruane-Garreth-J"
},
{
"family_name": "Sappey",
"given_name": "Ben",
"orcid": "0000-0003-1399-3593"
},
{
"family_name": "Schofield",
"given_name": "Tobias",
"clpid": "Schofield-Tobias"
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{
"family_name": "Skemer",
"given_name": "Andrew",
"orcid": "0000-0001-6098-3924"
},
{
"family_name": "Venenciano",
"given_name": "Taylor",
"orcid": "0000-0003-0122-8915"
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{
"family_name": "Wallace",
"given_name": "J. Kent",
"orcid": "0000-0001-5299-6899",
"clpid": "Wallace-J-Kent"
},
{
"family_name": "Wallack",
"given_name": "Nicole L.",
"orcid": "0000-0003-0354-0187"
},
{
"family_name": "Wizinowich",
"given_name": "Peter",
"orcid": "0000-0002-1646-442X"
},
{
"family_name": "Xuan",
"given_name": "Jerry W.",
"orcid": "0000-0002-6618-1137",
"clpid": "Xuan-Jerry-W"
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],
"abstract": "The detection of satellites around extrasolar planets, so called exomoons, remains a largely unexplored territory. In this work, we study the potential of detecting these elusive objects from radial velocity monitoring of self-luminous, directly imaged planets. This technique is now possible thanks to the development of dedicated instruments combining the power of high-resolution spectroscopy and high-contrast imaging. First, we demonstrate a sensitivity to satellites with a mass ratio of 1%\u20134% at separations similar to the Galilean moons from observations of a brown-dwarf companion (HR 7672 B; K_(mag) = 13; 0.\u20337 separation) with the Keck Planet Imager and Characterizer (R \u223c 35,000 in the K band) at the W. M. Keck Observatory. Current instrumentation is therefore already sensitive to large unresolved satellites that could be forming from gravitational instability akin to binary star formation. Using end-to-end simulations, we then estimate that future instruments such as the Multi-Object Diffraction-limited High-resolution Infrared Spectrograph, planned for the Thirty Meter Telescope, should be sensitive to satellites with mass ratios of \u223c10\u22124. Such small moons would likely form in a circumplanetary disk similar to the Jovian satellites in the solar system. Looking for the Rossiter\u2013McLaughlin effect could also be an interesting pathway to detecting the smallest moons on short orbital periods. Future exomoon discoveries will allow precise mass measurements of the substellar companions that they orbit and provide key insight into the formation of exoplanets. They would also help constrain the population of habitable Earth-sized moons orbiting gas giants in the habitable zone of their stars.",
"doi": "10.3847/1538-3881/acb34a",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-03",
"series_number": "3",
"volume": "165",
"issue": "3",
"pages": "Art. No. 113"
},
{
"id": "authors:t7qm7-qr209",
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"collection_id": "t7qm7-qr209",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230307-205876300.27",
"type": "article",
"title": "TOI-1136 is a Young, Coplanar, Aligned Planetary System in a Pristine Resonant Chain",
"author": [
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
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{
"family_name": "Masuda",
"given_name": "Kento",
"orcid": "0000-0003-1298-9699"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
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{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
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{
"family_name": "Goldberg",
"given_name": "Max",
"orcid": "0000-0003-3868-3663",
"clpid": "Goldberg-Max"
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{
"family_name": "Batygin",
"given_name": "Konstantin",
"orcid": "0000-0002-7094-7908",
"clpid": "Batygin-K"
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{
"family_name": "Bouma",
"given_name": "Luke",
"orcid": "0000-0002-0514-5538",
"clpid": "Bouma-Luke-G"
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{
"family_name": "Lissauer",
"given_name": "Jack J.",
"orcid": "0000-0001-6513-1659"
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{
"family_name": "Knudstrup",
"given_name": "Emil",
"orcid": "0000-0001-7880-594X"
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{
"family_name": "Albrecht",
"given_name": "Simon",
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{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
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{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
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{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
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{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
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{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
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{
"family_name": "Kristiansen",
"given_name": "Martti Holst",
"orcid": "0000-0002-2607-138X"
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{
"family_name": "Osborn",
"given_name": "Hugh",
"orcid": "0000-0002-4047-4724"
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{
"family_name": "Wang",
"given_name": "Songhu",
"orcid": "0000-0002-7846-6981"
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{
"family_name": "Wang",
"given_name": "Xian-Yu",
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{
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{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
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{
"family_name": "Brinkman",
"given_name": "Casey L.",
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"family_name": "Crossfield",
"given_name": "Ian J. M.",
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"family_name": "Dressing",
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"family_name": "Hill",
"given_name": "Michelle L.",
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"family_name": "Huber",
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"family_name": "Kane",
"given_name": "Stephen R.",
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"family_name": "Van Zandt",
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{
"family_name": "Polanski",
"given_name": "Alex S.",
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{
"family_name": "Schwengeler",
"given_name": "Hans Martin",
"orcid": "0000-0002-1637-2189"
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{
"family_name": "Terentev",
"given_name": "Ivan A.",
"orcid": "0000-0002-0654-4442"
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{
"family_name": "Benni",
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{
"family_name": "Bieryla",
"given_name": "Allyson",
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{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
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{
"family_name": "Falk",
"given_name": "Ben"
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{
"family_name": "Furlan",
"given_name": "E.",
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{
"family_name": "Girardin",
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{
"family_name": "Guerra",
"given_name": "Pere",
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{
"family_name": "Hesse",
"given_name": "Katharine M.",
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{
"family_name": "Howell",
"given_name": "Steve B.",
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{
"family_name": "Lillo-Box",
"given_name": "J.",
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{
"family_name": "Matthews",
"given_name": "Elisabeth C.",
"orcid": "0000-0003-0593-1560"
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
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{
"family_name": "Villase\u00f1or",
"given_name": "Joel"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
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{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
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{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
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{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "Convergent disk migration has long been suspected to be responsible for forming planetary systems with a chain of mean-motion resonances (MMRs). Dynamical evolution over time could disrupt the delicate resonant configuration. We present TOI-1136, a 700 \u00b1 150 Myr old G star hosting at least six transiting planets between \u223c2 and 5 R_\u2295. The orbital period ratios deviate from exact commensurability by only 10\u207b\u2074, smaller than the \u223c10\u207b\u00b2 deviations seen in typical Kepler near-resonant systems. A transit-timing analysis measured the masses of the planets (3\u20138 M_\u2295) and demonstrated that the planets in TOI-1136 are in true resonances with librating resonant angles. Based on a Rossiter\u2013McLaughlin measurement of planet d, the star's rotation appears to be aligned with the planetary orbital planes. The well-aligned planetary system and the lack of a detected binary companion together suggest that TOI-1136's resonant chain formed in an isolated, quiescent disk with no stellar flyby, disk warp, or significant axial asymmetry. With period ratios near 3:2, 2:1, 3:2, 7:5, and 3:2, TOI-1136 is the first known resonant chain involving a second-order MMR (7:5) between two first-order MMRs. The formation of the delicate 7:5 resonance places strong constraints on the system's migration history. Short-scale (starting from \u223c0.1 au) Type-I migration with an inner disk edge is most consistent with the formation of TOI-1136. A low disk surface density (\u03a3_(1 au) \u2272 10\u00b3 g cm\u207b\u00b2; lower than the minimum-mass solar nebula) and the resultant slower migration rate likely facilitated the formation of the 7:5 second-order MMR.",
"doi": "10.3847/1538-3881/aca327",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-02",
"series_number": "2",
"volume": "165",
"issue": "2",
"pages": "Art. No. 33"
},
{
"id": "authors:dvbtw-k3y67",
"collection": "authors",
"collection_id": "dvbtw-k3y67",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230221-19480300.44",
"type": "article",
"title": "TESS-Keck Survey. XIV. Two Giant Exoplanets from the Distant Giants Survey",
"author": [
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826",
"clpid": "Van-Zandt-Judah"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "MacDougall",
"given_name": "Mason",
"orcid": "0000-0003-2562-9043",
"clpid": "MacDougall-Mason-G"
},
{
"family_name": "Gilbert",
"given_name": "Gregory J.",
"orcid": "0000-0003-0742-1660",
"clpid": "Gilbert-Gregory J."
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736",
"clpid": "Lubin-Jack"
},
{
"family_name": "Barclay",
"given_name": "Thomas",
"orcid": "0000-0001-7139-2724",
"clpid": "Barclay-Thomas"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519",
"clpid": "Batalha-Natalie-M"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233",
"clpid": "Dressing-Courtney-D"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488",
"clpid": "Huber-Daniel"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678",
"clpid": "Robertson-Paul-M"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775",
"clpid": "Roy-Arpita"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364",
"clpid": "Beard-Corey"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Fetherolf",
"given_name": "Tara",
"orcid": "0000-0002-3551-279X",
"clpid": "Fetherolf-Tara"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven-A"
},
{
"family_name": "Henze",
"given_name": "Christopher E.",
"orcid": "0000-0003-3216-0626",
"clpid": "Henze-Christopher-E"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756",
"clpid": "Hill-Michelle-L"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443",
"clpid": "Hirsch-Lea-A"
},
{
"family_name": "Holcomb",
"given_name": "Rae",
"orcid": "0000-0002-5034-9476",
"clpid": "Holcomb-Rae"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853",
"clpid": "Howell-Steve-B"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460",
"clpid": "Jenkins-Jon-M"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388",
"clpid": "Latham-David-W"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135",
"clpid": "Mayo-Andrew-W"
},
{
"family_name": "Mireles",
"given_name": "Ismael",
"orcid": "0000-0002-4510-2268",
"clpid": "Mireles-Ismael"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X",
"clpid": "Mo\u010dnik-Teo"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284",
"clpid": "Murphy-Joseph-M-Akana"
},
{
"family_name": "Pidhorodetska",
"given_name": "Daria",
"orcid": "0000-0001-9771-7953",
"clpid": "Pidhorodetska-Daria"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681",
"clpid": "Polanski-Alex-S"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662",
"clpid": "Ricker-George-R"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948",
"clpid": "Seager-Sara"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280",
"clpid": "Scarsdale-Nicholas"
},
{
"family_name": "Turtelboom",
"given_name": "Emma V.",
"orcid": "0000-0002-1845-2617",
"clpid": "Turtelboom-Emma-V"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562",
"clpid": "Vanderspek-Roland"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X",
"clpid": "Winn-Joshua-N"
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],
"abstract": "We present the Distant Giants Survey, a three-year radial velocity campaign to measure P(DG|CS), the conditional\noccurrence of distant giant planets (DG; M_p \u223c 0.3\u201313 M_J, P > 1 yr) in systems hosting a close-in small planet (CS;\nR_p < 10 R_\u2295). For the past two years, we have monitored 47 Sun-like stars hosting small transiting planets detected by TESS. We present the selection criteria used to assemble our sample and report the discovery of two distant giant\nplanets, TOI-1669 b and TOI-1694 c. For TOI-1669 b we find that M sin i = 0.573 \u00b1 0.074 M_J, P = 502 \u00b1 16 days,\nand e < 0.27, while for TOI-1694 c, M sin i = 1.05 \u00b1 0.05 M_J, P = 389.2 \u00b1 3.9 days, and e = 0.18 \u00b1 0.05. We also\nconfirmed the 3.8 days transiting planet TOI-1694 b by measuring a true mass of M = 26.1 \u00b1 2.2 M_\u2295. At the end of the Distant Giants Survey, we will incorporate TOI-1669 b and TOI-1694 c into our calculation of P(DG|CS), a crucial\nstatistic for understanding the relationship between outer giants and small inner companions.",
"doi": "10.3847/1538-3881/aca6ef",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-02",
"series_number": "2",
"volume": "165",
"issue": "2",
"pages": "Art. No. 60"
},
{
"id": "authors:jq075-zep81",
"collection": "authors",
"collection_id": "jq075-zep81",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20230314-845495900.68",
"type": "article",
"title": "TOI 560: Two Transiting Planets Orbiting a K Dwarf Validated with iSHELL, PFS, and HIRES RVs",
"author": [
{
"family_name": "El Mufti",
"given_name": "Mohammed",
"orcid": "0000-0001-8364-2903",
"clpid": "El-Mufti-Mohammed"
},
{
"family_name": "Plavchan",
"given_name": "Peter P.",
"orcid": "0000-0002-8864-1667"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Cale",
"given_name": "Bryson L.",
"orcid": "0000-0001-6279-0595",
"clpid": "Cale-Bryson-L"
},
{
"family_name": "Feliz",
"given_name": "Dax L.",
"orcid": "0000-0002-2457-7889"
},
{
"family_name": "Reefe",
"given_name": "Michael A.",
"orcid": "0000-0003-4701-8497"
},
{
"family_name": "Hellier",
"given_name": "Coel",
"orcid": "0000-0002-3439-1439"
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{
"family_name": "Stassun",
"given_name": "Keivan",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Eastman",
"given_name": "Jason",
"orcid": "0000-0003-3773-5142"
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{
"family_name": "Polanski",
"given_name": "Alex",
"orcid": "0000-0001-7047-8681"
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{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Gaidos",
"given_name": "Eric",
"orcid": "0000-0002-5258-6846"
},
{
"family_name": "Kostov",
"given_name": "Veselin",
"orcid": "0000-0001-9786-1031"
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{
"family_name": "Wittrock",
"given_name": "Justin M.",
"orcid": "0000-0002-7424-9891"
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"given_name": "Joel"
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{
"family_name": "Schlieder",
"given_name": "Joshua E.",
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{
"family_name": "Bouma",
"given_name": "Luke G.",
"orcid": "0000-0002-0514-5538"
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{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
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{
"family_name": "Zohrabi",
"given_name": "Farzaneh",
"orcid": "0000-0003-2872-9883"
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{
"family_name": "Lee",
"given_name": "Rena A.",
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{
"family_name": "Sohani",
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"family_name": "Berberian",
"given_name": "John",
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{
"family_name": "Vermilion",
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"family_name": "Newman",
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{
"family_name": "Geneser",
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{
"family_name": "Tanner",
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"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
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{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
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{
"family_name": "Howard",
"given_name": "Andrew W.",
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{
"family_name": "Kane",
"given_name": "Stephen R.",
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"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
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"family_name": "Weiss",
"given_name": "Lauren M.",
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"family_name": "Hill",
"given_name": "Michelle L.",
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"family_name": "Akana Murphy",
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"given_name": "Ryan A.",
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"family_name": "Gnilka",
"given_name": "Crystal L.",
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"given_name": "Steve B.",
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{
"family_name": "Mann",
"given_name": "Andrew W.",
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{
"family_name": "Rabus",
"given_name": "Markus",
"orcid": "0000-0003-2935-7196"
},
{
"family_name": "Johnson",
"given_name": "Marshall C.",
"orcid": "0000-0002-5099-8185"
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{
"family_name": "Christiansen",
"given_name": "Jessie",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
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{
"family_name": "Kreidberg",
"given_name": "Laura",
"orcid": "0000-0003-0514-1147"
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{
"family_name": "Berardo",
"given_name": "David Anthony",
"orcid": "0000-0001-6298-412X"
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{
"family_name": "Deming",
"given_name": "Drake",
"orcid": "0000-0001-5727-4094"
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{
"family_name": "Gorjian",
"given_name": "Varoujan",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
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{
"family_name": "Morales",
"given_name": "Farisa Y.",
"orcid": "0000-0001-9414-3851",
"clpid": "Morales-Farisa-Y"
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{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498"
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{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Wittenmyer",
"given_name": "Robert A.",
"orcid": "0000-0001-9957-9304"
},
{
"family_name": "Ballard",
"given_name": "Sarah",
"orcid": "0000-0002-3247-5081"
},
{
"family_name": "Bowler",
"given_name": "Brendan P.",
"orcid": "0000-0003-2649-2288"
},
{
"family_name": "Horner",
"given_name": "Jonathan",
"orcid": "0000-0002-1160-7970"
},
{
"family_name": "Kielkopf",
"given_name": "John",
"orcid": "0000-0003-0497-2651"
},
{
"family_name": "Liu",
"given_name": "Huigen",
"orcid": "0000-0001-5162-1753"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Tinney",
"given_name": "C. G.",
"orcid": "0000-0002-7595-0970"
},
{
"family_name": "Zhang",
"given_name": "Hui",
"orcid": "0000-0003-3491-6394"
},
{
"family_name": "Wright",
"given_name": "Duncan J.",
"orcid": "0000-0001-7294-5386"
},
{
"family_name": "Addison",
"given_name": "Brett C.",
"orcid": "0000-0003-3216-0626"
},
{
"family_name": "Mengel",
"given_name": "Matthew W.",
"orcid": "0000-0002-7830-6822"
},
{
"family_name": "Okumura",
"given_name": "Jack",
"orcid": "0000-0002-4876-8540"
}
],
"abstract": "We validate the presence of a two-planet system orbiting the 0.15\u20131.4 Gyr K4 dwarf TOI 560 (HD 73583). The system consists of an inner moderately eccentric transiting mini-Neptune (TOI 560 b, P = 6.3980661_(\u22120.0000097)^(+0.0000095) days, e = 0.294_(\u22120.062)^(+0.13), M = 0.94_(-0.23)^(+0.31)M_(Nep) initially discovered in the Sector 8 Transiting Exoplanet Survey Satellite (TESS) mission observations, and a transiting mini-Neptune (TOI 560 c, P = 18.8805_(\u22120.0011)^(+0.0024) days, M = 1.32_(\u22120.32)^(+0.29)M_(Nep) discovered in the Sector 34 observations, in a rare near-1:3 orbital resonance. We utilize photometric data from TESS Spitzer, and ground-based follow-up observations to confirm the ephemerides and period of the transiting planets, vet false-positive scenarios, and detect the photoeccentric effect for TOI 560 b. We obtain follow-up spectroscopy and corresponding precise radial velocities (RVs) with the iSHELL spectrograph at the NASA Infrared Telescope Facility and the HIRES Spectrograph at Keck Observatory to validate the planetary nature of these signals, which we combine with published Planet Finder Spectrograph RVs from the Magellan Observatory. We detect the masses of both planets at >3\u03c3 significance. We apply a Gaussian process (GP) model to the TESS light curves to place priors on a chromatic RV GP model to constrain the stellar activity of the TOI 560 host star, and confirm a strong wavelength dependence for the stellar activity demonstrating the ability of near-IR RVs to mitigate stellar activity for young K dwarfs. TOI 560 is a nearby moderately young multiplanet system with two planets suitable for atmospheric characterization with the James Webb Space Telescope and other upcoming missions. In particular, it will undergo six transit pairs separated by <6 hr before 2027 June.",
"doi": "10.3847/1538-3881/ac9834",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-01",
"series_number": "1",
"volume": "165",
"issue": "1",
"pages": "10"
},
{
"id": "authors:jmpp5-wd791",
"collection": "authors",
"collection_id": "jmpp5-wd791",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20221031-575177800.21",
"type": "article",
"title": "High-resolution ALMA and HST imaging of \u03baCrB: a broad debris disc around a post-main-sequence star with low-mass companions",
"author": [
{
"family_name": "Lovell",
"given_name": "J. B.",
"orcid": "0000-0002-4248-5443",
"clpid": "Lovell-Joshua-Bennett"
},
{
"family_name": "Wyatt",
"given_name": "M. C.",
"orcid": "0000-0001-9064-5598",
"clpid": "Wyatt-Mark-C"
},
{
"family_name": "Kalas",
"given_name": "P.",
"orcid": "0000-0002-6221-5360",
"clpid": "Kalas-Paul"
},
{
"family_name": "Kennedy",
"given_name": "G. M.",
"orcid": "0000-0001-6831-7547",
"clpid": "Kennedy-Grant-M"
},
{
"family_name": "Marino",
"given_name": "S.",
"orcid": "0000-0002-5352-2924",
"clpid": "Marino-Sebasti\u00e1n"
},
{
"family_name": "Bonsor",
"given_name": "A.",
"orcid": "0000-0002-8070-1901",
"clpid": "Bonsor-Amy"
},
{
"family_name": "Penoyre",
"given_name": "Z.",
"orcid": "0000-0003-0244-4919",
"clpid": "Penoyre-Zephyr"
},
{
"family_name": "Fulton",
"given_name": "B. J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Pawellek",
"given_name": "N.",
"orcid": "0000-0002-9385-9820",
"clpid": "Pawellek-Nicole"
}
],
"abstract": "\u03baCrB is an \u223c2.5\u2009Gyr old K1 sub-giant star, with an eccentric exo-Jupiter at \u223c2.8\u2009au and a debris disc at tens of au. We present ALMA (Atacama Large Millimetre/submillimetre Array) Band 6 (1.3\u2009mm) and Hubble Space Telescope scattered light (0.6\u03bcm) images, demonstrating \u03baCrB's broad debris disc, covering an extent 50\u2212180au in the millimetre (peaking at 110\u2009au), and 51\u2212280 au in scattered light (peaking at 73\u2009au). By modelling the millimetre emission, we estimate the dust mass as \u223c0.016 M_\u2295\u2060, and constrain lower-limit planetesimal sizes as D_(max) \u2273 1 km and the planetesimal belt mass as M_(disc) \u2273 1 M_\u2295\u2060. We constrain the properties of an outer body causing a linear trend in 17\u2009yr of radial velocity data to have a semimajor axis 8\u201366\u2009au and a mass 0.4\u2212120 M_(Jup)\u2060. There is a large inner cavity seen in the millimetre emission, which we show is consistent with carving by such an outer massive companion with a string of lower mass planets. Our scattered light modelling shows that the dust must have a high anisotropic scattering factor (g \u223c 0.8\u20130.9) but an inclination (i \u223c 30\u00b0\u201340\u00b0) that is inferred to be significantly lower than the i \u223c 61\u00b0 millimetre inclination. The origin of such a discrepancy is unclear, but could be caused by a misalignment in the micrometre- and millimetre-sized dust. We place an upper limit on the CO gas mass of M_(CO) < (4.2\u221213) \u00d7 10\u207b\u2077 M_\u2295\u2060, and show this to be consistent with levels expected from planetesimal collisions, or from CO-ice sublimation as \u03baCrB begins its giant branch ascent.",
"doi": "10.1093/mnras/stac2782",
"issn": "0035-8711",
"publisher": "Royal Astronomical Society",
"publication": "Monthly Notices of the Royal Astronomical Society",
"publication_date": "2022-12",
"series_number": "2",
"volume": "517",
"issue": "2",
"pages": "2546-2566"
},
{
"id": "authors:bpfcv-m8651",
"collection": "authors",
"collection_id": "bpfcv-m8651",
"cite_using_url": "https://authors.library.caltech.edu/records/bpfcv-m8651",
"type": "article",
"title": "Tentative Evidence for Water Vapor in the Atmosphere of the Neptune-sized Exoplanet HD 106315c",
"author": [
{
"family_name": "Kreidberg",
"given_name": "Laura",
"orcid": "0000-0003-0514-1147"
},
{
"family_name": "Molli\u00e8re",
"given_name": "Paul",
"orcid": "0000-0003-4096-7067"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M."
},
{
"family_name": "Thorngren",
"given_name": "Daniel P.",
"orcid": "0000-0002-5113-8558"
},
{
"family_name": "Kawashima",
"given_name": "Yui",
"orcid": "0000-0003-3800-7518"
},
{
"family_name": "Morley",
"given_name": "Caroline V.",
"orcid": "0000-0002-4404-0456"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498"
},
{
"family_name": "Mikal-Evans",
"given_name": "Thomas",
"orcid": "0000-0001-5442-1300"
},
{
"family_name": "Berardo",
"given_name": "David",
"orcid": "0000-0001-6298-412X"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Gorjian",
"given_name": "Varoujan",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fortney",
"given_name": "Jonathan J.",
"orcid": "0000-0002-9843-4354"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Greene",
"given_name": "Thomas P.",
"orcid": "0000-0002-8963-8056"
},
{
"family_name": "Hardegree-Ullman",
"given_name": "Kevin K.",
"orcid": "0000-0003-3702-0382",
"clpid": "Hardegree-Ullman-Kevin-K"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Krick",
"given_name": "Jessica E.",
"orcid": "0000-0002-2413-5976",
"clpid": "Krick-Jessica-E"
},
{
"family_name": "Livingston",
"given_name": "John H.",
"orcid": "0000-0002-4881-3620"
},
{
"family_name": "Lothringer",
"given_name": "Joshua D.",
"orcid": "0000-0003-3667-8633"
},
{
"family_name": "Morales",
"given_name": "Farisa Y.",
"orcid": "0000-0001-9414-3851",
"clpid": "Morales-Farisa-Y"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Rodriguez",
"given_name": "Joseph E.",
"orcid": "0000-0001-8812-0565"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
}
],
"abstract": "We present a transmission spectrum for the Neptune-sized exoplanet HD 106315c from optical to infrared wavelengths based on transit observations from the Hubble Space Telescope/Wide Field Camera 3, K2, and Spitzer. The spectrum shows tentative evidence for a water absorption feature in the 1.1–1.7 μm wavelength range with a small amplitude of 30 ppm (corresponding to just 0.8 ± 0.04 atmospheric scale heights). Based on an atmospheric retrieval analysis, the presence of water vapor is tentatively favored with a Bayes factor of 1.7–2.6 (depending on prior assumptions). The spectrum is most consistent with either an enhanced metallicity or high-altitude condensates, or both. Cloud-free solar composition atmospheres are ruled out at >5σ confidence. We compare the spectrum to grids of cloudy and hazy forward models and find that the spectrum is fit well by models with moderate cloud lofting or haze formation efficiency over a wide range of metallicities (1–100× solar). We combine the constraints on the envelope composition with an interior structure model and estimate that the core mass fraction is \u22730.3. With a bulk composition reminiscent of that of Neptune and an orbital distance of 0.15 au, HD 106315c hints that planets may form out of broadly similar material and arrive at vastly different orbits later in their evolution.
",
"doi": "10.3847/1538-3881/ac85be",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-10-01",
"series_number": "4",
"volume": "164",
"issue": "4",
"pages": "124"
},
{
"id": "authors:6md28-n2p77",
"collection": "authors",
"collection_id": "6md28-n2p77",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220815-504805000",
"type": "article",
"title": "The TESS\u2013Keck Survey. XIII. An Eccentric Hot Neptune with a Similar-mass Outer Companion around TOI-1272",
"author": [
{
"family_name": "MacDougall",
"given_name": "Mason G.",
"orcid": "0000-0003-2562-9043",
"clpid": "MacDougall-Mason-G"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Fetherolf",
"given_name": "Tara",
"orcid": "0000-0002-3551-279X"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Angelo",
"given_name": "Isabel",
"orcid": "0000-0002-9751-2664"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Brinkman",
"given_name": "Casey",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Kosiarek",
"given_name": "Molly",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Pidhorodetska",
"given_name": "Daria",
"orcid": "0000-0001-9771-7953"
},
{
"family_name": "Polanski",
"given_name": "Alex",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280"
},
{
"family_name": "Turtelboom",
"given_name": "Emma V.",
"orcid": "0000-0002-1845-2617",
"clpid": "Turtelboom-Emma-V"
},
{
"family_name": "Tyler",
"given_name": "Dakotah",
"orcid": "0000-0003-0298-4667"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Esparza-Borges",
"given_name": "Emma",
"orcid": "0000-0002-2341-3233"
},
{
"family_name": "Fukui",
"given_name": "Akihiko",
"orcid": "0000-0002-4909-5763"
},
{
"family_name": "Isogai",
"given_name": "Keisuke",
"orcid": "0000-0002-6480-3799"
},
{
"family_name": "Kawauchi",
"given_name": "Kiyoe",
"orcid": "0000-0003-1205-5108"
},
{
"family_name": "Mori",
"given_name": "Mayuko",
"orcid": "0000-0002-5609-4427"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Nishiumi",
"given_name": "Taku",
"orcid": "0000-0003-1510-8981"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Parviainen",
"given_name": "Hannu",
"orcid": "0000-0001-5519-1391"
},
{
"family_name": "Watanabe",
"given_name": "Noriharu",
"orcid": "0000-0002-7522-8195"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Vanderspek",
"given_name": "Roland K.",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Fausnaugh",
"given_name": "M. M.",
"orcid": "0000-0002-9113-7162"
},
{
"family_name": "Mireles",
"given_name": "Ismael",
"orcid": "0000-0002-4510-2268"
},
{
"family_name": "Rodriguez",
"given_name": "David R.",
"orcid": "0000-0003-1286-5231"
}
],
"abstract": "We report the discovery of an eccentric hot Neptune and a non-transiting outer planet around TOI-1272. We identified the eccentricity of the inner planet, with an orbital period of 3.3 days and R_(p,b) = 4.1 \u00b1 0.2 R_\u2295, based on a mismatch between the observed transit duration and the expected duration for a circular orbit. Using ground-based radial velocity (RV) measurements from the HIRES instrument at the Keck Observatory, we measured the mass of TOI-1272b to be M_(p,b) = 25 \u00b1 2 M_\u2295. We also confirmed a high eccentricity of e_b = 0.34 \u00b1 0.06, placing TOI-1272b among the most eccentric well-characterized sub-Jovians. We used these RV measurements to also identify a non-transiting outer companion on an 8.7 day orbit with a similar mass of M_(p,c) sin i = 27 \u00b1 3 M_\u2295 and e\ua700 \u2272 0.35. Dynamically stable planet\u2013planet interactions have likely allowed TOI-1272b to avoid tidal eccentricity decay despite the short circularization timescale expected for a close-in eccentric Neptune. TOI-1272b also maintains an envelope mass fraction of f_(env) \u2248 11% despite its high equilibrium temperature, implying that it may currently be undergoing photoevaporation. This planet joins a small population of short-period Neptune-like planets within the \"Hot Neptune Desert\" with a poorly understood formation pathway.",
"doi": "10.3847/1538-3881/ac7ce1",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-09",
"series_number": "3",
"volume": "164",
"issue": "3",
"pages": "Art. No. 97"
},
{
"id": "authors:j5z13-eye90",
"collection": "authors",
"collection_id": "j5z13-eye90",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220817-897387000",
"type": "article",
"title": "The California Legacy Survey. III. On the Shoulders of (Some) Giants: The Relationship between Inner Small Planets and Outer Massive Planets",
"author": [
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Chachan",
"given_name": "Yayaati",
"orcid": "0000-0003-1728-8269",
"clpid": "Chachan-Yayaati"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Crepp",
"given_name": "Justin R.",
"orcid": "0000-0003-0800-0593",
"clpid": "Crepp-Justin-R"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Henry",
"given_name": "Gregory W.",
"orcid": "0000-0003-4155-8513",
"clpid": "Henry-Gregory-W"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Wright",
"given_name": "Jason T.",
"orcid": "0000-0001-6160-5888",
"clpid": "Wright-Jason-T"
}
],
"abstract": "We use a high-precision radial velocity survey of FGKM stars to study the conditional occurrence of two classes of planets: close-in small planets (0.023\u20131 au, 2\u201330 M_\u2295) and distant giant planets (0.23\u201310 au, 30\u20136000 M_\u2295). We find that 41_(-13)^(+15)% of systems with a close-in, small planet also host an outer giant, compared to 17.6_(-1.9)^(+2.4)% for stars irrespective of small planet presence. This implies that small planet hosts may be enhanced in outer giant occurrences compared to all stars with 1.7\u03c3 significance. Conversely, we estimate that 42\u208b\u2081\u2083\u207a\u00b9\u2077% of cold giant hosts also host an inner small planet, compared to 27.6_(-4.8)^(+5.8)% of stars irrespective of cold giant presence. We also find that more massive and close-in giant planets are not associated with small inner planets. Specifically, our sample indicates that small planets are less likely to have outer giant companions more massive than approximately 120 M_\u2295 and within 0.3\u20133 au, than to have less massive or more distant giant companions, with \u223c2.2\u03c3 confidence. This implies that massive gas giants within 0.3\u20133 au may suppress inner small planet formation. Additionally, we compare the host-star metallicity distributions for systems with only small planets and those with both small planets and cold giants. In agreement with previous studies, we find that stars in our survey that only host small planets have a metallicity distribution that is consistent with the broader solar-metallicity-median sample, while stars that host both small planets and gas giants are distinctly metal rich with \u223c2.3\u03c3 confidence.",
"doi": "10.3847/1538-4365/ac7230",
"issn": "0067-0049",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Supplement Series",
"publication_date": "2022-09",
"series_number": "1",
"volume": "262",
"issue": "1",
"pages": "Art. No. 1"
},
{
"id": "authors:hsr6t-p0x47",
"collection": "authors",
"collection_id": "hsr6t-p0x47",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220916-665853000",
"type": "article",
"title": "The HD 260655 system: Two rocky worlds transiting a bright M dwarf at 10 pc",
"author": [
{
"family_name": "Luque",
"given_name": "R.",
"orcid": "0000-0002-4671-2957",
"clpid": "Luque-Rafael"
},
{
"family_name": "Fulton",
"given_name": "B. J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Kunimoto",
"given_name": "M."
},
{
"family_name": "Amado",
"given_name": "P. J."
},
{
"family_name": "Gorrini",
"given_name": "P."
},
{
"family_name": "Dreizler",
"given_name": "S.",
"orcid": "0000-0001-6187-5941"
},
{
"family_name": "Hellier",
"given_name": "C.",
"orcid": "0000-0002-3439-1439"
},
{
"family_name": "Henry",
"given_name": "G. W.",
"orcid": "0000-0003-4155-8513"
},
{
"family_name": "Molaverdikhani",
"given_name": "K."
},
{
"family_name": "Morello",
"given_name": "G.",
"orcid": "0000-0002-4262-5661"
},
{
"family_name": "Pe\u00f1a-Mo\u00f1ino",
"given_name": "L."
},
{
"family_name": "P\u00e9rez-Torres",
"given_name": "M. A.",
"orcid": "0000-0001-5654-0266"
},
{
"family_name": "Pozuelos",
"given_name": "F. J.",
"orcid": "0000-0003-1572-7707"
},
{
"family_name": "Shan",
"given_name": "Y."
},
{
"family_name": "Anglada-Escud\u00e9",
"given_name": "G.",
"orcid": "0000-0002-3645-5977"
},
{
"family_name": "B\u00e9jar",
"given_name": "V. J. S.",
"orcid": "0000-0002-5086-4232"
},
{
"family_name": "Bergond",
"given_name": "G."
},
{
"family_name": "Boyle",
"given_name": "A. W.",
"clpid": "Boyle-Andy-W"
},
{
"family_name": "Caballero",
"given_name": "J. A."
},
{
"family_name": "Charbonneau",
"given_name": "D.",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Ciardi",
"given_name": "D. R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Dufoer",
"given_name": "S."
},
{
"family_name": "Espinoza",
"given_name": "N.",
"orcid": "0000-0001-9513-1449"
},
{
"family_name": "Everett",
"given_name": "M.",
"orcid": "0000-0002-0885-7215"
},
{
"family_name": "Fischer",
"given_name": "D. A.",
"orcid": "0000-0003-2221-0861"
},
{
"family_name": "Hatzes",
"given_name": "A. P."
},
{
"family_name": "Henning",
"given_name": "Th.",
"orcid": "0000-0002-1493-300X"
},
{
"family_name": "Hesse",
"given_name": "K."
},
{
"family_name": "Howard",
"given_name": "A. W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Howell",
"given_name": "S. B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Isaacson",
"given_name": "H.",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Jeffers",
"given_name": "S. V."
},
{
"family_name": "Jenkins",
"given_name": "J. M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Kane",
"given_name": "S. R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Kemmer",
"given_name": "J.",
"orcid": "0000-0003-3929-1442"
},
{
"family_name": "Khalafinejad",
"given_name": "S."
},
{
"family_name": "Kidwell",
"given_name": "R. C."
},
{
"family_name": "Kossakowski",
"given_name": "D.",
"orcid": "0000-0002-0436-7833"
},
{
"family_name": "Latham",
"given_name": "D. W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Lillo-Box",
"given_name": "J.",
"orcid": "0000-0003-3742-1987"
},
{
"family_name": "Lissauer",
"given_name": "J. J.",
"orcid": "0000-0001-6513-1659"
},
{
"family_name": "Montes",
"given_name": "D."
},
{
"family_name": "Orell-Miquel",
"given_name": "J.",
"orcid": "0000-0003-2066-8959"
},
{
"family_name": "Pall\u00e9",
"given_name": "E.",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Pollacco",
"given_name": "D."
},
{
"family_name": "Quirrenbach",
"given_name": "A.",
"orcid": "0000-0002-8388-6040"
},
{
"family_name": "Reffert",
"given_name": "S."
},
{
"family_name": "Reiners",
"given_name": "A."
},
{
"family_name": "Ribas",
"given_name": "I."
},
{
"family_name": "Ricker",
"given_name": "G. R."
},
{
"family_name": "Rogers",
"given_name": "L. A.",
"orcid": "0000-0003-0638-3455"
},
{
"family_name": "Sanz-Forcada",
"given_name": "J."
},
{
"family_name": "Schlecker",
"given_name": "M."
},
{
"family_name": "Schweitzer",
"given_name": "A."
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Shporer",
"given_name": "A.",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Stassun",
"given_name": "K. G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Stock",
"given_name": "S.",
"orcid": "0000-0002-1166-9338"
},
{
"family_name": "Tal-Or",
"given_name": "L."
},
{
"family_name": "Ting",
"given_name": "E. B."
},
{
"family_name": "Trifonov",
"given_name": "T."
},
{
"family_name": "Vanaverbeke",
"given_name": "S."
},
{
"family_name": "Vanderspek",
"given_name": "R.",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Villase\u00f1or",
"given_name": "J."
},
{
"family_name": "Winn",
"given_name": "J. N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Winters",
"given_name": "J. G."
},
{
"family_name": "Zapatero Osorio",
"given_name": "M. R."
}
],
"abstract": "We report the discovery of a multiplanetary system transiting the M0 V dwarf HD 260655 (GJ 239, TOI-4599). The system consists of at least two transiting planets, namely HD 260655 b, with a period of 2.77 d, a radius of Rb = 1.240 \u00b1 0.023 R\u2295, a mass of Mb = 2.14 \u00b1 0.34 M\u2295, and a bulk density of \u03c1b = 6.2 \u00b1 1.0 g cm\u22123, and HD 260655 c, with a period of 5.71 d, a radius of ${R_c} = 1.533_{ - 0.046}^{ + 0.051}{R_ \\oplus }$, a mass of Mc = 3.09 \u00b1 0.48 M\u2295, and a bulk density of ${\\rho _c} = 4.7_{ - 0.8}^{ + 0.9}{\\rm{g}}$ g cm\u22123. The planets have been detected in transit by the Transiting Exoplanet Survey Satellite (TESS) mission and confirmed independently with archival and new precise radial velocities obtained with the HIRES and CARMENES instruments since 1998 and 2016, respectively. At a distance of 10 pc, HD 260655 has become the fourth closest known multitransiting planet system after HD 219134, LTT 1445 A, and AU Mic. Due to the apparent brightness of the host star (J = 6.7 mag), both planets are among the most suitable rocky worlds known today for atmospheric studies with the James Webb Space Telescope, both in transmission and emission.",
"doi": "10.1051/0004-6361/202243834",
"issn": "0004-6361",
"publisher": "EDP Sciences",
"publication": "Astronomy and Astrophysics",
"publication_date": "2022-08",
"volume": "664",
"pages": "Art. No. A199"
},
{
"id": "authors:xrfz2-wdq32",
"collection": "authors",
"collection_id": "xrfz2-wdq32",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211004-232842917",
"type": "article",
"title": "The TESS-Keck Survey: Science Goals and Target Selection",
"author": [
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "MacDougall",
"given_name": "Mason G.",
"orcid": "0000-0003-2562-9043"
},
{
"family_name": "Fetherolf",
"given_name": "Tara",
"orcid": "0000-0002-3551-279X"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280"
},
{
"family_name": "Turtelboom",
"given_name": "Emma V.",
"orcid": "0000-0002-1845-2617"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Guerrero",
"given_name": "Natalia M.",
"orcid": "0000-0002-5169-9427"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Goeke",
"given_name": "Robert F.",
"orcid": "0000-0003-1748-5975"
},
{
"family_name": "Levine",
"given_name": "Alan M.",
"orcid": "0000-0001-8172-0453"
},
{
"family_name": "Ting",
"given_name": "Eric B.",
"orcid": "0000-0002-8219-9505"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Kielkopf",
"given_name": "John F.",
"orcid": "0000-0003-0497-2651"
},
{
"family_name": "Barkaoui",
"given_name": "Khalid",
"orcid": "0000-0003-1464-9276"
},
{
"family_name": "Benni",
"given_name": "Paul",
"orcid": "0000-0001-6981-8722"
},
{
"family_name": "Esparza-Borges",
"given_name": "Emma",
"orcid": "0000-0002-2341-3233"
},
{
"family_name": "Conti",
"given_name": "Dennis M.",
"orcid": "0000-0003-2239-0567"
},
{
"family_name": "Hooton",
"given_name": "Matthew J.",
"orcid": "0000-0003-0030-332X"
},
{
"family_name": "Kagetani",
"given_name": "Taiki",
"orcid": "0000-0002-5331-6637"
},
{
"family_name": "Laloum",
"given_name": "Didier"
},
{
"family_name": "Marino",
"given_name": "Giuseppe",
"orcid": "0000-0001-8134-0389"
},
{
"family_name": "Massey",
"given_name": "Bob",
"orcid": "0000-0001-8879-7138"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Papini",
"given_name": "Riccardo"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Srdo\u0107",
"given_name": "Gregor"
},
{
"family_name": "Stockdale",
"given_name": "Chris",
"orcid": "0000-0003-2163-1437"
},
{
"family_name": "Wang",
"given_name": "Gavin",
"orcid": "0000-0003-3092-4418"
},
{
"family_name": "Wittrock",
"given_name": "Justin M.",
"orcid": "0000-0002-7424-9891"
},
{
"family_name": "Zou",
"given_name": "Yujie",
"orcid": "0000-0002-5609-4427"
}
],
"abstract": "The Kepler and TESS missions have demonstrated that planets are ubiquitous. However, the success of these missions heavily depends on ground-based radial velocity (RV) surveys, which combined with transit photometry can yield bulk densities and orbital properties. While most Kepler host stars are too faint for detailed follow-up observations, TESS is detecting planets orbiting nearby bright stars that are more amenable to RV characterization. Here, we introduce the TESS-Keck Survey (TKS), an RV program using \u223c100 nights on Keck/HIRES to study exoplanets identified by TESS. The primary survey aims are investigating the link between stellar properties and the compositions of small planets; studying how the diversity of system architectures depends on dynamical configurations or planet multiplicity; identifying prime candidates for atmospheric studies with JWST; and understanding the role of stellar evolution in shaping planetary systems. We present a fully automated target selection algorithm, which yielded 103 planets in 86 systems for the final TKS sample. Most TKS hosts are inactive, solar-like, main-sequence stars (4500 K \u2264 T_(eff) <6000 K) at a wide range of metallicities. The selected TKS sample contains 71 small planets (R_p \u2264 4 R\u2295), 11 systems with multiple transiting candidates, six sub-day-period planets and three planets that are in or near the habitable zone (S_(inc) \u2264 10 S\u2295) of their host star. The target selection described here will facilitate the comparison of measured planet masses, densities, and eccentricities to predictions from planet population models. Our target selection software is publicly available and can be adapted for any survey that requires a balance of multiple science interests within a given telescope allocation.",
"doi": "10.3847/1538-3881/ac6266",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-06",
"series_number": "6",
"volume": "163",
"issue": "6",
"pages": "Art. No. 297"
},
{
"id": "authors:jkwjd-4pv08",
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"collection_id": "jkwjd-4pv08",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220517-214311999",
"type": "article",
"title": "The TESS-Keck Survey. XI. Mass Measurements for Four Transiting Sub-Neptunes Orbiting K Dwarf TOI\u20131246",
"author": [
{
"family_name": "Turtelboom",
"given_name": "Emma V.",
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"clpid": "Turtelboom-Emma-V"
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{
"family_name": "Weiss",
"given_name": "Lauren M.",
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{
"family_name": "Dressing",
"given_name": "Courtney D.",
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{
"family_name": "Nowak",
"given_name": "Grzegorz",
"orcid": "0000-0002-7031-7754"
},
{
"family_name": "Pall\u00e9",
"given_name": "Enric",
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{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
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{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
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{
"family_name": "Brinkman",
"given_name": "Casey",
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{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
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{
"family_name": "Claytor",
"given_name": "Zachary R.",
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{
"family_name": "Dai",
"given_name": "Fei",
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{
"family_name": "Dalba",
"given_name": "Paul A.",
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{
"family_name": "Giacalone",
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{
"family_name": "Gonzales",
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{
"family_name": "Harada",
"given_name": "Caleb K.",
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{
"family_name": "Hill",
"given_name": "Michelle L.",
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{
"family_name": "Holcomb",
"given_name": "Rae",
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{
"family_name": "Korth",
"given_name": "Judith",
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{
"family_name": "Lubin",
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{
"family_name": "Masseron",
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{
"family_name": "MacDougall",
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{
"family_name": "Mayo",
"given_name": "Andrew W.",
"orcid": "0000-0002-7216-2135"
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{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
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{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
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{
"family_name": "Polanski",
"given_name": "Alex S.",
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{
"family_name": "Rice",
"given_name": "Malena",
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{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
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{
"family_name": "Scarsdale",
"given_name": "Nicholas",
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{
"family_name": "Stassun",
"given_name": "Keivan G.",
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{
"family_name": "Tyler",
"given_name": "Dakotah B.",
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{
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{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
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{
"family_name": "Deeg",
"given_name": "Hans J.",
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"given_name": "Andrew W.",
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{
"family_name": "Huber",
"given_name": "Dan",
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{
"family_name": "Isaacson",
"given_name": "Howard",
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{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
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{
"family_name": "Lam",
"given_name": "Kristine W. F.",
"orcid": "0000-0002-9910-6088"
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{
"family_name": "Luque",
"given_name": "Rafael",
"orcid": "0000-0002-4671-2957"
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{
"family_name": "Mart\u00edn",
"given_name": "Eduardo L.",
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{
"family_name": "Morello",
"given_name": "Giuseppe",
"orcid": "0000-0002-4262-5661"
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{
"family_name": "Orell-Miquel",
"given_name": "Jaume",
"orcid": "0000-0003-2066-8959"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
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{
"family_name": "Robertson",
"given_name": "Paul",
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{
"family_name": "Roy",
"given_name": "Arpita",
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{
"family_name": "Van Eylen",
"given_name": "Vincent",
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{
"family_name": "Baker",
"given_name": "David",
"orcid": "0000-0002-2970-0532"
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{
"family_name": "Belinski",
"given_name": "Alexander A.",
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{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
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{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
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{
"family_name": "Cutting",
"given_name": "Neil"
},
{
"family_name": "Della-Rose",
"given_name": "Devin J.",
"orcid": "0000-0002-6042-7351"
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{
"family_name": "Ellingsen",
"given_name": "Taylor B."
},
{
"family_name": "Furlan",
"given_name": "E.",
"orcid": "0000-0001-9800-6248",
"clpid": "Furlan-Elise"
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{
"family_name": "Gan",
"given_name": "Tianjun",
"orcid": "0000-0002-4503-9705"
},
{
"family_name": "Gnilka",
"given_name": "Crystal L.",
"orcid": "0000-0003-2519-6161",
"clpid": "Gnilka-Crystal-L"
},
{
"family_name": "Guerra",
"given_name": "Pere",
"orcid": "0000-0002-4308-2339"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Jimenez",
"given_name": "Mary",
"orcid": "0000-0002-5000-9316"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Larivi\u00e8re",
"given_name": "Maude"
},
{
"family_name": "Lester",
"given_name": "Kathryn V.",
"orcid": "0000-0002-9903-9911"
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{
"family_name": "Lillo-Box",
"given_name": "Jorge",
"orcid": "0000-0003-3742-1987"
},
{
"family_name": "Luker",
"given_name": "Lindy"
},
{
"family_name": "Mann",
"given_name": "Christopher R.",
"orcid": "0000-0002-9312-0073"
},
{
"family_name": "Plavchan",
"given_name": "Peter P.",
"orcid": "0000-0002-8864-1667",
"clpid": "Plavchan-P"
},
{
"family_name": "Safonov",
"given_name": "Boris",
"orcid": "0000-0003-1713-3208"
},
{
"family_name": "Skinner",
"given_name": "Brett"
},
{
"family_name": "Strakhov",
"given_name": "Ivan A.",
"orcid": "0000-0003-0647-6133"
},
{
"family_name": "Wittrock",
"given_name": "Justin M.",
"orcid": "0000-0002-7424-9891"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Essack",
"given_name": "Zahra",
"orcid": "0000-0002-2482-0180"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Quintana",
"given_name": "Elisa V.",
"orcid": "0000-0003-1309-2904"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
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{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "Multiplanet systems are valuable arenas for investigating exoplanet architectures and comparing planetary siblings. TOI-1246 is one such system, with a moderately bright K dwarf (V = 11.6, K = 9.9) and four transiting sub-Neptunes identified by TESS with orbital periods of 4.31, 5.90, 18.66, and 37.92 days. We collected 130 radial velocity observations with Keck/HIRES and TNG/HARPS-N to measure planet masses. We refit the 14 sectors of TESS photometry to refine planet radii (2.97 \u00b1 0.06 R_\u2295, 2.47 \u00b1 0.08 R_\u2295, 3.46 \u00b1 0.09 R_\u2295, and 3.72 \u00b1 0.16 R_\u2295) and confirm the four planets. We find that TOI-1246 e is substantially more massive than the three inner planets (8.1 \u00b1 1.1 M_\u2295, 8.8 \u00b1 1.2 M_\u2295, 5.3 \u00b1 1.7 M_\u2295, and 14.8 \u00b1 2.3 M_\u2295). The two outer planets, TOI-1246 d and TOI-1246 e, lie near to the 2:1 resonance (P_e/P_d = 2.03) and exhibit transit-timing variations. TOI-1246 is one of the brightest four-planet systems, making it amenable for continued observations. It is one of only five systems with measured masses and radii for all four transiting planets. The planet densities range from 0.70 \u00b1 0.24 to 3.21 \u00b1 0.44 g cm\u207b\u00b9, implying a range of bulk and atmospheric compositions. We also report a fifth planet candidate found in the RV data with a minimum mass of 25.6 \u00b1 3.6 M_\u2295. This planet candidate is exterior to TOI-1246 e, with a candidate period of 93.8 days, and we discuss the implications if it is confirmed to be planetary in nature.",
"doi": "10.3847/1538-3881/ac69e5",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-06",
"series_number": "6",
"volume": "163",
"issue": "6",
"pages": "Art. No. 293"
},
{
"id": "authors:9bmmh-j5m20",
"collection": "authors",
"collection_id": "9bmmh-j5m20",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220722-769478000",
"type": "article",
"title": "Scaling K2. V. Statistical Validation of 60 New Exoplanets From K2 Campaigns 2\u201318",
"author": [
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Bhure",
"given_name": "Sakhee",
"orcid": "0000-0002-6673-8206",
"clpid": "Bhure-Sakhee"
},
{
"family_name": "Zink",
"given_name": "Jon K.",
"orcid": "0000-0003-1848-2063",
"clpid": "Zink-Jon-K"
},
{
"family_name": "Hardegree-Ullman",
"given_name": "Kevin K.",
"orcid": "0000-0003-3702-0382"
},
{
"family_name": "Adkins",
"given_name": "Britt Duffy"
},
{
"family_name": "Hedges",
"given_name": "Christina",
"orcid": "0000-0002-3385-8391"
},
{
"family_name": "Morton",
"given_name": "Timothy D.",
"orcid": "0000-0002-8537-5711"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Cochran",
"given_name": "William D.",
"orcid": "0000-0001-9662-3496"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Everett",
"given_name": "Mark E.",
"orcid": "0000-0002-0885-7215"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-H-T"
},
{
"family_name": "Livingston",
"given_name": "John H.",
"orcid": "0000-0002-4881-3620"
},
{
"family_name": "Ziegler",
"given_name": "Carl",
"orcid": "0000-0002-0619-7639"
},
{
"family_name": "Berlind",
"given_name": "Perry"
},
{
"family_name": "Calkins",
"given_name": "Michael L.",
"orcid": "0000-0002-2830-5661"
},
{
"family_name": "Esquerdo",
"given_name": "Gilbert A.",
"orcid": "0000-0002-9789-5474"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Endl",
"given_name": "Michael",
"orcid": "0000-0002-7714-6310"
},
{
"family_name": "MacQueen",
"given_name": "Phillip J."
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Allen",
"given_name": "Bridgette E.",
"clpid": "Allen-Bridgette-E"
},
{
"family_name": "Berberyann",
"given_name": "Arthur",
"clpid": "Berberyann-Arthur"
},
{
"family_name": "Ciardi",
"given_name": "Krys N.",
"clpid": "Ciardi-Krys-N"
},
{
"family_name": "Dunlavy",
"given_name": "Ava",
"clpid": "Dunlavy-Ava"
},
{
"family_name": "Glassford",
"given_name": "Sofia H.",
"clpid": "Glassford-Sofia-H"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Hirano",
"given_name": "Teruyuki",
"orcid": "0000-0003-3618-7535"
},
{
"family_name": "Tamura",
"given_name": "Motohide",
"orcid": "0000-0002-6510-0681"
},
{
"family_name": "Beichman",
"given_name": "Charles",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Gonzales",
"given_name": "Erica J.",
"orcid": "0000-0002-9329-2190"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Barclay",
"given_name": "Thomas",
"orcid": "0000-0001-7139-2724"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Gilbert",
"given_name": "Emily A.",
"orcid": "0000-0002-0388-8004"
},
{
"family_name": "Matthews",
"given_name": "Elisabeth C.",
"orcid": "0000-0003-0593-1560"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
}
],
"abstract": "The NASA K2 mission, salvaged from the hardware failures of the Kepler telescope, has continued Kepler's planet-hunting success. It has revealed nearly 500 transiting planets around the ecliptic plane, many of which are the subject of further study, and over 1000 additional candidates. Here we present the results of an ongoing project to follow-up and statistically validate new K2 planets, in particular to identify promising new targets for further characterization. By analyzing the reconnaissance spectra, high-resolution imaging, centroid variations, and statistical likelihood of the signals of 91 candidates, we validate 60 new planets in 46 systems. These include a number of planets amenable to transmission spectroscopy (K2-384 f, K2-387 b, K2-390 b, K2-403 b, and K2-398 c), emission spectroscopy (K2-371 b, K2-370 b, and K2-399 b), and both (K2-405 b and K2-406 b); several systems with planets in or close to mean motion resonances (K2-381 and K2-398) including a compact, TRAPPIST-1-like system of five small planets orbiting a mid-M dwarf (K2-384); an ultra-short-period sub-Saturn in the hot Saturn desert (K2-399 b); and a super-Earth orbiting a moderately bright (V = 11.93), metal-poor ([Fe/H] = \u22120.579 \u00b1 0.080) host star (K2-408 b). In total we validate planets around four F stars, 26 G stars, 13 K stars, and three M dwarfs. In addition, we provide a list of 37 vetted planet candidates that should be prioritized for future follow-up observation in order to be confirmed or validated.",
"doi": "10.3847/1538-3881/ac5c4c",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-06",
"series_number": "6",
"volume": "163",
"issue": "6",
"pages": "Art. No. 244"
},
{
"id": "authors:d7h81-cqn93",
"collection": "authors",
"collection_id": "d7h81-cqn93",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211006-174848355",
"type": "article",
"title": "Confirmation of the Long-period Planet Orbiting Gliese 411 and the Detection of a New Planet Candidate",
"author": [
{
"family_name": "Hurt",
"given_name": "Spencer A.",
"orcid": "0000-0002-6903-9080",
"clpid": "Hurt-Spencer-A"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
}
],
"abstract": "We perform a detailed characterization of the planetary system orbiting the bright, nearby M dwarf Gliese 411 using radial velocities gathered by APF, HIRES, SOPHIE, and CARMENES. We confirm the presence of a signal with a period near 2900 days that has been disputed as either a planet or a long-period stellar magnetic cycle. An analysis of activity metrics including the H\u03b1 and log\u2032R_(HK) indices supports the interpretation that the signal corresponds to a Neptune-like planet, GJ 411 c. An additional signal near 215 days was previously dismissed as an instrumental systematic, but we find that a planetary origin cannot be ruled out. With a semimajor axis of 0.5142 \u00b1 0.0042 au, this candidate's orbit falls between those of its companions and is located beyond the outer edge of the system's habitable zone (determined using the moist greenhouse and maximum greenhouse limits in Kopparapu et al. 2013). It has a minimum mass of 3.89 \u00b1 0.84 M\u2295, giving a radial-velocity amplitude of 0.81 \u00b1 0.18 m s\u207b\u00b9. If confirmed, this would be one of the lowest-amplitude planet detections from any of these four instruments. Our analysis of the joint radial-velocity data set also provides tighter constraints on the orbital parameters for the previously known planets. Photometric data from TESS do not show any signs of a transit event. However, the outermost planet and candidate are prime targets for future direct imaging missions, and GJ 411 c may be detectable via astrometry.",
"doi": "10.3847/1538-3881/ac5c47",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-05",
"series_number": "5",
"volume": "163",
"issue": "5",
"pages": "Art. No. 218"
},
{
"id": "authors:sbwhn-7d873",
"collection": "authors",
"collection_id": "sbwhn-7d873",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211217-233237912",
"type": "article",
"title": "Best Practices for Data Publication in the Astronomical Literature",
"author": [
{
"family_name": "Chen",
"given_name": "Tracy X.",
"orcid": "0000-0001-9152-6224",
"clpid": "Chen-Tracy-Xi"
},
{
"family_name": "Schmitz",
"given_name": "Marion",
"orcid": "0000-0002-2055-7549",
"clpid": "Schmitz-Marion"
},
{
"family_name": "Mazzarella",
"given_name": "Joseph M.",
"orcid": "0000-0002-8204-8619",
"clpid": "Mazzarella-Joseph-M"
},
{
"family_name": "Wu",
"given_name": "Xiuqin",
"orcid": "0000-0002-4788-9236",
"clpid": "Wu-Xiuqin"
},
{
"family_name": "van Eyken",
"given_name": "Julian C.",
"orcid": "0000-0003-2192-5371",
"clpid": "van-Eyken-Julian-C"
},
{
"family_name": "Accomazzi",
"given_name": "Alberto",
"orcid": "0000-0002-4110-3511"
},
{
"family_name": "Akeson",
"given_name": "Rachel L.",
"orcid": "0000-0001-9674-1564",
"clpid": "Akeson-Rachel-L"
},
{
"family_name": "Allen",
"given_name": "Mark",
"orcid": "0000-0003-2168-0087",
"clpid": "Allen-Mark-G"
},
{
"family_name": "Beaton",
"given_name": "Rachael",
"orcid": "0000-0002-1691-8217"
},
{
"family_name": "Berriman",
"given_name": "G. Bruce",
"orcid": "0000-0001-8388-534X",
"clpid": "Berriman-G-Bruce"
},
{
"family_name": "Boyle",
"given_name": "Andrew W.",
"orcid": "0000-0001-6037-2971",
"clpid": "Boyle-Andrew-W"
},
{
"family_name": "Brouty",
"given_name": "Marianne",
"orcid": "0000-0002-0944-1211"
},
{
"family_name": "Chan",
"given_name": "Ben H. P.",
"clpid": "Chan-Ben-Hiu-Pan"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Cook",
"given_name": "David",
"orcid": "0000-0002-6877-7655",
"clpid": "Cook-David-O"
},
{
"family_name": "D'Abrusco",
"given_name": "Raffaele",
"orcid": "0000-0003-3073-0605"
},
{
"family_name": "Ebert",
"given_name": "Rick",
"orcid": "0000-0002-9500-8587",
"clpid": "Ebert-Rick"
},
{
"family_name": "Frayer",
"given_name": "Cren",
"clpid": "Frayer-Cren"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Gelino",
"given_name": "Christopher",
"clpid": "Gelino-Christopher-R"
},
{
"family_name": "Helou",
"given_name": "George",
"orcid": "0000-0003-3367-3415",
"clpid": "Helou-G"
},
{
"family_name": "Henderson",
"given_name": "Calen B.",
"orcid": "0000-0001-8877-9060",
"clpid": "Henderson-Calen-B"
},
{
"family_name": "Howell",
"given_name": "Justin",
"orcid": "0000-0001-6028-8059",
"clpid": "Howell-Justin-H"
},
{
"family_name": "Kim",
"given_name": "Joyce",
"clpid": "Kim-Joyce"
},
{
"family_name": "Landais",
"given_name": "Gilles",
"orcid": "0000-0003-4868-5873"
},
{
"family_name": "Lo",
"given_name": "Tak",
"clpid": "Lo-Tak"
},
{
"family_name": "Loup",
"given_name": "C\u00e9cile"
},
{
"family_name": "Madore",
"given_name": "Barry",
"orcid": "0000-0002-1576-1676"
},
{
"family_name": "Monari",
"given_name": "Giacomo",
"orcid": "0000-0002-6863-0661"
},
{
"family_name": "Muench",
"given_name": "August",
"orcid": "0000-0003-0666-6367"
},
{
"family_name": "Oberto",
"given_name": "Ana\u00efs",
"orcid": "0000-0001-7141-1542"
},
{
"family_name": "Ocvirk",
"given_name": "Pierre",
"orcid": "0000-0002-8488-504X"
},
{
"family_name": "Peek",
"given_name": "Joshua E. G.",
"orcid": "0000-0003-4797-7030"
},
{
"family_name": "Perret",
"given_name": "Emmanuelle",
"orcid": "0000-0002-4068-8175"
},
{
"family_name": "Pevunova",
"given_name": "Olga",
"clpid": "Pevunova-Olga"
},
{
"family_name": "Ramirez",
"given_name": "Solange V."
},
{
"family_name": "Rebull",
"given_name": "Luisa",
"orcid": "0000-0001-6381-515X",
"clpid": "Rebull-Luisa-M"
},
{
"family_name": "Shemmer",
"given_name": "Ohad",
"orcid": "0000-0003-4327-1460"
},
{
"family_name": "Smale",
"given_name": "Alan",
"orcid": "0000-0001-9207-9796"
},
{
"family_name": "Tam",
"given_name": "Raymond",
"clpid": "Tam-Raymond"
},
{
"family_name": "Terek",
"given_name": "Scott",
"clpid": "Terek-Scott"
},
{
"family_name": "Van Orsow",
"given_name": "Doug",
"orcid": "0000-0001-8405-0264"
},
{
"family_name": "Vannier",
"given_name": "Patricia"
},
{
"family_name": "Wang",
"given_name": "Shin-Ywan",
"clpid": "Wang-Shin-Ywan"
}
],
"abstract": "We present an overview of best practices for publishing data in astronomy and astrophysics journals. These recommendations are intended as a reference for authors to help prepare and publish data in a way that will better represent and support science results, enable better data sharing, improve reproducibility, and enhance the reusability of data. Observance of these guidelines will also help to streamline the extraction, preservation, integration and cross-linking of valuable data from astrophysics literature into major astronomical databases, and consequently facilitate new modes of science discovery that will better exploit the vast quantities of panchromatic and multidimensional data associated with the literature. We encourage authors, journal editors, referees, and publishers to implement the best practices reviewed here, as well as related recommendations from international astronomical organizations such as the International Astronomical Union for publication of nomenclature, data, and metadata. A convenient Checklist of Recommendations for Publishing Data in the Literature (Appendix A) is included for authors to consult before the submission of the final version of their journal articles and associated data files. We recommend that publishers of journals in astronomy and astrophysics incorporate a link to this document in their Instructions to Authors.",
"doi": "10.3847/1538-4365/ac6268",
"issn": "0067-0049",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Supplement Series",
"publication_date": "2022-05",
"series_number": "1",
"volume": "260",
"issue": "1",
"pages": "Art. No. 5"
},
{
"id": "authors:4kr61-eye39",
"collection": "authors",
"collection_id": "4kr61-eye39",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220228-183210630",
"type": "article",
"title": "The California-Kepler Survey. X. The Radius Gap as a Function of Stellar Mass, Metallicity, and Age",
"author": [
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Rogers",
"given_name": "James G.",
"orcid": "0000-0001-7615-6798",
"clpid": "Rogers-James-G"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Owen",
"given_name": "James E.",
"orcid": "0000-0002-4856-7837",
"clpid": "Owen-James-E"
},
{
"family_name": "Kraus",
"given_name": "Adam L.",
"orcid": "0000-0001-9811-568X",
"clpid": "Kraus-Adam-L"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X",
"clpid": "Winn-Joshua-N"
},
{
"family_name": "MacDougall",
"given_name": "Mason G.",
"orcid": "0000-0003-2562-9043",
"clpid": "MacDougall-Mason-G"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359",
"clpid": "Kosiarek-Molly-R"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
}
],
"abstract": "In 2017, the California-Kepler Survey (CKS) published its first data release (DR1) of high-resolution optical spectra of 1305 planet hosts. Refined CKS planet radii revealed that small planets are bifurcated into two distinct populations, super-Earths (smaller than 1.5 R_\u2295) and sub-Neptunes (between 2.0 and 4.0 R_\u2295), with few planets in between (the \"radius gap\"). Several theoretical models of the radius gap predict variation with stellar mass, but testing these predictions is challenging with CKS DR1 due to its limited M\u22c6 range of 0.8\u20131.4 M\u2299. Here we present CKS DR2 with 411 additional spectra and derived properties focusing on stars of 0.5\u20130.8 M_\u2299. We found that the radius gap follows R_p \u221d P^m with m = \u22120.10 \u00b1 0.03, consistent with predictions of X-ray and ultraviolet- and core-powered mass-loss mechanisms. We found no evidence that m varies with M\u22c6. We observed a correlation between the average sub-Neptune size and M\u22c6. Over 0.5\u20131.4 M\u2299, the average sub-Neptune grows from 2.1 to 2.6 R_\u2295, following R_p \u221d M^\u03b1\u22c6 with \u03b1 = 0.25 \u00b1 0.03. In contrast, there is no detectable change for super-Earths. These M\u22c6\u2013R_p trends suggest that protoplanetary disks can efficiently produce cores up to a threshold mass of M_c, which grows linearly with stellar mass according to M_c \u2248 10 M_\u2295(M\u22c6/M_\u2299). There is no significant correlation between sub-Neptune size and stellar metallicity (over \u22120.5 to +0.5 dex), suggesting a weak relationship between planet envelope opacity and stellar metallicity. Finally, there is no significant variation in sub-Neptune size with stellar age (over 1\u201310 Gyr), which suggests that the majority of envelope contraction concludes after \u223c1 Gyr.",
"doi": "10.3847/1538-3881/ac51e3",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-04",
"series_number": "4",
"volume": "163",
"issue": "4",
"pages": "Art. No. 179"
},
{
"id": "authors:6mggd-av143",
"collection": "authors",
"collection_id": "6mggd-av143",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211018-185047173",
"type": "article",
"title": "A Second Planet Transiting LTT 1445A and a Determination of the Masses of Both Worlds",
"author": [
{
"family_name": "Winters",
"given_name": "Jennifer G.",
"orcid": "0000-0001-6031-9513",
"clpid": "Winters-Jennifer-G"
},
{
"family_name": "Cloutier",
"given_name": "Ryan",
"orcid": "0000-0001-5383-9393"
},
{
"family_name": "Medina",
"given_name": "Amber A.",
"orcid": "0000-0001-8726-3134"
},
{
"family_name": "Irwin",
"given_name": "Jonathan M."
},
{
"family_name": "Charbonneau",
"given_name": "David",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Astudillo-Defru",
"given_name": "Nicola",
"orcid": "0000-0002-8462-515X"
},
{
"family_name": "Bonfils",
"given_name": "Xavier",
"orcid": "0000-0001-9003-8894"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Bean",
"given_name": "Jacob L.",
"orcid": "0000-0003-4733-6532"
},
{
"family_name": "Seifahrt",
"given_name": "Andreas",
"orcid": "0000-0003-4526-3747"
},
{
"family_name": "Teske",
"given_name": "Johanna K."
},
{
"family_name": "Eastman",
"given_name": "Jason D.",
"orcid": "0000-0003-3773-5142"
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Jensen",
"given_name": "Eric L. N.",
"orcid": "0000-0002-4625-7333"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Payne",
"given_name": "Matthew J.",
"orcid": "0000-0001-5133-6303"
},
{
"family_name": "Kristiansen",
"given_name": "Martti H.",
"orcid": "0000-0002-2607-138X"
},
{
"family_name": "Spencer",
"given_name": "Alton",
"orcid": "0000-0001-9263-6775"
},
{
"family_name": "Vanderburg",
"given_name": "Andrew",
"orcid": "0000-0001-7246-5438"
},
{
"family_name": "Zechmeister",
"given_name": "Mathias",
"orcid": "0000-0002-6532-4378"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Wang",
"given_name": "Sharon Xuesong",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Wang",
"given_name": "Gavin",
"orcid": "0000-0003-3092-4418"
},
{
"family_name": "Udry",
"given_name": "St\u00e9phane",
"orcid": "0000-0001-7576-6236"
},
{
"family_name": "Terentev",
"given_name": "Ivan A.",
"orcid": "0000-0002-0654-4442"
},
{
"family_name": "St\u00fcrmer",
"given_name": "Julian",
"orcid": "0000-0002-4410-4712"
},
{
"family_name": "Stef\u00e1nsson",
"given_name": "Gu\u00f0mundur",
"orcid": "0000-0001-7409-5688"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Shectman",
"given_name": "Stephen",
"orcid": "0000-0002-8681-6136"
},
{
"family_name": "Sefako",
"given_name": "Ramotholo",
"orcid": "0000-0003-3904-6754"
},
{
"family_name": "Schwengeler",
"given_name": "Hans Martin",
"orcid": "0000-0002-1637-2189",
"clpid": "Schwengeler-Hans-Martin"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Pepe",
"given_name": "Francesco",
"orcid": "0000-0002-9815-773X"
},
{
"family_name": "Omohundro",
"given_name": "Mark"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Montet",
"given_name": "Benjamin T.",
"orcid": "0000-0001-7516-8308"
},
{
"family_name": "Mennickent",
"given_name": "Ronald",
"orcid": "0000-0002-6245-0264"
},
{
"family_name": "Mayo",
"given_name": "Andrew W.",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Massey",
"given_name": "Bob",
"orcid": "0000-0001-8879-7138"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Lovis",
"given_name": "Christophe",
"orcid": "0000-0001-7120-5837"
},
{
"family_name": "Lewin",
"given_name": "Pablo",
"orcid": "0000-0003-0828-6368"
},
{
"family_name": "Kasper",
"given_name": "David",
"orcid": "0000-0003-0534-6388"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Horne",
"given_name": "Keith",
"orcid": "0000-0003-1728-0304"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Gorrini",
"given_name": "Paula",
"orcid": "0000-0002-6394-6544"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Forveille",
"given_name": "Thierry",
"orcid": "0000-0003-0536-4607"
},
{
"family_name": "Figueira",
"given_name": "Pedro",
"orcid": "0000-0001-8504-283X"
},
{
"family_name": "Fetherolf",
"given_name": "Tara",
"orcid": "0000-0002-3551-279X"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "D\u00edaz",
"given_name": "Rodrigo F.",
"orcid": "0000-0001-9289-5160"
},
{
"family_name": "Delfosse",
"given_name": "Xavier",
"orcid": "0000-0001-5099-7978"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Cortes",
"given_name": "C. C."
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Crane",
"given_name": "Jeffrey D.",
"orcid": "0000-0002-5226-787X"
},
{
"family_name": "Conti",
"given_name": "Dennis M.",
"orcid": "0000-0003-2239-0567"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Butler",
"given_name": "R. Paul",
"orcid": "0000-0003-1305-3761"
},
{
"family_name": "Brown",
"given_name": "Peyton",
"orcid": "0000-0002-2546-9708"
},
{
"family_name": "Brady",
"given_name": "Madison",
"orcid": "0000-0003-2404-2427"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Almenara",
"given_name": "Jose-Manuel",
"orcid": "0000-0003-3208-9815"
}
],
"abstract": "LTT 1445 is a hierarchical triple M-dwarf star system located at a distance of 6.86 pc. The primary star LTT 1445A (0.257 M_\u2299) is known to host the transiting planet LTT 1445Ab with an orbital period of 5.36 days, making it the second-closest known transiting exoplanet system, and the closest one for which the host is an M dwarf. Using Transiting Exoplanet Survey Satellite data, we present the discovery of a second planet in the LTT 1445 system, with an orbital period of 3.12 days. We combine radial-velocity measurements obtained from the five spectrographs, Echelle Spectrograph for Rocky Exoplanets and Stable Spectroscopic Observations, High Accuracy Radial Velocity Planet Searcher, High-Resolution Echelle Spectrometer, MAROON-X, and Planet Finder Spectrograph to establish that the new world also orbits LTT 1445A. We determine the mass and radius of LTT 1445Ab to be 2.87 \u00b1 0.25 M_\u2295 and 1.304^(+0.067)_(-0.060) R_\u2295, consistent with an Earth-like composition. For the newly discovered LTT 1445Ac, we measure a mass of 1.54^(+0.20)_(-0.19) M_\u2295 and a minimum radius of 1.15 R_\u2295, but we cannot determine the radius directly as the signal-to-noise ratio of our light curve permits both grazing and nongrazing configurations. Using MEarth photometry and ground-based spectroscopy, we establish that star C (0.161 M_\u2299) is likely the source of the 1.4 day rotation period, and star B (0.215 M_\u2299) has a likely rotation period of 6.7 days. We estimate a probable rotation period of 85 days for LTT 1445A. Thus, this triple M-dwarf system appears to be in a special evolutionary stage where the most massive M dwarf has spun down, the intermediate mass M dwarf is in the process of spinning down, while the least massive stellar component has not yet begun to spin down.",
"doi": "10.3847/1538-3881/ac50a9",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-04",
"series_number": "4",
"volume": "163",
"issue": "4",
"pages": "Art. No. 168"
},
{
"id": "authors:w6g58-fre67",
"collection": "authors",
"collection_id": "w6g58-fre67",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220113-234524711",
"type": "article",
"title": "Kepler-167e as a Probe of the Formation Histories of Cold Giants with Inner Super-Earths",
"author": [
{
"family_name": "Chachan",
"given_name": "Yayaati",
"orcid": "0000-0003-1728-8269",
"clpid": "Chachan-Yayaati"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Thorngren",
"given_name": "Daniel",
"orcid": "0000-0002-5113-8558",
"clpid": "Thorngren-Daniel-P"
},
{
"family_name": "Beichman",
"given_name": "Charles",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826",
"clpid": "Van-Zandt-Judah"
}
],
"abstract": "The observed correlation between outer giant planets and inner super-Earths is emerging as an important constraint on planet formation theories. In this study, we focus on Kepler-167, which is currently the only system known to contain both inner transiting super-Earths and a confirmed outer transiting gas giant companion beyond 1 au. Using long-term radial velocity monitoring, we measure the mass of the gas giant Kepler-167e (P = 1071 days) to be 1.01^(+0.16)_(\u22120.15) M_J, thus confirming it as a Jupiter analog. We refit the Kepler photometry to obtain updated radii for all four planets. Using a planetary structure model, we estimate that Kepler-167e contains 66 \u00b1 19 M\u2295 of solids and is significantly enriched in metals relative to its solar-metallicity host star. We use these new constraints to explore the broader question of how systems like Kepler-167 form in the pebble accretion framework for giant planet core formation. We utilize simple disk evolution models to demonstrate that more massive and metal-rich disks, which are the most favorable sites for giant planet formation, can also deliver enough solids to the inner disk to form systems of super-Earths. We use these same models to constrain the nature of Kepler-167's protoplanetary disk and find that it likely contained \u2273300 M\u2295 of dust and was \u227340 au in size. These values overlap with the upper end of the observed dust mass and size distributions of Class 0 and I disks and are also consistent with the observed occurrence rate of Jupiter analogs around Sun-like stars.",
"doi": "10.3847/1538-4357/ac3ed6",
"issn": "0004-637X",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal",
"publication_date": "2022-02-10",
"series_number": "1",
"volume": "926",
"issue": "1",
"pages": "Art. No. 62"
},
{
"id": "authors:c6anx-m6s70",
"collection": "authors",
"collection_id": "c6anx-m6s70",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211018-185245786",
"type": "article",
"title": "TESS-Keck Survey. IX. Masses of Three Sub-Neptunes Orbiting HD 191939 and the Discovery of a Warm Jovian plus a Distant Substellar Companion",
"author": [
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736",
"clpid": "Lubin-Jack"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Holcomb",
"given_name": "Rae",
"orcid": "0000-0002-5034-9476"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280"
},
{
"family_name": "Batygin",
"given_name": "Konstantin",
"orcid": "0000-0002-7094-7908",
"clpid": "Batygin-K"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Kaz",
"given_name": "Gary"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "Exoplanet systems with multiple transiting planets are natural laboratories for testing planetary astrophysics. One such system is HD 191939 (TOI 1339), a bright (V = 9) and Sun-like (G9V) star, which TESS found to host three transiting planets (b, c, and d). The planets have periods of 9, 29, and 38 days each with similar sizes from 3 to 3.4 R_\u2295. To further characterize the system, we measured the radial velocity (RV) of HD 191939 over 415 days with Keck/HIRES and APF/Levy. We find that M_b = 10.4 \u00b1 0.9 M_\u2295 and M_c = 7.2 \u00b1 1.4 M_\u2295, which are low compared to most known planets of comparable radii. The RVs yield only an upper limit on M_d (<5.8 M_\u2295 at 2\u03c3). The RVs further reveal a fourth planet (e) with a minimum mass of 0.34 \u00b1 0.01 M_(Jup) and an orbital period of 101.4 \u00b1 0.4 days. Despite its nontransiting geometry, secular interactions between planet e and the inner transiting planets indicate that planet e is coplanar with the transiting planets (\u0394i < 10\u00b0). We identify a second high-mass planet (f) with 95% confidence intervals on mass between 2 and 11 M_(Jup) and period between 1700 and 7200 days, based on a joint analysis of RVs and astrometry from Gaia and Hipparcos. As a bright star hosting multiple planets with well-measured masses, HD 191939 presents many options for comparative planetary astronomy, including characterization with JWST.",
"doi": "10.3847/1538-3881/ac3d38",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-02",
"series_number": "2",
"volume": "163",
"issue": "2",
"pages": "Art. No. 101"
},
{
"id": "authors:be9x2-j1f23",
"collection": "authors",
"collection_id": "be9x2-j1f23",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220119-572428000",
"type": "article",
"title": "The TESS-Keck Survey. VIII. Confirmation of a Transiting Giant Planet on an Eccentric 261 Day Orbit with the Automated Planet Finder Telescope",
"author": [
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Villanueva",
"given_name": "Steven",
"orcid": "0000-0001-6213-8804"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Jacobs",
"given_name": "Thomas Lee",
"orcid": "0000-0003-3988-3245"
},
{
"family_name": "LaCourse",
"given_name": "Daryll M.",
"orcid": "0000-0002-8527-2114"
},
{
"family_name": "Gagliano",
"given_name": "Robert"
},
{
"family_name": "Kristiansen",
"given_name": "Martti H.",
"orcid": "0000-0002-2607-138X"
},
{
"family_name": "Omohundro",
"given_name": "Mark"
},
{
"family_name": "Schwengeler",
"given_name": "Hans M.",
"orcid": "0000-0002-1637-2189"
},
{
"family_name": "Terentev",
"given_name": "Ivan A.",
"orcid": "0000-0002-0654-4442"
},
{
"family_name": "Vanderburg",
"given_name": "Andrew",
"orcid": "0000-0001-7246-5438"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Thorngren",
"given_name": "Daniel P.",
"orcid": "0000-0002-5113-8558"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Brinkman",
"given_name": "Casey L.",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Mayo",
"given_name": "Andrew W.",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280"
},
{
"family_name": "Turtelboom",
"given_name": "Emma V."
},
{
"family_name": "Tyler",
"given_name": "Dakotah"
},
{
"family_name": "Benni",
"given_name": "Paul"
},
{
"family_name": "Boyce",
"given_name": "Pat"
},
{
"family_name": "Esposito",
"given_name": "Thomas M.",
"orcid": "0000-0002-0792-3719"
},
{
"family_name": "Girardin",
"given_name": "E."
},
{
"family_name": "Laloum",
"given_name": "Didier"
},
{
"family_name": "Lewin",
"given_name": "Pablo",
"orcid": "0000-0003-0828-6368"
},
{
"family_name": "Mann",
"given_name": "Christopher R.",
"orcid": "0000-0002-9312-0073"
},
{
"family_name": "Marchis",
"given_name": "Franck",
"orcid": "0000-0001-7016-7277"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Srdoc",
"given_name": "Gregor"
},
{
"family_name": "Steuer",
"given_name": "Jana"
},
{
"family_name": "Sivarani",
"given_name": "Thirupathi"
},
{
"family_name": "Unni",
"given_name": "Athira"
},
{
"family_name": "Eisner",
"given_name": "Nora L.",
"orcid": "0000-0002-9138-9028"
},
{
"family_name": "Fetherolf",
"given_name": "Tara",
"orcid": "0000-0002-3551-279X"
},
{
"family_name": "Li",
"given_name": "Zhexing",
"orcid": "0000-0002-4860-7667"
},
{
"family_name": "Yao",
"given_name": "Xinyu",
"orcid": "0000-0003-4554-5592"
},
{
"family_name": "Pepper",
"given_name": "Joshua",
"orcid": "0000-0002-3827-8417"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Burke",
"given_name": "Christopher J.",
"orcid": "0000-0002-7754-9486"
},
{
"family_name": "Eastman",
"given_name": "Jason D.",
"orcid": "0000-0003-3773-5142"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "Rodriguez",
"given_name": "David R.",
"orcid": "0000-0003-1286-5231"
},
{
"family_name": "Rowden",
"given_name": "Pamela",
"orcid": "0000-0002-4829-7101"
},
{
"family_name": "Ting",
"given_name": "Eric B.",
"orcid": "0000-0002-8219-9505"
},
{
"family_name": "Villase\u00f1or",
"given_name": "Jesus Noel"
}
],
"abstract": "We report the discovery of TOI-2180 b, a 2.8 M_J giant planet orbiting a slightly evolved G5 host star. This planet transited only once in Cycle 2 of the primary Transiting Exoplanet Survey Satellite (TESS) mission. Citizen scientists identified the 24 hr single-transit event shortly after the data were released, allowing a Doppler monitoring campaign with the Automated Planet Finder telescope at Lick Observatory to begin promptly. The radial velocity observations refined the orbital period of TOI-2180 b to be 260.8 \u00b1 0.6 days, revealed an orbital eccentricity of 0.368 \u00b1 0.007, and discovered long-term acceleration from a more distant massive companion. We conducted ground-based photometry from 14 sites spread around the globe in an attempt to detect another transit. Although we did not make a clear transit detection, the nondetections improved the precision of the orbital period. We predict that TESS will likely detect another transit of TOI-2180 b in Sector 48 of its extended mission. We use giant planet structure models to retrieve the bulk heavy-element content of TOI-2180 b. When considered alongside other giant planets with orbital periods over 100 days, we find tentative evidence that the correlation between planet mass and metal enrichment relative to stellar is dependent on orbital properties. Single-transit discoveries like TOI-2180 b highlight the exciting potential of the TESS mission to find planets with long orbital periods and low irradiation fluxes despite the selection biases associated with the transit method.",
"doi": "10.3847/1538-3881/ac415b",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-02",
"series_number": "2",
"volume": "163",
"issue": "2",
"pages": "Art. No. 61"
},
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"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211130-215721917",
"type": "article",
"title": "HD 207897 b: A dense sub-Neptune transiting a nearby and bright K-type star",
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"abstract": "We present the discovery and characterization of a transiting sub-Neptune that orbits the nearby (28 pc) and bright (V = 8.37) K0V star HD 207897 (TOI-1611) with a 16.20-day period. This discovery is based on photometric measurements from the Transiting Exoplanet Survey Satellite mission and radial velocity (RV) observations from the SOPHIE, Automated Planet Finder, and HIRES high-precision spectrographs. We used EXOFASTv2 to model the parameters of the planet and its host star simultaneously, combining photometric and RV data to determine the planetary system parameters. We show that the planet has a radius of 2.50 \u00b1 0.08 R_E and a mass of either 14.4 \u00b1 1.6 M_E or 15.9 \u00b1 1.6 M_E with nearly equal probability. The two solutions correspond to two possibilities for the stellar activity period. The density accordingly is either 5.1 \u00b1 0.7 g cm\u207b\u00b3 or 5.5_(\u22120.7)^(+0.8) g cm\u207b\u00b3, making it one of the relatively rare dense sub-Neptunes. The existence of this dense planet at only 0.12 AU from its host star is unusual in the currently observed sub-Neptune (2 < R_E < 4) population. The most likely scenario is that this planet has migrated to its current position.",
"doi": "10.1051/0004-6361/202141429",
"issn": "0004-6361",
"publisher": "EDP Sciences",
"publication": "Astronomy and Astrophysics",
"publication_date": "2022-02",
"volume": "658",
"pages": "Art. No. A176"
},
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"type": "monograph",
"title": "TOI 560 : Two Transiting Planets Orbiting a K Dwarf Validated with iSHELL, PFS and HIRES RVs",
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"orcid": "0000-0003-2935-7196"
},
{
"family_name": "Johnson",
"given_name": "Marshall C.",
"orcid": "0000-0002-5099-8185"
},
{
"family_name": "Christiansen",
"given_name": "Jessie",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Kreidberg",
"given_name": "Laura",
"orcid": "0000-0003-0514-1147"
},
{
"family_name": "Werner",
"given_name": "Michael W.",
"orcid": "0000-0003-4990-189X",
"clpid": "Werner-Michael-W"
},
{
"family_name": "Berardo",
"given_name": "David Anthony",
"orcid": "0000-0001-6298-412X"
},
{
"family_name": "Deming",
"given_name": "Drake",
"orcid": "0000-0001-5727-4094"
},
{
"family_name": "Gorjian",
"given_name": "Varoujan",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
},
{
"family_name": "Morales",
"given_name": "Farisa Y.",
"orcid": "0000-0001-9414-3851",
"clpid": "Morales-Farisa-Y"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Wittenmyer",
"given_name": "Robert A.",
"orcid": "0000-0001-9957-9304"
},
{
"family_name": "Ballard",
"given_name": "Sarah",
"orcid": "0000-0002-3247-5081"
},
{
"family_name": "Bowler",
"given_name": "Brendan P.",
"orcid": "0000-0003-2649-2288"
},
{
"family_name": "Horner",
"given_name": "Jonathan",
"orcid": "0000-0002-1160-7970"
},
{
"family_name": "Kielkopf",
"given_name": "John",
"orcid": "0000-0003-0497-2651"
},
{
"family_name": "Liu",
"given_name": "Huigen",
"orcid": "0000-0001-5162-1753"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Tinney",
"given_name": "C. G.",
"orcid": "0000-0002-7595-0970"
},
{
"family_name": "Zhang",
"given_name": "Hui",
"orcid": "0000-0003-3491-6394"
},
{
"family_name": "Wright",
"given_name": "Duncan J.",
"orcid": "0000-0001-7294-5386"
},
{
"family_name": "Addison",
"given_name": "Brett C.",
"orcid": "0000-0003-3216-0626"
},
{
"family_name": "Mengel",
"given_name": "Matthew W.",
"orcid": "0000-0002-7830-6822"
},
{
"family_name": "Okumura",
"given_name": "Jack",
"orcid": "0000-0002-4876-8540"
}
],
"abstract": "We validate the presence of a two-planet system orbiting the 0.2--1.4 Gyr K4 dwarf TOI 560 (HD 73583). The system consists of an inner moderately eccentric transiting mini-Neptune (TOI 560 b, P = 6.397438 \u00b1 0.000037 days, e = 0.294^(0.13)_(0.062)) initially discovered in the Sector 8 TESS mission observations, and a transiting mini-Neptune (TOI 560 c, P = 18.8779 \u00b1 0.0016 days) discovered in the Sector 34 observations, in a rare 1:3 orbital resonance. We utilize photometric data from TESS Spitzer, and ground-based follow-up observations to confirm the ephemerides and period of the transiting planets and vet false positive scenarios. We obtain follow-up spectroscopy and corresponding precise radial velocities (RVs) with the iSHELL spectrograph at the NASA Infrared Telescope Facility and the HIRES Spectrograph at Keck Observatory to validate the planetary nature of these signals, which we combine with published PFS RVs from Magellan Observatory. We place upper limits on the masses of both planets of <2.1 and <4.1 M_(Nep) for b and c, respectively. We apply a Gaussian Processes (GP) model to the TESS light curves to place priors on a chromatic radial velocity GP model to constrain the stellar activity of the TOI 560 host star. TOI 560 is a nearby moderately young multi-planet system with two planets suitable for atmospheric characterization with James Webb Space Telescope (JWST) and other upcoming missions. In particular, it will undergo six transit pairs separated by <6 hours before June 2027.",
"doi": "10.48550/arXiv.2112.13448",
"publisher": "arXiv",
"publication_date": "2021-12-26"
},
{
"id": "authors:pq2ct-33n74",
"collection": "authors",
"collection_id": "pq2ct-33n74",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220113-234547933",
"type": "monograph",
"title": "The California Legacy Survey III. On The Shoulders of (Some) Giants: The Relationship between Inner Small Planets and Outer Massive Planets",
"author": [
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Chachan",
"given_name": "Yayaati",
"orcid": "0000-0003-1728-8269",
"clpid": "Chachan-Yayaati"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Crepp",
"given_name": "Justin R.",
"orcid": "0000-0003-0800-0593",
"clpid": "Crepp-Justin-R"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Henry",
"given_name": "Gregory W.",
"orcid": "0000-0003-4155-8513",
"clpid": "Henry-Gregory-W"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Wright",
"given_name": "Jason T.",
"orcid": "0000-0001-6160-5888",
"clpid": "Wright-Jason-T"
}
],
"abstract": "We use a high-precision radial velocity survey of FGKM stars to study the conditional occurrence of two classes of planets: close-in small planets (0.023--1 au, 2--30 M_\u2295) and distant giant planets (0.23--10 au, 30--6000 M_\u2295). We find that 41\u207a\u2075\u208b\u2081\u2083%) of systems with a close-in, small planet also host an outer giant, compared to 17.6^(+2.4)_(\u22121.9)% for stars irrespective of small planet presence. This implies that small planet hosts may be enhanced in outer giant occurrence compared to all stars with 1.7\u03c3 significance. Conversely, we estimate that 42\u207a\u00b9\u2077\u208b\u2081\u2083% of cold giant hosts also host an inner small planet, compared to 27.6^(+5.8)_(\u22124.8)% of stars irrespective of cold giant presence. We also find that more massive and close-in giant planets are not associated with small inner planets. Specifically, our sample indicates that small planets are less likely to host outer giant companions more massive than approximately 120 M_\u2295 and within 0.3--3 au than to host less massive or more distant giant companions, with \u223c2.2\u03c3 confidence. This implies that massive gas giants within 0.3--3 au may suppress inner small planet formation. Additionally, we compare the host-star metallicity distributions for systems with only small planets and those with both small planets and cold giants. In agreement with previous studies, we find that stars in our survey that only host small planets have a metallicity distribution that is consistent with the broader solar-metallicity-median sample, while stars that host both small planets and gas giants are distinctly metal-rich with \u223c2.3\u03c3 confidence.",
"doi": "10.48550/arXiv.2112.03399",
"publisher": "arXiv",
"publication_date": "2021-12-06"
},
{
"id": "authors:2772z-9pa73",
"collection": "authors",
"collection_id": "2772z-9pa73",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211018-185226948",
"type": "article",
"title": "Wolf 503 b: Characterization of a Sub-Neptune Orbiting a Metal-poor K Dwarf",
"author": [
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681",
"clpid": "Polanski-Alex-S"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Burt",
"given_name": "Jennifer A.",
"orcid": "0000-0002-0040-6815",
"clpid": "Burt-Jennifer-A"
},
{
"family_name": "Nowak",
"given_name": "Grzegorz",
"orcid": "0000-0002-7031-7754"
},
{
"family_name": "L\u00f3pez-Morales",
"given_name": "Mercedes",
"orcid": "0000-0003-3204-8183"
},
{
"family_name": "Mortier",
"given_name": "Annelies",
"orcid": "0000-0001-7254-4363"
},
{
"family_name": "Poretti",
"given_name": "Ennio",
"orcid": "0000-0003-1200-0473"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Bonomo",
"given_name": "Aldo S.",
"orcid": "0000-0002-6177-198X"
},
{
"family_name": "Butler",
"given_name": "R. Paul",
"orcid": "0000-0003-1305-3761"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Cosentino",
"given_name": "Rosario",
"orcid": "0000-0003-1784-1431"
},
{
"family_name": "Crane",
"given_name": "Jeffrey D.",
"orcid": "0000-0002-5226-787X"
},
{
"family_name": "Dumusque",
"given_name": "Xavier",
"orcid": "0000-0002-9332-2011"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Ghedina",
"given_name": "Adriano",
"orcid": "0000-0003-4702-5152"
},
{
"family_name": "Gorjian",
"given_name": "Varoujan",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
},
{
"family_name": "Grunblatt",
"given_name": "Samuel K.",
"orcid": "0000-0003-4976-9980"
},
{
"family_name": "Harutyunyan",
"given_name": "Avet"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Luque",
"given_name": "Rafael",
"orcid": "0000-0002-4671-2957"
},
{
"family_name": "Martinez Fiorenzano",
"given_name": "Aldo F.",
"orcid": "0000-0002-4272-4272"
},
{
"family_name": "Mayor",
"given_name": "Michel",
"orcid": "0000-0002-9352-5935"
},
{
"family_name": "Mills",
"given_name": "Sean M.",
"orcid": "0000-0002-4535-6241",
"clpid": "Mills-Sean-M"
},
{
"family_name": "Molinari",
"given_name": "Emilio",
"orcid": "0000-0002-1742-7735"
},
{
"family_name": "Nagel",
"given_name": "Evangelos",
"orcid": "0000-0002-4019-3631"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Shectman",
"given_name": "Stephen A.",
"orcid": "0000-0002-8681-6136"
},
{
"family_name": "Sozzetti",
"given_name": "Alessandro",
"orcid": "0000-0002-7504-365X"
},
{
"family_name": "Teske",
"given_name": "Johanna K."
},
{
"family_name": "Wang",
"given_name": "Sharon Xuesong",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
}
],
"abstract": "Using radial-velocity measurements from four instruments, we report the mass and density of a 2.043 \u00b10.069 R_\u2295 sub-Neptune orbiting the quiet K-dwarf Wolf 503 (HIP 67285). In addition, we present improved orbital and transit parameters by analyzing previously unused short-cadence K2 campaign 17 photometry and conduct a joint radial-velocity-transit fit to constrain the eccentricity at 0.41 \u00b1 0.05. The addition of a transit observation by Spitzer also allows us to refine the orbital ephemeris in anticipation of further follow-up. Our mass determination, 6.26^(+0.69)_(-0.70)M_\u2295 , in combination with the updated radius measurements, gives Wolf 503 b a bulk density of \u03c1 = 2.92^(+0.50)_(-0.44) g cm\u207b\u00b3. Using interior composition models, we find this density is consistent with an Earth-like core with either a substantial H\u2082O mass fraction (45^(+19)_(-16)%) or a modest H/He envelope (0.5% \u00b1 0.3%). The low H/He mass fraction, along with the old age of Wolf 503 (11 \u00b1 2 Gyr), makes this sub-Neptune an opportune subject for testing theories of XUV-driven mass loss while the brightness of its host (J = 8.3 mag) makes it an attractive target for transmission spectroscopy.",
"doi": "10.3847/1538-3881/ac1590",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-12",
"series_number": "6",
"volume": "162",
"issue": "6",
"pages": "Art. No. 238"
},
{
"id": "authors:awe8y-b5737",
"collection": "authors",
"collection_id": "awe8y-b5737",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211203-204701515",
"type": "article",
"title": "The TESS\u2013Keck Survey. VI. Two Eccentric Sub-Neptunes Orbiting HIP-97166",
"author": [
{
"family_name": "MacDougall",
"given_name": "Mason G.",
"orcid": "0000-0003-2562-9043",
"clpid": "MacDougall-Mason-G"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Angelo",
"given_name": "Isabel",
"orcid": "0000-0002-9751-2664"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Brinkman",
"given_name": "Casey",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Polanski",
"given_name": "Alex",
"orcid": "0000-0001-7047-8681"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280"
},
{
"family_name": "Turtelboom",
"given_name": "Emma"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Matthews",
"given_name": "Elisabeth",
"orcid": "0000-0003-0593-1560"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Vanderspek",
"given_name": "Roland K.",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Brasseur",
"given_name": "C. E.",
"orcid": "0000-0002-9314-960X"
},
{
"family_name": "Doty",
"given_name": "John",
"orcid": "0000-0003-2996-8421"
},
{
"family_name": "Fausnaugh",
"given_name": "Michael",
"orcid": "0000-0002-9113-7162"
},
{
"family_name": "Guerrero",
"given_name": "Natalia",
"orcid": "0000-0002-5169-9427"
},
{
"family_name": "Henze",
"given_name": "Chris"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
}
],
"abstract": "We report the discovery of HIP-97166b (TOI-1255b), a transiting sub-Neptune on a 10.3 day orbit around a K0 dwarf 68 pc from Earth. This planet was identified in a systematic search of TESS Objects of Interest for planets with eccentric orbits, based on a mismatch between the observed transit duration and the expected duration for a circular orbit. We confirmed the planetary nature of HIP-97166b with ground-based radial-velocity measurements and measured a mass of M_b = 20 \u00b1 2 M_\u2295 along with a radius of R_b = 2.7 \u00b1 0.1 R_\u2295 from photometry. We detected an additional nontransiting planetary companion with M_c sin i = 10 \u00b1 2 M_\u2295 on a 16.8 day orbit. While the short transit duration of the inner planet initially suggested a high eccentricity, a joint RV-photometry analysis revealed a high impact parameter b = 0.84 \u00b1 0.03 and a moderate eccentricity. Modeling the dynamics with the condition that the system remain stable over >10\u2075 orbits yielded eccentricity constraints e_b = 0.16 \u00b1 0.03 and e_c < 0.25. The eccentricity we find for planet b is above average for the small population of sub-Neptunes with well-measured eccentricities. We explored the plausible formation pathways of this system, proposing an early instability and merger event to explain the high density of the inner planet at 5.3 \u00b1 0.9 g cc\u207b\u00b9 as well as its moderate eccentricity and proximity to a 5:3 mean-motion resonance.",
"doi": "10.3847/1538-3881/ac295e",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-12",
"series_number": "6",
"volume": "162",
"issue": "6",
"pages": "Art. No. 265"
},
{
"id": "authors:gpmhz-e3h45",
"collection": "authors",
"collection_id": "gpmhz-e3h45",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211213-225010289",
"type": "article",
"title": "Diving Beneath the Sea of Stellar Activity: Chromatic Radial Velocities of the Young AU Mic Planetary System",
"author": [
{
"family_name": "Cale",
"given_name": "Bryson L.",
"orcid": "0000-0001-6279-0595",
"clpid": "Cale-Bryson-L"
},
{
"family_name": "Reefe",
"given_name": "Michael",
"orcid": "0000-0003-4701-8497"
},
{
"family_name": "Plavchan",
"given_name": "Peter",
"orcid": "0000-0002-8864-1667"
},
{
"family_name": "Tanner",
"given_name": "Angelle",
"orcid": "0000-0002-0786-7307"
},
{
"family_name": "Gaidos",
"given_name": "Eric",
"orcid": "0000-0002-5258-6846"
},
{
"family_name": "Gagn\u00e9",
"given_name": "Jonathan",
"orcid": "0000-0002-2592-9612"
},
{
"family_name": "Gao",
"given_name": "Peter",
"orcid": "0000-0002-8518-9601"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "B\u00e9jar",
"given_name": "V\u00edctor J. S.",
"orcid": "0000-0002-5086-4232"
},
{
"family_name": "Lodieu",
"given_name": "Nicolas",
"orcid": "0000-0002-3612-8968"
},
{
"family_name": "Anglada-Escud\u00e9",
"given_name": "Guillem",
"orcid": "0000-0002-3645-5977"
},
{
"family_name": "Ribas",
"given_name": "Ignasi",
"orcid": "0000-0002-6689-0312"
},
{
"family_name": "Pall\u00e9",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Quirrenbach",
"given_name": "Andreas",
"orcid": "0000-0002-8388-6040"
},
{
"family_name": "Reiners",
"given_name": "Ansgar",
"orcid": "0000-0003-1242-5922"
},
{
"family_name": "Caballero",
"given_name": "Jos\u00e9 A."
},
{
"family_name": "Zapatero Osorio",
"given_name": "Mar\u00eda Rosa",
"orcid": "0000-0001-5664-2852"
},
{
"family_name": "Dreizler",
"given_name": "Stefan",
"orcid": "0000-0001-6187-5941"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Wang",
"given_name": "Sharon Xuesong",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "El Mufti",
"given_name": "Mohammed",
"orcid": "0000-0001-8364-2903"
},
{
"family_name": "Wittrock",
"given_name": "Justin",
"orcid": "0000-0002-7424-9891"
},
{
"family_name": "Gilbert",
"given_name": "Emily A.",
"orcid": "0000-0002-0388-8004"
},
{
"family_name": "Barclay",
"given_name": "Thomas",
"orcid": "0000-0001-7139-2724"
},
{
"family_name": "Klein",
"given_name": "Baptiste",
"orcid": "0000-0003-0637-5236"
},
{
"family_name": "Martioli",
"given_name": "Eder",
"orcid": "0000-0002-5084-168X"
},
{
"family_name": "Wittenmyer",
"given_name": "Robert",
"orcid": "0000-0001-9957-9304"
},
{
"family_name": "Wright",
"given_name": "Duncan",
"orcid": "0000-0001-7294-5386"
},
{
"family_name": "Addison",
"given_name": "Brett",
"orcid": "0000-0003-3216-0626"
},
{
"family_name": "Hirano",
"given_name": "Teruyuki",
"orcid": "0000-0003-3618-7535"
},
{
"family_name": "Tamura",
"given_name": "Motohide",
"orcid": "0000-0002-6510-0681"
},
{
"family_name": "Kotani",
"given_name": "Takayuki",
"orcid": "0000-0001-6181-3142"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Vermilion",
"given_name": "David",
"orcid": "0000-0002-4501-564X"
},
{
"family_name": "Lee",
"given_name": "Rena A.",
"orcid": "0000-0001-7058-4134"
},
{
"family_name": "Geneser",
"given_name": "Claire",
"orcid": "0000-0001-9596-8820"
},
{
"family_name": "Teske",
"given_name": "Johanna"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Esquerdo",
"given_name": "Gilbert A.",
"orcid": "0000-0002-9789-5474"
},
{
"family_name": "Calkins",
"given_name": "Michael L.",
"orcid": "0000-0002-2830-5661"
},
{
"family_name": "Berlind",
"given_name": "Perry"
},
{
"family_name": "Zohrabi",
"given_name": "Farzaneh",
"orcid": "0000-0003-2872-9883"
},
{
"family_name": "Stibbards",
"given_name": "Caitlin",
"orcid": "0000-0003-0091-3769"
},
{
"family_name": "Kotnana",
"given_name": "Srihan"
},
{
"family_name": "Jenkins",
"given_name": "Jon",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Henze",
"given_name": "Christopher"
},
{
"family_name": "Kidwell",
"given_name": "Richard C., Jr."
},
{
"family_name": "Burke",
"given_name": "Christopher",
"orcid": "0000-0002-7754-9486"
},
{
"family_name": "Villasenor",
"given_name": "Joel"
},
{
"family_name": "Boyd",
"given_name": "Patricia",
"orcid": "0000-0003-0442-4284"
}
],
"abstract": "We present updated radial-velocity (RV) analyses of the AU Mic system. AU Mic is a young (22 Myr) early-M dwarf known to host two transiting planets\u2014P_b \u223c 8.46 days, R_b = 4.38^(+0.18)_(\u22120.18) R\u2295, P_c \u223c 18.86 days, R_c = 3.51^(+0.16)_(\u22120.16) R\u2295. With visible RVs from Calar Alto high-Resolution search for M dwarfs with Exo-earths with Near-infrared and optical echelle Spectrographs (CARMENES)-VIS, CHIRON, HARPS, HIRES, MINERVA-Australis, and Tillinghast Reflector Echelle Spectrograph, as well as near-infrared (NIR) RVs from CARMENES-NIR, CSHELL, IRD, iSHELL, NIRSPEC, and SPIRou, we provide a 5\u03c3 upper limit to the mass of AU Mic c of M_c \u2264 20.13 M_\u2295 and present a refined mass of AU Mic b of M_b = 20.12^(+1.72)_(\u22121.57) M_\u2295. Used in our analyses is a new RV modeling toolkit to exploit the wavelength dependence of stellar activity present in our RVs via wavelength-dependent Gaussian processes. By obtaining near-simultaneous visible and near-infrared RVs, we also compute the temporal evolution of RV \"color\" and introduce a regressional method to aid in isolating Keplerian from stellar activity signals when modeling RVs in future works. Using a multiwavelength Gaussian process model, we demonstrate the ability to recover injected planets at 5\u03c3 significance with semi-amplitudes down to \u224810 m s\u207b\u00b9 with a known ephemeris, more than an order of magnitude below the stellar activity amplitude. However, we find that the accuracy of the recovered semi-amplitudes is \u223c50% for such signals with our model.",
"doi": "10.3847/1538-3881/ac2c80",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-12",
"series_number": "6",
"volume": "162",
"issue": "6",
"pages": "Art. No. 295"
},
{
"id": "authors:w75ta-evs55",
"collection": "authors",
"collection_id": "w75ta-evs55",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211214-988506000",
"type": "article",
"title": "Another Superdense Sub-Neptune in K2-182 b and Refined Mass Measurements for K2-199 b and c",
"author": [
{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284",
"clpid": "Akana-Murphy-Joseph-M"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359",
"clpid": "Kosiarek-Molly-R"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519",
"clpid": "Batalha-Natalie-M"
},
{
"family_name": "Gonzales",
"given_name": "Erica J.",
"orcid": "0000-0002-9329-2190",
"clpid": "Gonzales-Erica-J"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Grunblatt",
"given_name": "Samuel K.",
"orcid": "0000-0003-4976-9980",
"clpid": "Grunblatt-Samuel-K"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443",
"clpid": "Hirsch-Lea-A"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
}
],
"abstract": "We combine multiple campaigns of K2 photometry with precision radial velocity measurements from Keck-HIRES to measure the masses of three sub-Neptune-sized planets. We confirm the planetary nature of the massive sub-Neptune K2-182 b (P_b = 4.7 days, R_b = 2.69 R_\u2295) and derive refined parameters for K2-199 b and c (P_b = 3.2 days, R_b = 1.73 R_\u2295 and P_c = 7.4 days, R_c = 2.85 R_\u2295). These planets provide valuable data points in the mass\u2013radius plane, especially as TESS continues to reveal an increasingly diverse sample of sub-Neptunes. The moderately bright (V = 12.0 mag) early K dwarf K2-182 (EPIC 211359660) was observed during K2 campaigns 5 and 18. We find that K2-182 b is potentially one of the densest sub-Neptunes known to date (20 \u00b1 5 M_\u2295 and 5.6 \u00b1 1.4 g cm\u207b\u00b3). The K5V dwarf K2-199 (EPIC 212779596; V = 12.3 mag), observed in K2 campaigns 6 and 17, hosts two recently confirmed planets. We refine the orbital and planetary parameters for K2-199 b and c by modeling both campaigns of K2 photometry and adding 12 Keck-HIRES measurements to the existing radial velocity data set (N = 33). We find that K2-199 b is likely rocky, at 6.9 \u00b1 1.8 M_\u2295 and 7.2_(-2.0)^(+2.1) g cm\u207b\u00b3, and that K2-199 c has an intermediate density at 12.4 \u00b1 2.3 M_\u2295 and 2.9_(-0.6)^(+0.7) g cm\u207b\u00b3. We contextualize these planets on the mass\u2013radius plane, discuss a small but intriguing population of \"superdense\" sub-Neptunes (R_p < 3 R_\u2295, M_p >20 M_\u2295), and consider our prospects for the planets' atmospheric characterization.",
"doi": "10.3847/1538-3881/ac2830",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-12",
"series_number": "6",
"volume": "162",
"issue": "6",
"pages": "Art. No. 294"
},
{
"id": "authors:d02xb-dr566",
"collection": "authors",
"collection_id": "d02xb-dr566",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211006-173902527",
"type": "article",
"title": "V488 Per Revisited: No Strong Mid-infrared Emission Features and No Evidence for Stellar/substellar Companions",
"author": [
{
"family_name": "Sankar",
"given_name": "Swetha",
"orcid": "0000-0002-4419-8325",
"clpid": "Sankar-Swetha"
},
{
"family_name": "Melis",
"given_name": "Carl",
"orcid": "0000-0001-9834-7579",
"clpid": "Melis-Carl"
},
{
"family_name": "Klein",
"given_name": "Beth L.",
"orcid": "0000-0001-5854-675X",
"clpid": "Klein-Beth-L"
},
{
"family_name": "Fulton",
"given_name": "B. J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Zuckerman",
"given_name": "B.",
"orcid": "0000-0001-6809-3045",
"clpid": "Zuckerman-Benjamin"
},
{
"family_name": "Song",
"given_name": "Inseok",
"orcid": "0000-0002-5815-7372",
"clpid": "Song-Inseok"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
}
],
"abstract": "We present characterization of the planetary system architecture for V488 Per, the dustiest main sequence star known with a fractional infrared luminosity of ~16%. Far-infrared imaging photometry confirms the existence of an outer planetary system dust population with blackbody-fit temperature of ~130 K. Mid-infrared spectroscopy probing the previously-identified ~800 K inner planetary system dust population does not detect any obvious solid-state emission features, suggesting either large grain sizes that mute such emission and/or grain compositions dominated by species like amorphous carbon and metallic iron which do not produce such features. In the latter case, the presence of significant quantities of iron-rich material could be indicative of the active formation of a Mercury-like planet around V488 Per. In any event, the absence of solid-state emission features is very unusual among main sequence stars with copious amounts of warm orbiting dust particles; we know of no other such star whose mid-infrared spectrum lacks such features. Combined radial velocity monitoring and adaptive optics imaging find no evidence for stellar/sub-stellar companions within several hundred AU of V488 Per.",
"doi": "10.3847/1538-4357/ac19a8",
"issn": "0004-637X",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal",
"publication_date": "2021-11-20",
"series_number": "1",
"volume": "922",
"issue": "1",
"pages": "Art. No. 75"
},
{
"id": "authors:60cqz-ktt50",
"collection": "authors",
"collection_id": "60cqz-ktt50",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211116-150145338",
"type": "article",
"title": "TESS-Keck Survey. V. Twin Sub-Neptunes Transiting the Nearby G Star HD 63935",
"author": [
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280",
"clpid": "Scarsdale-Nicholas"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Claytor",
"given_name": "Zachary R.",
"orcid": "0000-0002-9879-3904"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Fetherolf",
"given_name": "Tara",
"orcid": "0000-0002-3551-279X"
},
{
"family_name": "Fukui",
"given_name": "Akihiko",
"orcid": "0000-0002-4909-5763"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Gonzales",
"given_name": "Erica J.",
"orcid": "0000-0002-9329-2190"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443"
},
{
"family_name": "Jensen",
"given_name": "Eric L. N.",
"orcid": "0000-0002-4625-7333"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "de Leon",
"given_name": "Jerome P.",
"orcid": "0000-0002-6424-3410"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "Luque",
"given_name": "Rafael",
"orcid": "0000-0002-4671-2957"
},
{
"family_name": "Mayo",
"given_name": "Andrew W.",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Mori",
"given_name": "Mayuko",
"orcid": "0000-0003-1368-6593"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Nowak",
"given_name": "Grzegorz",
"orcid": "0000-0002-7031-7754"
},
{
"family_name": "Pall\u00e9",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Rabus",
"given_name": "Markus",
"orcid": "0000-0003-2935-7196"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Twicken",
"given_name": "Joe",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Wang",
"given_name": "Gavin",
"orcid": "0000-0003-3092-4418"
},
{
"family_name": "Yahalomi",
"given_name": "Daniel A.",
"orcid": "0000-0003-4755-584X"
},
{
"family_name": "Jenkins",
"given_name": "Jon",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "We present the discovery of two nearly identically sized sub-Neptune transiting planets orbiting HD 63935, a bright (V = 8.6 mag), Sun-like (T_(eff) = 5560 K) star at 49 pc. TESS identified the first planet, HD 63935 b (TOI-509.01), in Sectors 7 and 34. We identified the second signal (HD 63935 c) in Keck High Resolution Echelle Spectrometer and Lick Automated Planet Finder radial velocity data as part of our follow-up campaign. It was subsequently confirmed with TESS photometry in Sector 34 as TOI-509.02. Our analysis of the photometric and radial velocity data yielded a robust detection of both planets with periods of 9.0600 \u00b1 0.007 and 21.40 \u00b1 0.0019 days, radii of 2.99 \u00b1 0.14 and 2.90 \u00b1 0.13 R\u2295, and masses of 10.8 \u00b1 1.8 and 11.1 \u00b1 2.4 M_\u2295. We calculated densities for planets b and c consistent with a few percent of the planet mass in hydrogen/helium envelopes. We also describe our survey's efforts to choose the best targets for James Webb Space Telescope atmospheric follow-up. These efforts suggest that HD 63935 b has the most clearly visible atmosphere of its class. It is the best target for transmission spectroscopy (ranked by the transmission spectroscopy metric, a proxy for atmospheric observability) in the so far uncharacterized parameter space comprising sub-Neptune-sized (2.6 R_\u2295 < R_p < 4 R_\u2295), moderately irradiated (100 F_\u2295 < F_p < 1000 F_\u2295) planets around G stars. Planet c is also a viable target for transmission spectroscopy, and given the indistinguishable masses and radii of the two planets, the system serves as a natural laboratory for examining the processes that shape the evolution of sub-Neptune planets.",
"doi": "10.3847/1538-3881/ac18cb",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-11",
"series_number": "5",
"volume": "162",
"issue": "5",
"pages": "Art. No. 215"
},
{
"id": "authors:wc19g-pvw25",
"collection": "authors",
"collection_id": "wc19g-pvw25",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211012-211826814",
"type": "article",
"title": "Constraining the Orbit and Mass of epsilon Eridani b with Radial Velocities, Hipparcos IAD-Gaia DR2 Astrometry, and Multiepoch Vortex Coronagraphy Upper Limits",
"author": [
{
"family_name": "Llop-Sayson",
"given_name": "Jorge",
"orcid": "0000-0002-3414-784X",
"clpid": "Llop-Sayson-Jorge"
},
{
"family_name": "Wang",
"given_name": "Jason J.",
"orcid": "0000-0003-0774-6502",
"clpid": "Wang-Jason-J"
},
{
"family_name": "Ruffio",
"given_name": "Jean-Baptiste",
"orcid": "0000-0003-2233-4821",
"clpid": "Ruffio-Jean-Baptiste"
},
{
"family_name": "Mawet",
"given_name": "Dimitri",
"orcid": "0000-0002-8895-4735",
"clpid": "Mawet-D"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Absil",
"given_name": "Olivier",
"orcid": "0000-0002-4006-6237"
},
{
"family_name": "Bond",
"given_name": "Charlotte"
},
{
"family_name": "Brinkman",
"given_name": "Casey",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Bowler",
"given_name": "Brendan P.",
"orcid": "0000-0003-2649-2288"
},
{
"family_name": "Bottom",
"given_name": "Michael",
"orcid": "0000-0003-1341-5531"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Fulton",
"given_name": "B. J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Karlsson",
"given_name": "Mikael",
"orcid": "0000-0002-2011-0851"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Madurowicz",
"given_name": "Alex"
},
{
"family_name": "Matthews",
"given_name": "Keith",
"clpid": "Matthews-Keith-Astronomy"
},
{
"family_name": "Morris",
"given_name": "Evan"
},
{
"family_name": "Perrin",
"given_name": "Marshall",
"orcid": "0000-0002-3191-8151"
},
{
"family_name": "Ren",
"given_name": "Bin",
"orcid": "0000-0003-1698-9696",
"clpid": "Ren-Bin"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Ruane",
"given_name": "Garreth",
"orcid": "0000-0003-4769-1665",
"clpid": "Ruane-Garreth-J"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Sun",
"given_name": "He",
"orcid": "0000-0003-1526-6787",
"clpid": "Sun-He"
},
{
"family_name": "Wallack",
"given_name": "Nicole",
"orcid": "0000-0003-0354-0187",
"clpid": "Wallack-Nicole-L"
},
{
"family_name": "Xuan",
"given_name": "Jerry W.",
"orcid": "0000-0002-6618-1137",
"clpid": "Xuan-Jerry-W"
},
{
"family_name": "Ygouf",
"given_name": "Marie",
"orcid": "0000-0001-7591-2731",
"clpid": "Ygouf-Marie"
}
],
"abstract": "\u03b5 Eridani is a young planetary system hosting a complex multibelt debris disk and a confirmed Jupiter-like planet orbiting at 3.48 au from its host star. Its age and architecture are thus reminiscent of the early Solar System. The most recent study of Mawet et al., which combined radial-velocity data and Ms-band direct imaging upper limits, started to constrain the planet's orbital parameters and mass, but are still affected by large error bars and degeneracies. Here we make use of the most recent data compilation from three different techniques to further refine epsilon Eridani b's properties: RVs, absolute astrometry measurements from the Hipparcos and Gaia missions, and new Keck/NIRC2 Ms-band vortex coronagraph images. We combine this data in a Bayesian framework. We find a new mass, M_b = 0.66_(-0.09)^(+0.12) MJup, and inclination, i = 78.81_(-22.41)^(+29.34), with at least a factor 2 of improvement over previous uncertainties. We also report updated constraints on the longitude of the ascending node, the argument of the periastron, and the time of periastron passage. With these updated parameters, we can better predict the position of the planet at any past and future epoch, which can greatly help define the strategy and planning of future observations and with subsequent data analysis. In particular, these results can assist the search for a direct detection with JWST and the Nancy Grace Roman Space Telescope's coronagraph instrument.",
"doi": "10.3847/1538-3881/ac134a",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-11",
"series_number": "5",
"volume": "162",
"issue": "5",
"pages": "Art. No. 181"
},
{
"id": "authors:4sg4k-jqc47",
"collection": "authors",
"collection_id": "4sg4k-jqc47",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211115-234332784",
"type": "article",
"title": "Asteroseismology of iota Draconis and Discovery of an Additional Long-period Companion",
"author": [
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756",
"clpid": "Hill-Michelle-L"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Campante",
"given_name": "Tiago L.",
"orcid": "0000-0002-4588-5389"
},
{
"family_name": "Li",
"given_name": "Zhexing",
"orcid": "0000-0002-4860-7667"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Brandt",
"given_name": "Timothy D.",
"orcid": "0000-0003-2630-8073"
},
{
"family_name": "White",
"given_name": "Timothy R.",
"orcid": "0000-0002-6980-3392"
},
{
"family_name": "Pope",
"given_name": "Benjamin J. S.",
"orcid": "0000-0003-2595-9114"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Corsaro",
"given_name": "Enrico",
"orcid": "0000-0001-8835-2075"
},
{
"family_name": "Li",
"given_name": "Tanda",
"orcid": "0000-0001-6396-2563"
},
{
"family_name": "Ong",
"given_name": "J. M. Joel",
"orcid": "0000-0001-7664-648X"
},
{
"family_name": "Bedding",
"given_name": "Timothy R.",
"orcid": "0000-0001-5222-4661"
},
{
"family_name": "Bossini",
"given_name": "Diego",
"orcid": "0000-0002-9480-8400"
},
{
"family_name": "Buzasi",
"given_name": "Derek L.",
"orcid": "0000-0002-1988-143X"
},
{
"family_name": "Chaplin",
"given_name": "William J.",
"orcid": "0000-0002-5714-8618"
},
{
"family_name": "Cunha",
"given_name": "Margarida S.",
"orcid": "0000-0001-8237-7343"
},
{
"family_name": "Garc\u00eda",
"given_name": "Rafael A.",
"orcid": "0000-0002-8854-3776"
},
{
"family_name": "Breton",
"given_name": "Sylvain N.",
"orcid": "0000-0003-0377-0740"
},
{
"family_name": "Hon",
"given_name": "Marc",
"orcid": "0000-0003-2400-6960"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Jiang",
"given_name": "Chen",
"orcid": "0000-0002-7614-1665"
},
{
"family_name": "Kayhan",
"given_name": "Cenk",
"orcid": "0000-0001-9198-2289"
},
{
"family_name": "Kuszlewicz",
"given_name": "James S.",
"orcid": "0000-0002-3322-5279"
},
{
"family_name": "Mathur",
"given_name": "Savita",
"orcid": "0000-0002-0129-0316"
},
{
"family_name": "Serenelli",
"given_name": "Aldo",
"orcid": "0000-0001-6359-2769"
},
{
"family_name": "Stello",
"given_name": "Dennis",
"orcid": "0000-0002-4879-3519"
}
],
"abstract": "Giant stars as known exoplanet hosts are relatively rare due to the potential challenges in acquiring precision radial velocities and the small predicted transit depths. However, these giant host stars are also some of the brightest in the sky and so enable high signal-to-noise ratio follow-up measurements. Here, we report on new observations of the bright (V \u223c 3.3) giant star \u03b9 Draconis (\u03b9 Dra), known to host a planet in a highly eccentric \u223c511 day period orbit. TESS observations of the star over 137 days reveal asteroseismic signatures, allowing us to constrain the stellar radius, mass, and age to \u223c2%, \u223c6%, and \u223c28%, respectively. We present the results of continued radial-velocity monitoring of the star using the Automated Planet Finder over several orbits of the planet. We provide more precise planet parameters of the known planet and, through the combination of our radial-velocity measurements with Hipparcos and Gaia astrometry, we discover an additional long-period companion with an orbital period of ~68\u207a\u2076\u2070\u208b\u2083\u2086 yr. Mass predictions from our analysis place this substellar companion on the border of the planet and brown dwarf regimes. The bright nature of the star combined with the revised orbital architecture of the system provides an opportunity to study planetary orbital dynamics that evolve as the star moves into the giant phase of its evolution.",
"doi": "10.3847/1538-3881/ac1b31",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-11",
"series_number": "5",
"volume": "162",
"issue": "5",
"pages": "Art. No. 211"
},
{
"id": "authors:xffzz-k4903",
"collection": "authors",
"collection_id": "xffzz-k4903",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211008-175558303",
"type": "article",
"title": "TOI-431/HIP 26013: a super-Earth and a sub-Neptune transiting a bright, early K dwarf, with a third RV planet",
"author": [
{
"family_name": "Osborn",
"given_name": "Ares",
"orcid": "0000-0002-5899-7750",
"clpid": "Osborn-Ares"
},
{
"family_name": "Armstrong",
"given_name": "David J.",
"orcid": "0000-0002-5080-4117"
},
{
"family_name": "Cale",
"given_name": "Bryson",
"orcid": "0000-0001-6279-0595"
},
{
"family_name": "Brahm",
"given_name": "Rafael",
"orcid": "0000-0002-9158-7315"
},
{
"family_name": "Wittenmyer",
"given_name": "Robert A.",
"orcid": "0000-0001-9957-9304"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Bryant",
"given_name": "Edward M."
},
{
"family_name": "Adibekyan",
"given_name": "Vardan"
},
{
"family_name": "Cloutier",
"given_name": "Ryan",
"orcid": "0000-0001-5383-9393"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Delgado\u00a0Mena",
"given_name": "E."
},
{
"family_name": "Fridlund",
"given_name": "Malcolm",
"orcid": "0000-0003-2180-9936"
},
{
"family_name": "Hellier",
"given_name": "Coel",
"orcid": "0000-0002-3439-1439"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "King",
"given_name": "George W.",
"orcid": "0000-0002-3641-6636"
},
{
"family_name": "Lillo-Box",
"given_name": "Jorge",
"orcid": "0000-0003-3742-1987"
},
{
"family_name": "Otegi",
"given_name": "Jon"
},
{
"family_name": "Sousa",
"given_name": "S.",
"orcid": "0000-0001-9047-2965"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Matthews",
"given_name": "Elisabeth C.",
"orcid": "0000-0003-0593-1560"
},
{
"family_name": "Ziegler",
"given_name": "Carl",
"orcid": "0000-0002-0619-7639"
},
{
"family_name": "Ricker",
"given_name": "George",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Acton",
"given_name": "Jack S.",
"orcid": "0000-0002-1860-7842"
},
{
"family_name": "Addison",
"given_name": "Brett C.",
"orcid": "0000-0003-3216-0626"
},
{
"family_name": "Anderson",
"given_name": "David R.",
"orcid": "0000-0001-7416-7522"
},
{
"family_name": "Ballard",
"given_name": "Sarah",
"orcid": "0000-0002-3247-5081"
},
{
"family_name": "Barrado",
"given_name": "David",
"orcid": "0000-0002-5971-9242"
},
{
"family_name": "Barros",
"given_name": "Susana C. C."
},
{
"family_name": "Batalha",
"given_name": "Natalie",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Bayliss",
"given_name": "Daniel",
"orcid": "0000-0001-6023-1335"
},
{
"family_name": "Barclay",
"given_name": "Thomas",
"orcid": "0000-0001-7139-2724"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498"
},
{
"family_name": "Berberian",
"given_name": "John"
},
{
"family_name": "Bouchy",
"given_name": "Francois",
"orcid": "0000-0002-7613-393X"
},
{
"family_name": "Bowler",
"given_name": "Brendan P.",
"orcid": "0000-0003-2649-2288"
},
{
"family_name": "Brice\u00f1o",
"given_name": "C\u00e9sar",
"orcid": "0000-0001-7124-4094"
},
{
"family_name": "Burke",
"given_name": "Christopher J.",
"orcid": "0000-0002-7754-9486"
},
{
"family_name": "Burleigh",
"given_name": "Matthew R.",
"orcid": "0000-0003-0684-7803"
},
{
"family_name": "Casewell",
"given_name": "Sarah L.",
"orcid": "0000-0003-2478-0120"
},
{
"family_name": "Ciardi",
"given_name": "David",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Cooke",
"given_name": "Benjamin F."
},
{
"family_name": "Demangeon",
"given_name": "Olivier D. S.",
"orcid": "0000-0001-7918-0355"
},
{
"family_name": "D\u00edaz",
"given_name": "Rodrigo F.",
"orcid": "0000-0001-9289-5160"
},
{
"family_name": "Dorn",
"given_name": "C.",
"orcid": "0000-0001-6516-2586"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Dumusque",
"given_name": "Xavier",
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{
"family_name": "Espinoza",
"given_name": "N\u00e9stor",
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{
"family_name": "Figueira",
"given_name": "P."
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{
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{
"family_name": "Furlan",
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"orcid": "0000-0001-9800-6248",
"clpid": "Furlan-Elise"
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{
"family_name": "Gaidos",
"given_name": "E.",
"orcid": "0000-0002-5258-6846"
},
{
"family_name": "Geneser",
"given_name": "C."
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{
"family_name": "Gill",
"given_name": "Samuel",
"orcid": "0000-0002-4259-0155"
},
{
"family_name": "Goad",
"given_name": "Michael R.",
"orcid": "0000-0002-2908-7360"
},
{
"family_name": "Gonzales",
"given_name": "Erica J.",
"orcid": "0000-0002-9329-2190"
},
{
"family_name": "Gorjian",
"given_name": "Varoujan",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
},
{
"family_name": "G\u00fcnther",
"given_name": "Maximilian N.",
"orcid": "0000-0002-3164-9086"
},
{
"family_name": "Helled",
"given_name": "Ravit",
"orcid": "0000-0001-5555-2652"
},
{
"family_name": "Henderson",
"given_name": "Beth A."
},
{
"family_name": "Henning",
"given_name": "Thomas",
"orcid": "0000-0002-1493-300X"
},
{
"family_name": "Hogan",
"given_name": "Aleisha",
"orcid": "0000-0001-9658-1767"
},
{
"family_name": "Hojjatpanah",
"given_name": "Saeed"
},
{
"family_name": "Horner",
"given_name": "Jonathan",
"orcid": "0000-0002-1160-7970"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Hoyer",
"given_name": "Sergio"
},
{
"family_name": "Huber",
"given_name": "Dan",
"orcid": "0000-0001-8832-4488"
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{
"family_name": "Isaacson",
"given_name": "Howard",
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{
"family_name": "Jenkins",
"given_name": "James",
"orcid": "0000-0003-2733-8725"
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{
"family_name": "Jensen",
"given_name": "Eric L. N.",
"orcid": "0000-0002-4625-7333"
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{
"family_name": "Jord\u00e1n",
"given_name": "Andr\u00e9s",
"orcid": "0000-0002-5389-3944"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Kidwell",
"given_name": "Richard C."
},
{
"family_name": "Kielkopf",
"given_name": "John",
"orcid": "0000-0003-0497-2651"
},
{
"family_name": "Law",
"given_name": "Nicholas",
"orcid": "0000-0001-9380-6457"
},
{
"family_name": "Lendl",
"given_name": "Monika"
},
{
"family_name": "Lund",
"given_name": "M.",
"orcid": "0000-0003-2527-1598"
},
{
"family_name": "Matson",
"given_name": "Rachel A.",
"orcid": "0000-0001-7233-7508"
},
{
"family_name": "Mann",
"given_name": "Andrew W.",
"orcid": "0000-0003-3654-1602"
},
{
"family_name": "McCormac",
"given_name": "James",
"orcid": "0000-0003-1631-4170"
},
{
"family_name": "Mengel",
"given_name": "Matthew W.",
"orcid": "0000-0002-7830-6822"
},
{
"family_name": "Morales",
"given_name": "Farisa Y.",
"orcid": "0000-0001-9414-3851",
"clpid": "Morales-Farisa-Y"
},
{
"family_name": "Nielsen",
"given_name": "Louise D.",
"orcid": "0000-0002-5254-2499"
},
{
"family_name": "Okumura",
"given_name": "Jack",
"orcid": "0000-0002-4876-8540"
},
{
"family_name": "Osborn",
"given_name": "Hugh P.",
"orcid": "0000-0002-4047-4724"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
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{
"family_name": "Plavchan",
"given_name": "Peter",
"orcid": "0000-0002-8864-1667"
},
{
"family_name": "Pollacco",
"given_name": "Don",
"orcid": "0000-0001-9850-9697"
},
{
"family_name": "Quintana",
"given_name": "Elisa V.",
"orcid": "0000-0003-1309-2904"
},
{
"family_name": "Raynard",
"given_name": "Liam",
"orcid": "0000-0001-6472-9122"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Rose",
"given_name": "Mark E.",
"orcid": "0000-0003-4724-745X"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775",
"clpid": "Roy-Arpita"
},
{
"family_name": "Reefe",
"given_name": "Michael"
},
{
"family_name": "Santerne",
"given_name": "Alexandre",
"orcid": "0000-0002-3586-1316"
},
{
"family_name": "Santos",
"given_name": "Nuno C.",
"orcid": "0000-0003-4422-2919"
},
{
"family_name": "Sarkis",
"given_name": "Paula",
"orcid": "0000-0001-8128-3126"
},
{
"family_name": "Schlieder",
"given_name": "J.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Scott",
"given_name": "Nicholas J.",
"orcid": "0000-0003-1038-9702"
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{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
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{
"family_name": "Smith",
"given_name": "A. M. S."
},
{
"family_name": "Stibbard",
"given_name": "C."
},
{
"family_name": "Stockdale",
"given_name": "Chris",
"orcid": "0000-0003-2163-1437"
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{
"family_name": "Str\u00f8m",
"given_name": "Paul A."
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{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
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{
"family_name": "Tan",
"given_name": "Thiam-Guan",
"orcid": "0000-0001-5603-6895"
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{
"family_name": "Tanner",
"given_name": "A.",
"orcid": "0000-0002-2903-2140"
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{
"family_name": "Teske",
"given_name": "J."
},
{
"family_name": "Tilbrook",
"given_name": "Rosanna H."
},
{
"family_name": "Tinney",
"given_name": "C. G.",
"orcid": "0000-0002-7595-0970"
},
{
"family_name": "Udry",
"given_name": "St\u00e9phane",
"orcid": "0000-0001-7576-6236"
},
{
"family_name": "Villase\u00f1or",
"given_name": "Jesus Noel"
},
{
"family_name": "Vines",
"given_name": "Jose I.",
"orcid": "0000-0002-1896-2377"
},
{
"family_name": "Wang",
"given_name": "Sharon X.",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "West",
"given_name": "Richard G.",
"orcid": "0000-0001-6604-5533"
},
{
"family_name": "Wheatley",
"given_name": "Peter J.",
"orcid": "0000-0003-1452-2240"
},
{
"family_name": "Wright",
"given_name": "Duncan J.",
"orcid": "0000-0001-7294-5386"
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{
"family_name": "Zhang",
"given_name": "Hui",
"orcid": "0000-0003-3491-6394"
},
{
"family_name": "Zohrabi",
"given_name": "F."
}
],
"abstract": "We present the bright (V_(mag) = 9.12), multiplanet system TOI-431, characterized with photometry and radial velocities (RVs). We estimate the stellar rotation period to be 30.5 \u00b1 0.7 d using archival photometry and RVs. Transiting Exoplanet Survey Satellite (TESS) objects of Interest (TOI)-431\u2009b is a super-Earth with a period of 0.49 d, a radius of 1.28 \u00b1 0.04 R\u2295, a mass of 3.07 \u00b1 0.35 M\u2295, and a density of 8.0 \u00b1 1.0 g cm\u207b\u00b3; TOI-431 d is a sub-Neptune with a period of 12.46 d, a radius of 3.29 \u00b1 0.09 R_\u2295, a mass of 9.90^(+1.53)_(\u22121.49) M_\u2295, and a density of 1.36 \u00b1 0.25 g cm\u207b\u00b3. We find a third planet, TOI-431\u2009c, in the High Accuracy Radial velocity Planet Searcher RV data, but it is not seen to transit in the TESS light curves. It has an Msin i of 2.83^(+0.41)_(\u22120.34) M_\u2295, and a period of 4.85 d. TOI-431\u2009d likely has an extended atmosphere and is one of the most well-suited TESS discoveries for atmospheric characterization, while the super-Earth TOI-431\u2009b may be a stripped core. These planets straddle the radius gap, presenting an interesting case-study for atmospheric evolution, and TOI-431\u2009b is a prime TESS discovery for the study of rocky planet phase curves.",
"doi": "10.1093/mnras/stab2313",
"issn": "0035-8711",
"publisher": "Royal Astronomical Society",
"publication": "Monthly Notices of the Royal Astronomical Society",
"publication_date": "2021-10",
"series_number": "2",
"volume": "507",
"issue": "2",
"pages": "2782-2803"
},
{
"id": "authors:m4v86-zpv85",
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"collection_id": "m4v86-zpv85",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211008-224604210",
"type": "article",
"title": "Giant Outer Transiting Exoplanet Mass (GOT 'EM) Survey. II. Discovery of a Failed Hot Jupiter on a 2.7 Yr, Highly Eccentric Orbit",
"author": [
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Li",
"given_name": "Zhexing",
"orcid": "0000-0002-4860-7667",
"clpid": "Li-Zhexing"
},
{
"family_name": "MacDougall",
"given_name": "Mason G.",
"orcid": "0000-0003-2562-9043",
"clpid": "MacDougall-Mason-G"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Cherubim",
"given_name": "Collin",
"orcid": "0000-0002-8466-5469",
"clpid": "Cherubim-Collin"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Thorngren",
"given_name": "Daniel P.",
"orcid": "0000-0002-5113-8558",
"clpid": "Thorngren-Daniel-P"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Schwieterman",
"given_name": "Edward W.",
"orcid": "0000-0002-2949-2163",
"clpid": "Schwieterman-Edward-W"
},
{
"family_name": "Peluso",
"given_name": "Dan O.",
"orcid": "0000-0002-9427-0014",
"clpid": "Peluso-Dan-O"
},
{
"family_name": "Esposito",
"given_name": "Thomas M.",
"orcid": "0000-0002-0792-3719",
"clpid": "Esposito-Thomas-M"
},
{
"family_name": "Marchis",
"given_name": "Franck",
"orcid": "0000-0001-7016-7277",
"clpid": "Marchis-Franck"
},
{
"family_name": "Payne",
"given_name": "Matthew J.",
"orcid": "0000-0001-5133-6303",
"clpid": "Payne-Matthew-J"
}
],
"abstract": "Radial velocity (RV) surveys have discovered giant exoplanets on au-scale orbits with a broad distribution of eccentricities. Those with the most eccentric orbits are valuable laboratories for testing theories of high-eccentricity migration. However, few such exoplanets transit their host stars, thus removing the ability to apply constraints on formation from their bulk internal compositions. We report the discovery of Kepler-1704 b, a transiting 4.15 M_J giant planet on a 988.88 day orbit with an extreme eccentricity of 0.921_(-0.015)^(+0.010). Our decade-long RV baseline from the Keck I telescope allows us to measure the orbit and bulk heavy-element composition of Kepler-1704 b and place limits on the existence of undiscovered companions. A failed hot Jupiter, Kepler-1704 b was likely excited to high eccentricity by scattering events that possibly began during its gas accretion phase. Its final periastron distance was too large to allow for tidal circularization, so now it orbits its host from distances spanning 0.16\u20133.9 au. The maximum difference in planetary equilibrium temperature resulting from this elongated orbit is over 700 K. A simulation of the thermal phase curve of Kepler-1704 b during periastron passage demonstrates that it is a remarkable target for atmospheric characterization from the James Webb Space Telescope, which could potentially also measure the planet's rotational period as the hot spot from periastron rotates in and out of view. Continued characterization of the Kepler-1704 system promises to refine theories explaining the formation of hot Jupiters and cool giant planets like those in the solar system.",
"doi": "10.3847/1538-3881/ac134b",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-10",
"series_number": "4",
"volume": "162",
"issue": "4",
"pages": "Art. No. 154"
},
{
"id": "authors:zb42r-tr911",
"collection": "authors",
"collection_id": "zb42r-tr911",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210813-181202161",
"type": "article",
"title": "Long-period Jovian Tilts the Orbits of Two sub-Neptunes Relative to Stellar Spin Axis in Kepler-129",
"author": [
{
"family_name": "Zhang",
"given_name": "Jingwen",
"orcid": "0000-0002-2696-2406",
"clpid": "Zhang-Jingwen"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488",
"clpid": "Huber-Daniel"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Grunblatt",
"given_name": "Samuel",
"orcid": "0000-0003-4976-9980",
"clpid": "Grunblatt-Samuel-K"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359",
"clpid": "Kosiarek-Molly-R"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
}
],
"abstract": "We present the discovery of Kepler-129 d (P_d = 7.2_(-0.3)^(+0.4) yr, m sin i_d = 8.3_(-0.7)^(+1.1), M_(Jup), e_d = 0.15_(-0.05)^(+0.07)) based on six years of radial-velocity observations from Keck/HIRES. Kepler-129 also hosts two transiting sub-Neptunes: Kepler-129 b (P_b = 15.79 days, r_b = 2.40 \u00b1 0.04 R_\u2295) and Kepler-129 c (P_c = 82.20 days, r_c = 2.52 \u00b1 0.07 R_\u2295) for which we measure masses of m_b < 20 M_\u2295 and m_c = 43\u208b\u2081\u2082\u207a\u00b9\u00b3 M_\u2295. Kepler-129 is a hierarchical system consisting of two tightly packed inner planets and a massive external companion. In such a system, two inner planets precess around the orbital normal of the outer companion, causing their inclinations to oscillate with time. Based on an asteroseismic analysis of Kepler data, we find tentative evidence that Kepler-129 b and c are misaligned with stellar spin axis by \u227338\u00b0, which could be torqued by Kepler-129 d if it is inclined by \u227319\u00b0 relative to inner planets. Using N-body simulations, we provide additional constraints on the mutual inclination between Kepler-129 d and inner planets by estimating the fraction of time during which two inner planets both transit. The probability that two planets both transit decreases as their misalignment with Kepler-129 d increases. We also find a more massive Kepler-129 c enables the two inner planets to become strongly coupled and more resistant to perturbations from Kepler-129 d. The unusually high mass of Kepler-129 c provides a valuable benchmark for both planetary dynamics and interior structure, since the best-fit mass is consistent with this 2.5 R_\u2295 planet having a rocky surface.",
"doi": "10.3847/1538-3881/ac0634",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-09",
"series_number": "3",
"volume": "162",
"issue": "3",
"pages": "Art. No. 89"
},
{
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"collection_id": "896w1-bha75",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210727-213650344",
"type": "article",
"title": "TKS X: Confirmation of TOI-1444b and a Comparative Analysis of the Ultra-short-period Planets with Hot Neptunes",
"author": [
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-S-C"
},
{
"family_name": "Brinkman",
"given_name": "Casey L.",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Akana Murphy",
"given_name": "Joseph M.",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Rosenthal",
"given_name": "Lee",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Zandt",
"given_name": "Judah Van",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Beichman",
"given_name": "Charles",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Ciardi",
"given_name": "David",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Gonzales",
"given_name": "Erica",
"orcid": "0000-0002-9329-2190"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Matson",
"given_name": "Rachel A.",
"orcid": "0000-0001-7233-7508"
},
{
"family_name": "Matthews",
"given_name": "Elisabeth C.",
"orcid": "0000-0003-0593-1560"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Colon",
"given_name": "Knicole D.",
"orcid": "0000-0001-8020-7121"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "McLean",
"given_name": "Brian",
"orcid": "0000-0002-8058-643X"
},
{
"family_name": "Rudat",
"given_name": "Alexander"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
}
],
"abstract": "We report the discovery of TOI-1444b, a 1.4 R_\u2295 super-Earth on a 0.47 day orbit around a Sun-like star discovered by TESS. Precise radial velocities from Keck/HIRES confirmed the planet and constrained the mass to be 3.87 \u00b1 0.71M_\u2295. The RV data set also indicates a possible nontransiting, 16 day planet (11.8 \u00b1 2.9M_\u2295). We report a tentative detection of phase-curve variation and a secondary eclipse of TOI-1444b in the TESS bandpass. TOI-1444b joins the growing sample of 17 ultra-short-period planets (USPs) with well-measured masses and sizes, most of which are compatible with an Earth-like composition. We take this opportunity to examine the expanding sample of ultra-short-period planets (<2R_\u2295) and contrast them with the newly discovered sub-day ultrahot Neptunes (>3R_\u2295, >2000F_\u2295 TOI-849 b, LTT9779 b, and K2-100). We find that (1) USPs have predominately Earth-like compositions with inferred iron core mass fractions of 0.32 \u00b1 0.04 and have masses below the threshold of runaway accretion (~10M_\u2295), while ultrahot Neptunes are above the threshold and have H/He or other volatile envelopes. (2) USPs are almost always found in multi-planet systems consistent with a secular interaction formation scenario; ultrahot Neptunes (P_(orb) \u227e1 day) tend to be \"lonely,\" similar to longer-period hot Neptunes (P_(orb) 1\u201310 days) and hot Jupiters. (3) USPs occur around solar-metallicity stars while hot Neptunes prefer higher metallicity hosts. (4) In all these respects, ultrahot Neptunes show more resemblance to hot Jupiters than the smaller USP planets, although ultrahot Neptunes are rarer than both USPs and hot Jupiters by 1\u20132 orders of magnitude.",
"doi": "10.3847/1538-3881/ac02bd",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-08",
"series_number": "2",
"volume": "162",
"issue": "2",
"pages": "Art. No. 62"
},
{
"id": "authors:2hh66-0m953",
"collection": "authors",
"collection_id": "2hh66-0m953",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211124-203854733",
"type": "monograph",
"title": "Extreme Precision Radial Velocity Working Group Final Report",
"author": [
{
"family_name": "Crass",
"given_name": "J.",
"clpid": "Crass-Jonathan"
},
{
"family_name": "Gaudi",
"given_name": "B. Scott",
"orcid": "0000-0003-0395-9869"
},
{
"family_name": "Leifer",
"given_name": "S.",
"orcid": "0000-0002-8980-7825",
"clpid": "Leifer-Stephanie-D"
},
{
"family_name": "Beichman",
"given_name": "C. A.",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Bender",
"given_name": "Chad",
"orcid": "0000-0003-4384-7220"
},
{
"family_name": "Blackwood",
"given_name": "Gary"
},
{
"family_name": "Burt",
"given_name": "Jennifer A.",
"orcid": "0000-0002-0040-6815"
},
{
"family_name": "Callas",
"given_name": "John L."
},
{
"family_name": "Cegla",
"given_name": "Heather M."
},
{
"family_name": "Diddams",
"given_name": "Scott A.",
"orcid": "0000-0002-2144-0764"
},
{
"family_name": "Dumusque",
"given_name": "Xavier",
"orcid": "0000-0002-9332-2011"
},
{
"family_name": "Eastman",
"given_name": "Jason D.",
"orcid": "0000-0003-3773-5142"
},
{
"family_name": "Ford",
"given_name": "Eric B.",
"orcid": "0000-0001-6545-639X"
},
{
"family_name": "Fulton",
"given_name": "B. J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Gibson",
"given_name": "Rose"
},
{
"family_name": "Halverson",
"given_name": "Samuel",
"orcid": "0000-0003-1312-9391"
},
{
"family_name": "Haywood",
"given_name": "Rapha\u00eblle D.",
"orcid": "0000-0001-9140-3574"
},
{
"family_name": "Hearty",
"given_name": "Fred",
"orcid": "0000-0002-1664-3102"
},
{
"family_name": "Howard",
"given_name": "A.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "L\u00f6hner-B\u00f6ttcher",
"given_name": "Johannes"
},
{
"family_name": "Mamajek",
"given_name": "Eric E.",
"orcid": "0000-0003-2008-1488"
},
{
"family_name": "Mortier",
"given_name": "Annelies",
"orcid": "0000-0001-7254-4363"
},
{
"family_name": "Newman",
"given_name": "Patrick"
},
{
"family_name": "Plavchan",
"given_name": "Peter",
"orcid": "0000-0002-8864-1667"
},
{
"family_name": "Quirrenbach",
"given_name": "Andreas"
},
{
"family_name": "Reiners",
"given_name": "Ansgar"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-0091-7105"
},
{
"family_name": "Seifahrt",
"given_name": "Andres"
},
{
"family_name": "Szentgyorgyi",
"given_name": "Andy"
},
{
"family_name": "Terrien",
"given_name": "Ryan",
"orcid": "0000-0002-4788-8858"
},
{
"family_name": "Teske",
"given_name": "Johanna K."
},
{
"family_name": "Thompson",
"given_name": "Samantha"
},
{
"family_name": "Vasisht",
"given_name": "G.",
"orcid": "0000-0002-1871-6264",
"clpid": "Vasisht-Gautam"
}
],
"abstract": "Precise mass measurements of exoplanets discovered by the direct imaging or transit technique are required to determine planet bulk properties and potential habitability. Furthermore, it is generally acknowledged that, for the foreseeable future, the Extreme Precision Radial Velocity (EPRV) measurement technique is the only method potentially capable of detecting and measuring the masses and orbits of habitable-zone Earths orbiting nearby F, G, and K spectral-type stars from the ground. In particular, EPRV measurements with a precision of better than approximately 10 cm/s (with a few cm/s stability over many years) are required. Unfortunately, for nearly a decade, PRV instruments and surveys have been unable to routinely reach RV accuracies of less than roughly 1 m/s. Making EPRV science and technology development a critical component of both NASA and NSF program plans is crucial for reaching the goal of detecting potentially habitable Earthlike planets and supporting potential future exoplanet direct imaging missions such as the Habitable Exoplanet Observatory (HabEx) or the Large Ultraviolet Optical Infrared Surveyor (LUVOIR). In recognition of these facts, the 2018 National Academy of Sciences (NAS) Exoplanet Science Strategy (ESS) report recommended the development of EPRV measurements as a critical step toward the detection and characterization of habitable, Earth-analog planets. In response to the NAS-ESS recommendation, NASA and NSF commissioned the EPRV Working Group to recommend a ground-based program architecture and implementation plan to achieve the goal intended by the NAS. This report documents the activities, findings, and recommendations of the EPRV Working Group.",
"doi": "10.48550/arXiv.2107.14291",
"publisher": "arXiv",
"publication_date": "2021-07-29"
},
{
"id": "authors:nracr-r9n75",
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"collection_id": "nracr-r9n75",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210721-211711891",
"type": "article",
"title": "California Legacy Survey. II. Occurrence of Giant Planets beyond the Ice Line",
"author": [
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443",
"clpid": "Hirsch-Lea-A"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Dedrick",
"given_name": "Cayla M.",
"orcid": "0000-0001-9408-8848",
"clpid": "Dedrick-Cayla-M"
},
{
"family_name": "Sherstyuk",
"given_name": "Ilya A.",
"orcid": "0000-0001-7730-0202",
"clpid": "Sherstyuk-Ilya-A"
},
{
"family_name": "Blunt",
"given_name": "Sarah C.",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Crepp",
"given_name": "Justin R.",
"orcid": "0000-0003-0800-0593",
"clpid": "Crepp-Justin-R"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Fischer",
"given_name": "Debra A.",
"orcid": "0000-0003-2221-0861",
"clpid": "Fischer-Debra-A"
},
{
"family_name": "Henry",
"given_name": "Gregory W.",
"orcid": "0000-0003-4155-8513",
"clpid": "Henry-Gregory-W"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Kosiarek",
"given_name": "Molly",
"orcid": "0000-0002-6115-4359",
"clpid": "Kosiarek-Molly-R"
},
{
"family_name": "Marcy",
"given_name": "Geoffrey W.",
"orcid": "0000-0002-2909-0113",
"clpid": "Marcy-Geoffrey-W"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Wright",
"given_name": "Jason T.",
"orcid": "0000-0001-6160-5888",
"clpid": "Wright-Jason-T"
}
],
"abstract": "We used high-precision radial velocity measurements of FGKM stars to determine the occurrence of giant planets as a function of orbital separation spanning 0.03\u201330 au. Giant planets are more prevalent at orbital distances of 1\u201310 au compared to orbits interior or exterior of this range. The increase in planet occurrence at ~1 au by a factor of ~4 is highly statistically significant. A fall-off in giant planet occurrence at larger orbital distances is favored over models with flat or increasing occurrence. We measure 14.1^(+2.0)_(-1.8) giant planets per 100 stars with semimajor axes of 2\u20138 au and 8.9^(+3.0)_(-2.4) giant planets per 100 stars in the range 8\u201332 au, a decrease in occurrence with increasing orbital separation that is significant at the ~2\u03c3 level. We find that the occurrence rate of sub-Jovian planets (0.1\u20131 Jupiter masses) is also enhanced for 1\u201310 au orbits. This suggests that lower-mass planets may share the formation or migration mechanisms that drive the increased prevalence near the water\u2013ice line for their Jovian counterparts. Our measurements of cold gas giant occurrence are consistent with the latest results from direct imaging surveys and gravitational lensing surveys despite different stellar samples. We corroborate previous findings that giant planet occurrence increases with stellar mass and metallicity.",
"doi": "10.3847/1538-4365/abfcc1",
"issn": "0067-0049",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Supplement Series",
"publication_date": "2021-07",
"series_number": "1",
"volume": "255",
"issue": "1",
"pages": "Art. No. 14"
},
{
"id": "authors:xchq8-ac416",
"collection": "authors",
"collection_id": "xchq8-ac416",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210715-145459591",
"type": "article",
"title": "The California Legacy Survey. I. A Catalog of 178 Planets from Precision Radial Velocity Monitoring of 719 Nearby Stars over Three Decades",
"author": [
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443",
"clpid": "Hirsch-Lea-A"
},
{
"family_name": "Isaacson",
"given_name": "Howard T.",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Dedrick",
"given_name": "Cayla M.",
"orcid": "0000-0001-9408-8848",
"clpid": "Dedrick-Cayla-M"
},
{
"family_name": "Sherstyuk",
"given_name": "Ilya A.",
"orcid": "0000-0001-7730-0202",
"clpid": "Sherstyuk-Ilya-A"
},
{
"family_name": "Blunt",
"given_name": "Sarah C.",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Crepp",
"given_name": "Justin R.",
"orcid": "0000-0003-0800-0593",
"clpid": "Crepp-Justin-R"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Fischer",
"given_name": "Debra A.",
"orcid": "0000-0003-2221-0861",
"clpid": "Fischer-Debra-A"
},
{
"family_name": "Henry",
"given_name": "Gregory W.",
"orcid": "0000-0003-4155-8513",
"clpid": "Henry-Gregory-W"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Kosiarek",
"given_name": "Molly",
"orcid": "0000-0002-6115-4359",
"clpid": "Kosiarek-Molly-R"
},
{
"family_name": "Marcy",
"given_name": "Geoffrey W.",
"orcid": "0000-0002-2909-0113",
"clpid": "Marcy-Geoffrey-W"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Wright",
"given_name": "Jason T.",
"orcid": "0000-0001-6160-5888",
"clpid": "Wright-Jason-T"
}
],
"abstract": "We present a high-precision radial velocity (RV) survey of 719 FGKM stars, which host 164 known exoplanets and 14 newly discovered or revised exoplanets and substellar companions. This catalog updated the orbital parameters of known exoplanets and long-period candidates, some of which have decades-longer observational baselines than they did upon initial detection. The newly discovered exoplanets range from warm sub-Neptunes and super-Earths to cold gas giants. We present the catalog sample selection criteria, as well as over 100,000 RV measurements, which come from the Keck-HIRES, APF-Levy, and Lick-Hamilton spectrographs. We introduce the new RV search pipeline RVSearch (https://california-planet-search.github.io/rvsearch/) that we used to generate our planet catalog, and we make it available to the public as an open-source Python package. This paper is the first study in a planned series that will measure exoplanet occurrence rates and compare exoplanet populations, including studies of giant planet occurrence beyond the water ice line, and eccentricity distributions to explore giant planet formation pathways. We have made public all radial velocities and associated data that we use in this catalog.",
"doi": "10.3847/1538-4365/abe23c",
"issn": "0067-0049",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Supplement Series",
"publication_date": "2021-07",
"series_number": "1",
"volume": "255",
"issue": "1",
"pages": "Art. No. 8"
},
{
"id": "authors:yvfcz-vhx78",
"collection": "authors",
"collection_id": "yvfcz-vhx78",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210518-083339018",
"type": "article",
"title": "Evolution of the Exoplanet Size Distribution: Forming Large Super-Earths Over Billions of Years",
"author": [
{
"family_name": "David",
"given_name": "Trevor J.",
"orcid": "0000-0001-6534-6246",
"clpid": "David-Trevor-J"
},
{
"family_name": "Contardo",
"given_name": "Gabriella",
"orcid": "0000-0002-3011-4784",
"clpid": "Contardo-Gabriella"
},
{
"family_name": "Sandoval",
"given_name": "Angeli",
"orcid": "0000-0003-1133-1027",
"clpid": "Sandoval-Angeli"
},
{
"family_name": "Angus",
"given_name": "Ruth",
"orcid": "0000-0003-4540-5661",
"clpid": "Angus-Ruth"
},
{
"family_name": "Lu",
"given_name": "Yuxi (Lucy)",
"orcid": "0000-0003-4769-3273",
"clpid": "Lu-Yuxi-Lucy"
},
{
"family_name": "Bedell",
"given_name": "Megan",
"orcid": "0000-0001-9907-7742",
"clpid": "Bedell-Megan-E"
},
{
"family_name": "Curtis",
"given_name": "Jason L.",
"orcid": "0000-0002-2792-134X",
"clpid": "Curtis-Jason-L"
},
{
"family_name": "Foreman-Mackey",
"given_name": "Daniel",
"orcid": "0000-0002-9328-5652",
"clpid": "Foreman-Mackey-D"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Grunblatt",
"given_name": "Samuel K.",
"orcid": "0000-0003-4976-9980",
"clpid": "Grunblatt-Samuel-K"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
}
],
"abstract": "The radius valley, a bifurcation in the size distribution of small, close-in exoplanets, is hypothesized to be a signature of planetary atmospheric loss. Such an evolutionary phenomenon should depend on the age of the star\u2013planet system. In this work, we study the temporal evolution of the radius valley using two independent determinations of host star ages among the California\u2013Kepler Survey (CKS) sample. We find evidence for a wide and nearly empty void of planets in the period\u2013radius diagram at the youngest system ages (\u227e2\u20133 Gyr) represented in the CKS sample. We show that the orbital period dependence of the radius valley among the younger CKS planets is consistent with that found among those planets with asteroseismically determined host star radii. Relative to previous studies of preferentially older planets, the radius valley determined among the younger planetary sample is shifted to smaller radii. This result is compatible with an atmospheric loss timescale on the order of gigayears for progenitors of the largest observed super-Earths. In support of this interpretation, we show that the planet sizes that appear to be unrepresented at ages \u227e2\u20133 Gyr are likely to correspond to planets with rocky compositions. Our results suggest that the size distribution of close-in exoplanets and the precise location of the radius valley evolve over gigayears.",
"doi": "10.3847/1538-3881/abf439",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-06",
"series_number": "6",
"volume": "161",
"issue": "6",
"pages": "Art. No. 265"
},
{
"id": "authors:hmnkh-3r859",
"collection": "authors",
"collection_id": "hmnkh-3r859",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210217-111259280",
"type": "article",
"title": "TESS\u2013Keck Survey. IV. A Retrograde, Polar Orbit for the Ultra-low-density, Hot Super-Neptune WASP-107b",
"author": [
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven-A"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736",
"clpid": "Lubin-Jack"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519",
"clpid": "Batalha-Natalie-M"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233",
"clpid": "Dressing-Courtney-D"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488",
"clpid": "Huber-Daniel"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678",
"clpid": "Robertson-Paul-M"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775",
"clpid": "Roy-Arpita"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364",
"clpid": "Beard-Corey"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756",
"clpid": "Hill-Michelle-L"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135",
"clpid": "Mayo-Andrew-W"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X",
"clpid": "Mo\u010dnik-Teo"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284",
"clpid": "Murphy-Joseph-M-Akana"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280",
"clpid": "Scarsdale-Nicholas"
}
],
"abstract": "We measured the Rossiter\u2013McLaughlin effect of WASP-107b during a single transit with Keck/HIRES. We found the sky-projected inclination of WASP-107b's orbit, relative to its host star's rotation axis, to be |\u03bb| = 118\u207a\u00b3\u2078\u208b\u2081\u2089 degrees. This confirms the misaligned/polar orbit that was previously suggested from spot-crossing events and adds WASP-107b to the growing population of hot Neptunes in polar orbits around cool stars. WASP-107b is also the fourth such planet to have a known distant planetary companion. We examined several dynamical pathways by which this companion could have induced such an obliquity in WASP-107b. We find that nodal precession and disk dispersal-driven tilting can both explain the current orbital geometry while Kozai\u2013Lidov cycles are suppressed by general relativity. While each hypothesis requires a mutual inclination between the two planets, nodal precession requires a much larger angle, which for WASP-107 is on the threshold of detectability with future Gaia astrometric data. As nodal precession has no stellar type dependence, but disk dispersal-driven tilting does, distinguishing between these two models is best done on the population level. Finding and characterizing more extrasolar systems like WASP-107 will additionally help distinguish whether the distribution of hot-Neptune obliquities is a dichotomy of aligned and polar orbits or if we are uniformly sampling obliquities during nodal precession cycles.",
"doi": "10.3847/1538-3881/abd177",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-03",
"series_number": "3",
"volume": "161",
"issue": "3",
"pages": "Art. No. 119"
},
{
"id": "authors:d1ry8-p7884",
"collection": "authors",
"collection_id": "d1ry8-p7884",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210301-081416249",
"type": "article",
"title": "Understanding the Impacts of Stellar Companions on Planet Formation and Evolution: A Survey of Stellar and Planetary Companions within 25 pc",
"author": [
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443",
"clpid": "Hirsch-Lea-A"
},
{
"family_name": "Rosenthal",
"given_name": "Lee",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Marcy",
"given_name": "Geoffrey W.",
"orcid": "0000-0002-2909-0113",
"clpid": "Marcy-Geoffrey-W"
},
{
"family_name": "Nielsen",
"given_name": "Eric",
"orcid": "0000-0001-6975-9056",
"clpid": "Nielsen-Eric-L"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "de Rosa",
"given_name": "Robert J.",
"orcid": "0000-0002-4918-0247",
"clpid": "De-Rosa-Robert-J"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Sinukoff",
"given_name": "Evan",
"orcid": "0000-0002-5658-0601",
"clpid": "Sinukoff-Evan"
},
{
"family_name": "Macintosh",
"given_name": "Bruce",
"orcid": "0000-0003-1212-7538",
"clpid": "Macintosh-Bruce-A"
}
],
"abstract": "We explore the impact of outer stellar companions on the occurrence rate of giant planets detected with radial velocities. We searched for stellar and planetary companions to a volume-limited sample of solar-type stars within 25 pc. Using adaptive optics imaging observations from the Lick 3 m and Palomar 200\" Telescopes, we characterized the multiplicity of our sample stars, down to the bottom of the main sequence. With these data, we confirm field star multiplicity statistics from previous surveys. We additionally combined three decades of radial velocity (RV) data from the California Planet Search with newly collected RV data from Keck/HIRES and the Automated Planet Finder/Levy Spectrometer to search for planetary companions in these same systems. Using an updated catalog of both stellar and planetary companions, as well as detailed injection/recovery tests to determine our sensitivity and completeness, we measured the occurrence rate of planets among the single- and multiple-star systems. We found that planets with masses in the range of 0.1\u201310 M_J and with semimajor axes of 0.1\u201310 au have an occurrence rate of 0.18^(+0.04)_(\u22120.03) planets per star when they orbit single stars and an occurrence rate of 0.12 \u00b1 0.04 planets per star when they orbit a star in a binary system. Breaking the sample down by the binary separation, we found that only one planet-hosting binary system had a binary separation <100 au, and none had a separation <50 au. These numbers yielded planet occurrence rates of 0.20^(+0.07)_(\u22120.06) planets per star for binaries with separation a_B > 100 au and 0.04^(+0.04)_(\u22120.02) planets per star for binaries with separation a_B < 100 au. The similarity in the planet occurrence rate around single stars and wide primaries implies that wide binary systems should actually host more planets than single-star systems, since they have more potential host stars. We estimated a system-wide planet occurrence rate of 0.3 planets per wide binary system for binaries with separations a_B > 100 au. Finally, we found evidence that giant planets in binary systems have a different semimajor-axis distribution than their counterparts in single-star systems. The planets in the single-star sample had a significantly higher occurrence rate outside of 1 au than inside 1 au by nearly 4\u03c3, in line with expectations that giant planets are most common near the snow line. However, the planets in the wide binary systems did not follow this distribution, but rather had equivalent occurrence rates interior and exterior to 1 au. This may point to binary-mediated planet migration acting on our sample, even in binaries wider than 100 au.",
"doi": "10.3847/1538-3881/abd639",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-03",
"series_number": "3",
"volume": "161",
"issue": "3",
"pages": "Art. No. 134"
},
{
"id": "authors:0dy1r-pk119",
"collection": "authors",
"collection_id": "0dy1r-pk119",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200611-113726508",
"type": "article",
"title": "TESS Discovery of a Super-Earth and Three Sub-Neptunes Hosted by the Bright, Sun-like Star HD 108236",
"author": [
{
"family_name": "Daylan",
"given_name": "Tansu",
"orcid": "0000-0002-6939-9211",
"clpid": "Daylan-Tansu"
},
{
"family_name": "Pingl\u00e9",
"given_name": "Kartik",
"orcid": "0000-0001-8965-1472"
},
{
"family_name": "Wright",
"given_name": "Jasmine",
"orcid": "0000-0002-0179-2105"
},
{
"family_name": "G\u00fcnther",
"given_name": "Maximilian N.",
"orcid": "0000-0002-3164-9086"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Vanderburg",
"given_name": "Andrew",
"orcid": "0000-0001-7246-5438"
},
{
"family_name": "Jontof-Hutter",
"given_name": "Daniel",
"orcid": "0000-0002-6227-7510"
},
{
"family_name": "Rodriguez",
"given_name": "Joseph E.",
"orcid": "0000-0001-8812-0565"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Huang",
"given_name": "Chelsea X.",
"orcid": "0000-0003-0918-7484"
},
{
"family_name": "Mikal-Evans",
"given_name": "Thomas",
"orcid": "0000-0001-5442-1300"
},
{
"family_name": "Badenas-Agusti",
"given_name": "Mariona",
"orcid": "0000-0003-4903-567X"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Rackham",
"given_name": "Benjamin V.",
"orcid": "0000-0002-3627-1676"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Cloutier",
"given_name": "Ryan",
"orcid": "0000-0001-5383-9393"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Guerra",
"given_name": "Pere",
"orcid": "0000-0002-4308-2339"
},
{
"family_name": "Jensen",
"given_name": "Eric L. N.",
"orcid": "0000-0002-4625-7333"
},
{
"family_name": "Kielkopf",
"given_name": "John F.",
"orcid": "0000-0003-0497-2651"
},
{
"family_name": "Massey",
"given_name": "Bob",
"orcid": "0000-0001-8879-7138"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Charbonneau",
"given_name": "David",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Lissauer",
"given_name": "Jack J.",
"orcid": "0000-0001-6513-1659"
},
{
"family_name": "Irwin",
"given_name": "Jonathan M."
},
{
"family_name": "Ba\u015ft\u00fcrk",
"given_name": "\u00d6zg\u00fcr",
"orcid": "0000-0002-4746-0181"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Soubkiou",
"given_name": "Abderahmane",
"orcid": "0000-0002-0345-2147"
},
{
"family_name": "Zouhair",
"given_name": "Benkhaldoun",
"orcid": "0000-0001-6285-9847"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Ziegler",
"given_name": "Carl",
"orcid": "0000-0002-0619-7639"
},
{
"family_name": "Brice\u00f1o",
"given_name": "C\u00e9sar",
"orcid": "0000-0001-7124-4094"
},
{
"family_name": "Law",
"given_name": "Nicholas",
"orcid": "0000-0001-9380-6457"
},
{
"family_name": "Mann",
"given_name": "Andrew W.",
"orcid": "0000-0003-3654-1602"
},
{
"family_name": "Scott",
"given_name": "Nic",
"orcid": "0000-0003-1038-9702"
},
{
"family_name": "Furlan",
"given_name": "Elise",
"orcid": "0000-0001-9800-6248",
"clpid": "Furlan-Elise"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Matson",
"given_name": "Rachel",
"orcid": "0000-0001-7233-7508"
},
{
"family_name": "Hellier",
"given_name": "Coel",
"orcid": "0000-0002-3439-1439"
},
{
"family_name": "Anderson",
"given_name": "David R.",
"orcid": "0000-0001-7416-7522"
},
{
"family_name": "Butler",
"given_name": "R. Paul",
"orcid": "0000-0003-1305-3761"
},
{
"family_name": "Crane",
"given_name": "Jeffery D.",
"orcid": "0000-0002-5226-787X"
},
{
"family_name": "Teske",
"given_name": "Joanna K."
},
{
"family_name": "Schectman",
"given_name": "Stephen A.",
"orcid": "0000-0002-8681-6136"
},
{
"family_name": "Kristiansen",
"given_name": "Martti H.",
"orcid": "0000-0002-2607-138X"
},
{
"family_name": "Terentev",
"given_name": "Ivan A."
},
{
"family_name": "Schwengeler",
"given_name": "Hans Martin"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Berta-Thompson",
"given_name": "Zachory K.",
"orcid": "0000-0002-3321-4924"
},
{
"family_name": "Bouma",
"given_name": "Luke G.",
"orcid": "0000-0002-0514-5538"
},
{
"family_name": "Furesz",
"given_name": "Gabor"
},
{
"family_name": "Henze",
"given_name": "Christopher E."
},
{
"family_name": "Morgan",
"given_name": "Edward H.",
"orcid": "0000-0003-1447-6344"
},
{
"family_name": "Quintana",
"given_name": "Elisa",
"orcid": "0000-0003-1309-2904"
},
{
"family_name": "Ting",
"given_name": "Eric B.",
"orcid": "0000-0002-8219-9505"
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
}
],
"abstract": "We report the discovery and validation of four extrasolar planets hosted by the nearby, bright, Sun-like (G3V) star HD 108236 using data from the Transiting Exoplanet Survey Satellite (TESS). We present transit photometry, reconnaissance, and precise Doppler spectroscopy, as well as high-resolution imaging, to validate the planetary nature of the objects transiting HD 108236, also known as the TESS Object of Interest (TOI) 1233. The innermost planet is a possibly rocky super-Earth with a period of 3.79523^(+0.00047)_(\u22120.00044) days and has a radius of 1.586 \u00b1 0.098 R_\u2295. The outer planets are sub-Neptunes, with potential gaseous envelopes, having radii of 2.068^(+0.10)_(\u22120.091) R_\u2295, 2.72 \u00b1 0.11 R_\u2295, and 3.12^(+0.13)_(\u22120.12) R_\u2295 and periods of 6.20370^(+0.00064)_(\u22120.00052) days, 14.17555^(+0.00099)_(\u22120.0011) days, and 19.5917^(+0.0022)_(\u22120.0020) days, respectively. With V and K_s magnitudes of 9.2 and 7.6, respectively, the bright host star makes the transiting planets favorable targets for mass measurements and, potentially, for atmospheric characterization via transmission spectroscopy. HD 108236 is the brightest Sun-like star in the visual (V) band known to host four or more transiting exoplanets. The discovered planets span a broad range of planetary radii and equilibrium temperatures and share a common history of insolation from a Sun-like star (R_\u2605 = 0.888 \u00b1 0.017 R_\u2299, T_(eff) = 5730 \u00b1 50 K), making HD 108236 an exciting, opportune cosmic laboratory for testing models of planet formation and evolution.",
"doi": "10.3847/1538-3881/abd73e",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-02",
"series_number": "2",
"volume": "161",
"issue": "2",
"pages": "Art. No. 85"
},
{
"id": "authors:dpq66-nfb36",
"collection": "authors",
"collection_id": "dpq66-nfb36",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210119-143307701",
"type": "article",
"title": "WASP-107b's Density Is Even Lower: A Case Study for the Physics of Planetary Gas Envelope Accretion and Orbital Migration",
"author": [
{
"family_name": "Piaulet",
"given_name": "Caroline",
"orcid": "0000-0002-2875-917X",
"clpid": "Piaulet-Caroline"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498",
"clpid": "Benneke-Bj\u00f6rn"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Lee",
"given_name": "Eve J.",
"orcid": "0000-0002-1228-9820",
"clpid": "Lee-Eve-J"
},
{
"family_name": "Thorngren",
"given_name": "Daniel",
"orcid": "0000-0002-5113-8558",
"clpid": "Thorngren-Daniel-P"
},
{
"family_name": "Angus",
"given_name": "Ruth",
"orcid": "0000-0003-4540-5661",
"clpid": "Angus-Ruth"
},
{
"family_name": "Peterson",
"given_name": "Merrin",
"orcid": "0000-0002-2787-5451",
"clpid": "Peterson-Merrin"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062",
"clpid": "Schlieder-Joshua-E"
},
{
"family_name": "Werner",
"given_name": "Michael",
"orcid": "0000-0003-4990-189X",
"clpid": "Wener-Michael"
},
{
"family_name": "Kreidberg",
"given_name": "Laura",
"orcid": "0000-0003-0514-1147",
"clpid": "Kreidberg-Laura"
},
{
"family_name": "Jaouni",
"given_name": "Tareq",
"clpid": "Jaouni-Tareq"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Livingston",
"given_name": "John",
"orcid": "0000-0002-4881-3620",
"clpid": "Livingston-John-H"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233",
"clpid": "Dressing-Courtney-D"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Beichman",
"given_name": "Charles",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Gorjian",
"given_name": "Varoujan",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
},
{
"family_name": "Hardegree-Ullman",
"given_name": "Kevin K.",
"orcid": "0000-0003-3702-0382",
"clpid": "Hardegree-Ullman-Kevin-K"
},
{
"family_name": "Krick",
"given_name": "Jessica",
"orcid": "0000-0002-2413-5976",
"clpid": "Krick-Jessica-E"
},
{
"family_name": "Sinukoff",
"given_name": "Evan",
"orcid": "0000-0002-5658-0601",
"clpid": "Sinukoff-Evan"
}
],
"abstract": "With a mass in the Neptune regime and a radius of Jupiter, WASP-107b presents a challenge to planet formation theories. Meanwhile, the planet's low surface gravity and the star's brightness also make it one of the most favorable targets for atmospheric characterization. Here, we present the results of an extensive 4 yr Keck/HIRES radial-velocity (RV) follow-up program of the WASP-107 system and provide a detailed study of the physics governing the accretion of the gas envelope of WASP-107b. We reveal that WASP-107b's mass is only 1.8 Neptune masses (M_b = 30.5 \u00b1 1.7 M_\u2295). The resulting extraordinarily low density suggests that WASP-107b has a H/He envelope mass fraction of >85% unless it is substantially inflated. The corresponding core mass of <4.6 M_\u2295 at 3\u03c3 is significantly lower than what is traditionally assumed to be necessary to trigger massive gas envelope accretion. We demonstrate that this large gas-to-core mass ratio most plausibly results from the onset of accretion at gsim1 au onto a low-opacity, dust-free atmosphere and subsequent migration to the present-day a_b = 0.0566 \u00b1 0.0017 au. Beyond WASP-107b, we also detect a second, more massive planet (M_c sin i = 0.36 \u00b1 0.04MJ ) on a wide eccentric orbit (e _c = 0.28 \u00b1 0.07) that may have influenced the orbital migration and spin\u2013orbit misalignment of WASP-107b. Overall, our new RV observations and envelope accretion modeling provide crucial insights into the intriguing nature of WASP-107b and the system's formation history. Looking ahead, WASP-107b will be a keystone planet to understand the physics of gas envelope accretion.",
"doi": "10.3847/1538-3881/abcd3c",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-02",
"series_number": "2",
"volume": "161",
"issue": "2",
"pages": "Art. No. 70"
},
{
"id": "authors:80q4x-t7n54",
"collection": "authors",
"collection_id": "80q4x-t7n54",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210208-140557129",
"type": "article",
"title": "HAT-P-68b: A Transiting Hot Jupiter around a K5 Dwarf Star",
"author": [
{
"family_name": "Lindor",
"given_name": "Bethlee M.",
"orcid": "0000-0002-4061-3827",
"clpid": "Lindor-Bethlee-M"
},
{
"family_name": "Hartman",
"given_name": "Joel D.",
"orcid": "0000-0001-8732-6166",
"clpid": "Hartman-Joel-D"
},
{
"family_name": "Bakos",
"given_name": "G\u00e1sp\u00e1r \u00c1.",
"orcid": "0000-0001-7204-6727",
"clpid": "Bakos-G\u00e1sp\u00e1r-\u00c1"
},
{
"family_name": "Bhatti",
"given_name": "Waqas",
"orcid": "0000-0002-0628-0088",
"clpid": "Bhatti-Waqas"
},
{
"family_name": "Csubry",
"given_name": "Zolt\u00e1n",
"clpid": "Csubry-Zolt\u00e1n"
},
{
"family_name": "Penev",
"given_name": "Kaloyan",
"orcid": "0000-0003-4464-1371",
"clpid": "Penev-Kaloyan"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401",
"clpid": "Bieryla-Allyson"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388",
"clpid": "Latham-David-W"
},
{
"family_name": "Torres",
"given_name": "Guillermo",
"orcid": "0000-0002-5286-0251",
"clpid": "Torres-Guillermo"
},
{
"family_name": "Buchhave",
"given_name": "Lars A.",
"orcid": "0000-0003-1605-5666",
"clpid": "Buchhave-Lars-A"
},
{
"family_name": "de Val-Borro",
"given_name": "Miguel",
"orcid": "0000-0002-0455-9384",
"clpid": "de-Val-Borro-Miguel"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Boisse",
"given_name": "Isabelle",
"orcid": "0000-0001-8388-8399",
"clpid": "Boisse-Isabelle"
},
{
"family_name": "Santerne",
"given_name": "Alexandre",
"orcid": "0000-0002-3586-1316",
"clpid": "Santerne-Alexandre"
},
{
"family_name": "H\u00e9brard",
"given_name": "Guillaume",
"clpid": "H\u00e9brard-Guillaume"
},
{
"family_name": "Kov\u00e1cs",
"given_name": "T\u00e1m\u00e1s",
"orcid": "0000-0002-0697-6050",
"clpid": "Kov\u00e1cs-T\u00e1m\u00e1s"
},
{
"family_name": "Huang",
"given_name": "Chelsea X.",
"orcid": "0000-0003-0918-7484",
"clpid": "Huang-Chelsea-X"
},
{
"family_name": "Dembicky",
"given_name": "Jack",
"clpid": "Dembicky-Jack"
},
{
"family_name": "Falco",
"given_name": "Emilio",
"orcid": "0000-0002-7061-6519",
"clpid": "Falco-Emilio"
},
{
"family_name": "Everett",
"given_name": "Mark E.",
"orcid": "0000-0002-0885-7215",
"clpid": "Everett-Mark-E"
},
{
"family_name": "Horch",
"given_name": "Elliott P.",
"orcid": "0000-0003-2159-1463",
"clpid": "Horch-Elliott-P"
},
{
"family_name": "L\u00e1z\u00e1r",
"given_name": "J\u00f3zsef",
"clpid": "L\u00e1z\u00e1r-J\u00f3zsef"
},
{
"family_name": "Papp",
"given_name": "Istv\u00e1n",
"clpid": "Papp-Istv\u00e1n"
},
{
"family_name": "S\u00e1ri",
"given_name": "P\u00e1l",
"clpid": "S\u00e1ri-P\u00e1l"
}
],
"abstract": "We report the discovery by the ground-based Hungarian-made Automated Telescope Network (HATNet) survey of the transiting exoplanet HAT-P-68b, which has a mass of 0.724 \u00b1 0.043 M_J, and radius of 1.072 \u00b1 0.012 R_J. The planet is in a circular P = 2.2984 day orbit around a moderately bright V = 13.937 \u00b1 0.030 magnitude K-dwarf star of mass 0.673_(-0.014)^(+0.020) M_\u2299, and radius 0.6726 \u00b1 0.0069 R_\u2299. The planetary nature of this system is confirmed through follow-up transit photometry obtained with the Fred L. Whipple Observatory (FLWO) 1.2 m telescope, high-precision radial velocities measured using Keck I/High Resolution Echelle Spectrometer (HIRES), FLWO 1.5 m/Tillinghast Reflector Echelle Spectrograph (TRES), and Observatoire de Haute-Provence (OHP) 1.9 m/Sophie, and high-spatial-resolution speckle imaging from WIYN 3.5 m/DSSI. HAT-P-68 is at an ecliptic latitude of +3\u00b0 and outside the field of view of both the NASA Transiting Exoplanet Survey Satellite primary mission and the K2 mission. The large transit depth of 0.036 mag (r band) makes HAT-P-68b a promising target for atmospheric characterization via transmission spectroscopy.",
"doi": "10.3847/1538-3881/abc700",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-02",
"series_number": "2",
"volume": "161",
"issue": "2",
"pages": "Art. No. 64"
},
{
"id": "authors:tetme-13836",
"collection": "authors",
"collection_id": "tetme-13836",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200916-112902099",
"type": "article",
"title": "The TESS-Keck Survey. II. An Ultra-short-period Rocky Planet and Its Siblings Transiting the Galactic Thick-disk Star TOI-561",
"author": [
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Brewer",
"given_name": "John",
"orcid": "0000-0002-9873-1471"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Matthews",
"given_name": "Elisabeth C."
},
{
"family_name": "Ziegler",
"given_name": "Carl",
"orcid": "0000-0002-0619-7639"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775",
"clpid": "Roy-Arpita"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Claytor",
"given_name": "Zachary R."
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Mocnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Matson",
"given_name": "Rachel A.",
"orcid": "0000-0001-7233-7508"
},
{
"family_name": "Beichman",
"given_name": "Charles A.",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Gonzales",
"given_name": "Erica J.",
"orcid": "0000-0002-9329-2190"
},
{
"family_name": "Brice\u00f1o",
"given_name": "C\u00e9sar",
"orcid": "0000-0001-7124-4094"
},
{
"family_name": "Law",
"given_name": "Nicholas",
"orcid": "0000-0001-9380-6457"
},
{
"family_name": "Mann",
"given_name": "Andrew W.",
"orcid": "0000-0003-3654-1602"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Evans",
"given_name": "Phil",
"orcid": "0000-0002-5674-2404"
},
{
"family_name": "Fukui",
"given_name": "Akihiko",
"orcid": "0000-0002-4909-5763"
},
{
"family_name": "Jensen",
"given_name": "Eric L. N.",
"orcid": "0000-0002-4625-7333"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Parviainen",
"given_name": "Hannu",
"orcid": "0000-0001-5519-1391"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Tan",
"given_name": "Thiam-Guan",
"orcid": "0000-0001-5603-6895"
},
{
"family_name": "Jenkins",
"given_name": "Jon",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Ricker",
"given_name": "George",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "We report the discovery of TOI-561, a multiplanet system in the galactic thick disk that contains a rocky, ultra-short-period planet. This bright (V = 10.2) star hosts three small transiting planets identified in photometry from the NASA TESS mission: TOI-561 b (TOI-561.02, P = 0.44 days, R_p = 1.45 \u00b1 0.11 R_\u2295), c (TOI-561.01, P = 10.8 days, R_p = 2.90 \u00b1 0.13 R_\u2295), and d (TOI-561.03, P = 16.3 days, R_p = 2.32 \u00b1 0.16 R_\u2295). The star is chemically ([Fe/H] = \u22120.41 \u00b1 0.05, [\u03b1/Fe] = +0.23 \u00b1 0.05) and kinematically consistent with the galactic thick-disk population, making TOI-561 one of the oldest (10 \u00b1 3 Gyr) and most metal-poor planetary systems discovered yet. We dynamically confirm planets b and c with radial velocities from the W. M. Keck Observatory High Resolution Echelle Spectrometer. Planet b has a mass and density of 3.2 \u00b1 0.8 M_\u2295 and 5.5^(+2.0)_(-1.6) g cm\u207b\u00b3, consistent with a rocky composition. Its lower-than-average density is consistent with an iron-poor composition, although an Earth-like iron-to-silicates ratio is not ruled out. Planet c is 7.0 \u00b1 2.3 M_\u2295 and 1.6 \u00b1 0.6 g cm\u207b\u00b3, consistent with an interior rocky core overlaid with a low-mass volatile envelope. Several attributes of the photometry for planet d (which we did not detect dynamically) complicate the analysis, but we vet the planet with high-contrast imaging, ground-based photometric follow-up, and radial velocities. TOI-561 b is the first rocky world around a galactic thick-disk star confirmed with radial velocities and one of the best rocky planets for thermal emission studies.",
"doi": "10.3847/1538-3881/abd409",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-02",
"series_number": "2",
"volume": "161",
"issue": "2",
"pages": "Art. No. 56"
},
{
"id": "authors:3gkdp-yfe32",
"collection": "authors",
"collection_id": "3gkdp-yfe32",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200916-112905779",
"type": "article",
"title": "Physical Parameters of the Multiplanet Systems HD 106315 and GJ 9827",
"author": [
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359",
"clpid": "Kosiarek-Molly-R"
},
{
"family_name": "Berardo",
"given_name": "David A.",
"orcid": "0000-0001-6298-412X"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Laguna",
"given_name": "Cesar",
"orcid": "0000-0003-1314-7514"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Henry",
"given_name": "Gregory W.",
"orcid": "0000-0003-4155-8513"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443"
},
{
"family_name": "Teske",
"given_name": "Johanna"
},
{
"family_name": "Burt",
"given_name": "Jennifer A.",
"orcid": "0000-0002-0040-6815",
"clpid": "Burt-Jennifer-A"
},
{
"family_name": "Mills",
"given_name": "Sean M.",
"orcid": "0000-0002-4535-6241",
"clpid": "Mills-Sean-M"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Mocnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Werner",
"given_name": "Michael",
"clpid": "Werner-Michael-W"
},
{
"family_name": "Livingston",
"given_name": "John H.",
"orcid": "0000-0002-4881-3620"
},
{
"family_name": "Krick",
"given_name": "Jessica",
"orcid": "0000-0002-2413-5976",
"clpid": "Krick-Jessica-E"
},
{
"family_name": "Beichman",
"given_name": "Charles",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Gorjian",
"given_name": "Varoujan",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
},
{
"family_name": "Kreidberg",
"given_name": "Laura",
"orcid": "0000-0003-0514-1147"
},
{
"family_name": "Morley",
"given_name": "Caroline",
"orcid": "0000-0002-4404-0456"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Morales",
"given_name": "Farisa Y.",
"orcid": "0000-0001-9414-3851",
"clpid": "Morales-Farisa-Y"
},
{
"family_name": "Scott",
"given_name": "Nicholas J.",
"orcid": "0000-0003-1038-9702"
},
{
"family_name": "Crane",
"given_name": "Jeffrey D.",
"orcid": "0000-0002-5226-787X"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Grunblatt",
"given_name": "Samuel K.",
"orcid": "0000-0003-4976-9980"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Villanueva",
"given_name": "Chiara Dane"
},
{
"family_name": "Liu",
"given_name": "Qingtian"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Mayo",
"given_name": "Andrew W.",
"orcid": "0000-0002-7216-2135"
}
],
"abstract": "HD 106315 and GJ 9827 are two bright, nearby stars that host multiple super-Earths and sub-Neptunes discovered by K2 that are well suited for atmospheric characterization. We refined the planets' ephemerides through Spitzer transits, enabling accurate transit prediction required for future atmospheric characterization through transmission spectroscopy. Through a multiyear high-cadence observing campaign with Keck/High Resolution Echelle Spectrometer and Magellan/Planet Finder Spectrograph, we improved the planets' mass measurements in anticipation of Hubble Space Telescope transmission spectroscopy. For GJ 9827, we modeled activity-induced radial velocity signals with a Gaussian process informed by the Calcium II H&K lines in order to more accurately model the effect of stellar noise on our data. We measured planet masses of M_b = 4.87 \u00b1 0.37 M_\u2295, M_c = 1.92 \u00b1 0.49 M_\u2295, and M_d = 3.42 \u00b1 0.62 M_\u2295. For HD 106315, we found that such activity radial velocity decorrelation was not effective due to the reduced presence of spots and speculate that this may extend to other hot stars as well (T_(eff) > 6200 K). We measured planet masses of M_b = 10.5 \u00b1 3.1 M_\u2295 and M_c = 12.0 \u00b1 3.8 M_\u2295. We investigated all of the planets' compositions through comparison of their masses and radii to a range of interior models. GJ 9827 b and GJ 9827 c are both consistent with a 50/50 rock-iron composition, GJ 9827 d and HD 106315 b both require additional volatiles and are consistent with moderate amounts of water or hydrogen/helium, and HD 106315 c is consistent with a ~10% hydrogen/helium envelope surrounding an Earth-like rock and iron core.",
"doi": "10.3847/1538-3881/abca39",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-01",
"series_number": "1",
"volume": "161",
"issue": "1",
"pages": "Art. No. 147"
},
{
"id": "authors:tcach-13953",
"collection": "authors",
"collection_id": "tcach-13953",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210119-100336493",
"type": "book_section",
"title": "Keck Planet Finder: design updates",
"book_title": "Ground-based and Airborne Instrumentation for Astronomy VIII",
"author": [
{
"family_name": "Gibson",
"given_name": "Steven R.",
"clpid": "Gibson-Steven-R"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Rider",
"given_name": "Kodi"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775",
"clpid": "Roy-Arpita"
},
{
"family_name": "Edelstein",
"given_name": "Jerry"
},
{
"family_name": "Kassis",
"given_name": "Marc"
},
{
"family_name": "Grillo",
"given_name": "Jason"
},
{
"family_name": "Halverson",
"given_name": "Sam",
"orcid": "0000-0003-1312-9391",
"clpid": "Halverson-Samuel-P"
},
{
"family_name": "Sirk",
"given_name": "Martin M."
},
{
"family_name": "Smith",
"given_name": "Christopher"
},
{
"family_name": "Allen",
"given_name": "Steve"
},
{
"family_name": "Baker",
"given_name": "Ashley",
"clpid": "Baker-Ashley"
},
{
"family_name": "Beichman",
"given_name": "Charles",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Berriman",
"given_name": "Bruce",
"orcid": "0000-0001-8388-534X",
"clpid": "Berriman-G-Bruce"
},
{
"family_name": "Brown",
"given_name": "Thomas M.",
"orcid": "0000-0002-1793-9968"
},
{
"family_name": "Casey",
"given_name": "Kelleen"
},
{
"family_name": "Chin",
"given_name": "Jason W.",
"orcid": "0000-0003-1219-4757"
},
{
"family_name": "Coutts",
"given_name": "David W."
},
{
"family_name": "Cowley",
"given_name": "David"
},
{
"family_name": "Deich",
"given_name": "William"
},
{
"family_name": "Feger",
"given_name": "Tobias"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Gers",
"given_name": "Luke"
},
{
"family_name": "Gurevich",
"given_name": "Yulia V."
},
{
"family_name": "Ishikawa",
"given_name": "Yuzo"
},
{
"family_name": "James",
"given_name": "Ean"
},
{
"family_name": "Jelinsky",
"given_name": "Sharon"
},
{
"family_name": "Kaye",
"given_name": "Stephen",
"clpid": "Kaye-Stephen"
},
{
"family_name": "Lanclos",
"given_name": "Kyle"
},
{
"family_name": "Li",
"given_name": "Adela"
},
{
"family_name": "Lilley",
"given_name": "Scott"
},
{
"family_name": "McCarney",
"given_name": "Ben"
},
{
"family_name": "Miller",
"given_name": "Tim"
},
{
"family_name": "Milner",
"given_name": "Steve"
},
{
"family_name": "O'Hanlon",
"given_name": "Timothy J."
},
{
"family_name": "Pember",
"given_name": "Jacob"
},
{
"family_name": "Raffanti",
"given_name": "Mike"
},
{
"family_name": "Rockosi",
"given_name": "Constance"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-Ryan-A"
},
{
"family_name": "Rumph",
"given_name": "Dave",
"clpid": "Rumph-Dave"
},
{
"family_name": "Sandford",
"given_name": "Dale"
},
{
"family_name": "Savage",
"given_name": "Maureen"
},
{
"family_name": "Schwab",
"given_name": "Christian",
"orcid": "0000-0002-4046-987X"
},
{
"family_name": "Seifahrt",
"given_name": "Andreas"
},
{
"family_name": "Shaum",
"given_name": "Abby",
"clpid": "Shaum-Abby"
},
{
"family_name": "Smith",
"given_name": "Roger",
"orcid": "0000-0001-7062-9726",
"clpid": "Smith-R-M"
},
{
"family_name": "Stuermer",
"given_name": "Julian"
},
{
"family_name": "Thorne",
"given_name": "Jim"
},
{
"family_name": "Vandenberg",
"given_name": "Adam"
},
{
"family_name": "Von Boeckmann",
"given_name": "Tod"
},
{
"family_name": "Wang",
"given_name": "Cindy",
"clpid": "Wang-Cindy"
},
{
"family_name": "Wang",
"given_name": "Qifang",
"clpid": "Wang-Qifang"
},
{
"family_name": "Weisfeiler",
"given_name": "Marie"
},
{
"family_name": "Wilcox",
"given_name": "Mavourneen"
},
{
"family_name": "Wishnow",
"given_name": "Edward H."
},
{
"family_name": "Wizinowich",
"given_name": "Peter",
"orcid": "0000-0002-1646-442X"
},
{
"family_name": "Wold",
"given_name": "Truman"
},
{
"family_name": "Wolfenberger",
"given_name": "Anna"
}
],
"contributor": [
{
"family_name": "Evans",
"given_name": "Christopher J.",
"clpid": "Evans-Christopher-J"
},
{
"family_name": "Bryant",
"given_name": "Julia J.",
"clpid": "Bryant-Julia-J"
},
{
"family_name": "Motohara",
"given_name": "Kentaro",
"clpid": "Motohara-Kentaro"
}
],
"abstract": "The Keck Planet Finder (KPF) is a fiber-fed, high-resolution, high-stability spectrometer in development at the UC Berkeley Space Sciences Laboratory for the W.M. Keck Observatory. KPF is designed to characterize exoplanets via Doppler spectroscopy with a goal of a single measurement precision of 0.3 m s-1 or better, however its resolution and stability will enable a wide variety of astrophysical pursuits. Here we provide post-preliminary design review design updates for several subsystems, including: the main spectrometer, the fabrication of the Zerodur optical bench; the data reduction pipeline; fiber agitator; fiber cable design; fiber scrambler; VPH testing results and the exposure meter.",
"doi": "10.1117/12.2561783",
"isbn": "9781510636811",
"publisher": "Society of Photo-Optical Instrumentation Engineers (SPIE)",
"place_of_publication": "Bellingham, WA",
"publication_date": "2020-12-13",
"pages": "Art. No. 1144742"
},
{
"id": "authors:yfmsj-7mz08",
"collection": "authors",
"collection_id": "yfmsj-7mz08",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210125-123056729",
"type": "article",
"title": "The CARMENES search for exoplanets around M dwarfs:\n LP 714-47 b (TOI 442.01): populating the Neptune desert",
"author": [
{
"family_name": "Dreizler",
"given_name": "S.",
"orcid": "0000-0001-6187-5941",
"clpid": "Dreizler-Stefan"
},
{
"family_name": "Crossfield",
"given_name": "I. J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Kossakowski",
"given_name": "D.",
"orcid": "0000-0002-0436-7833"
},
{
"family_name": "Plavchan",
"given_name": "P.",
"orcid": "0000-0002-8864-1667"
},
{
"family_name": "Jeffers",
"given_name": "S. V."
},
{
"family_name": "Kemmer",
"given_name": "J.",
"orcid": "0000-0003-3929-1442"
},
{
"family_name": "Luque",
"given_name": "R.",
"orcid": "0000-0002-4671-2957"
},
{
"family_name": "Espinoza",
"given_name": "N.",
"orcid": "0000-0001-9513-1449"
},
{
"family_name": "Pall\u00e9",
"given_name": "E.",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Stassun",
"given_name": "K.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Matthews",
"given_name": "E.",
"orcid": "0000-0003-0593-1560"
},
{
"family_name": "Cale",
"given_name": "B."
},
{
"family_name": "Caballero",
"given_name": "J. A."
},
{
"family_name": "Schlecker",
"given_name": "M."
},
{
"family_name": "Lillo-Box",
"given_name": "J.",
"orcid": "0000-0003-3742-1987"
},
{
"family_name": "Zechmeister",
"given_name": "M."
},
{
"family_name": "Lalitha",
"given_name": "S."
},
{
"family_name": "Reiners",
"given_name": "A."
},
{
"family_name": "Soubkiou",
"given_name": "A."
},
{
"family_name": "Bitsch",
"given_name": "B.",
"orcid": "0000-0002-8868-7649"
},
{
"family_name": "Zapatero Osorio",
"given_name": "M. R."
},
{
"family_name": "Chaturvedi",
"given_name": "P."
},
{
"family_name": "Hatzes",
"given_name": "A. P."
},
{
"family_name": "Ricker",
"given_name": "G.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "R.",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Latham",
"given_name": "D. W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "J.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Jenkins",
"given_name": "J. M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Aceituno",
"given_name": "J."
},
{
"family_name": "Amado",
"given_name": "P. J."
},
{
"family_name": "Barkaoui",
"given_name": "K.",
"orcid": "0000-0003-1464-9276"
},
{
"family_name": "Barbieri",
"given_name": "M.",
"clpid": "Barbieri-M"
},
{
"family_name": "Batalha",
"given_name": "N.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Bauer",
"given_name": "F. F."
},
{
"family_name": "Benneke",
"given_name": "B.",
"orcid": "0000-0001-5578-1498"
},
{
"family_name": "Benkhaldoun",
"given_name": "Z.",
"orcid": "0000-0001-6285-9847"
},
{
"family_name": "Beichman",
"given_name": "C.",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Berberian",
"given_name": "J."
},
{
"family_name": "Burt",
"given_name": "J.",
"orcid": "0000-0002-0040-6815",
"clpid": "Burt-Jennifer"
},
{
"family_name": "Butler",
"given_name": "R. P.",
"orcid": "0000-0003-1305-3761"
},
{
"family_name": "Caldwell",
"given_name": "D. A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Chintada",
"given_name": "A."
},
{
"family_name": "Chontos",
"given_name": "A."
},
{
"family_name": "Christiansen",
"given_name": "J. L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Ciardi",
"given_name": "D. R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Cifuentes",
"given_name": "C.",
"orcid": "0000-0003-1715-5087"
},
{
"family_name": "Collins",
"given_name": "K. A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Collins",
"given_name": "K. I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Combs",
"given_name": "D."
},
{
"family_name": "Cort\u00e9s-Contreras",
"given_name": "M."
},
{
"family_name": "Crane",
"given_name": "J. D.",
"orcid": "0000-0002-5226-787X"
},
{
"family_name": "Daylan",
"given_name": "T."
},
{
"family_name": "Dragomir",
"given_name": "D.",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Esparza-Borges",
"given_name": "E.",
"orcid": "0000-0002-2341-3233"
},
{
"family_name": "Evans",
"given_name": "P.",
"orcid": "0000-0002-8465-3353"
},
{
"family_name": "Feng",
"given_name": "F."
},
{
"family_name": "Flowers",
"given_name": "E. E."
},
{
"family_name": "Fukui",
"given_name": "A.",
"orcid": "0000-0002-4909-5763"
},
{
"family_name": "Fulton",
"given_name": "B.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Furlan",
"given_name": "E.",
"orcid": "0000-0001-9800-6248",
"clpid": "Furlan-Elise"
},
{
"family_name": "Gaidos",
"given_name": "E.",
"orcid": "0000-0002-5258-6846"
},
{
"family_name": "Geneser",
"given_name": "C."
},
{
"family_name": "Giacalone",
"given_name": "S.",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Gillon",
"given_name": "M.",
"orcid": "0000-0003-1462-7739"
},
{
"family_name": "Gonzales",
"given_name": "E."
},
{
"family_name": "Gorjian",
"given_name": "V.",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
},
{
"family_name": "Hellier",
"given_name": "C.",
"orcid": "0000-0002-3439-1439"
},
{
"family_name": "Hidalgo",
"given_name": "D."
},
{
"family_name": "Howard",
"given_name": "A. W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Howell",
"given_name": "S.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Huber",
"given_name": "D.",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Isaacson",
"given_name": "H.",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Jehin",
"given_name": "E.",
"orcid": "0000-0001-8923-488X"
},
{
"family_name": "Jensen",
"given_name": "E. L. N.",
"orcid": "0000-0002-4625-7333"
},
{
"family_name": "Kaminski",
"given_name": "A."
},
{
"family_name": "Kane",
"given_name": "S. R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Kawauchi",
"given_name": "K.",
"orcid": "0000-0003-1205-5108"
},
{
"family_name": "Kielkopf",
"given_name": "J. F."
},
{
"family_name": "Klahr",
"given_name": "H."
},
{
"family_name": "Kosiarek",
"given_name": "M. R."
},
{
"family_name": "Kreidberg",
"given_name": "L.",
"orcid": "0000-0003-0514-1147"
},
{
"family_name": "K\u00fcrster",
"given_name": "M.",
"clpid": "K\u00fcrster-Martin"
},
{
"family_name": "Lafarga",
"given_name": "M."
},
{
"family_name": "Livingston",
"given_name": "J.",
"orcid": "0000-0002-4881-3620"
},
{
"family_name": "Louie",
"given_name": "D."
},
{
"family_name": "Mann",
"given_name": "A.",
"orcid": "0000-0003-3654-1602"
},
{
"family_name": "Madrigal-Aguado",
"given_name": "A.",
"orcid": "0000-0002-9510-0893"
},
{
"family_name": "Matson",
"given_name": "R. A.",
"orcid": "0000-0001-7233-7508"
},
{
"family_name": "Mocnik",
"given_name": "T."
},
{
"family_name": "Morales",
"given_name": "J. C."
},
{
"family_name": "Muirhead",
"given_name": "P. S.",
"orcid": "0000-0002-0638-8822"
},
{
"family_name": "Murgas",
"given_name": "F.",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Nandakumar",
"given_name": "S."
},
{
"family_name": "Narita",
"given_name": "N.",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Nowak",
"given_name": "G.",
"orcid": "0000-0002-7031-7754"
},
{
"family_name": "Oshagh",
"given_name": "M.",
"orcid": "0000-0002-0715-8789"
},
{
"family_name": "Parviainen",
"given_name": "H.",
"orcid": "0000-0001-5519-1391"
},
{
"family_name": "Passegger",
"given_name": "V. M."
},
{
"family_name": "Pollacco",
"given_name": "D."
},
{
"family_name": "Pozuelos",
"given_name": "E. J."
},
{
"family_name": "Quirrenbach",
"given_name": "A.",
"orcid": "0000-0002-8388-6040"
},
{
"family_name": "Reefe",
"given_name": "M.",
"orcid": "0000-0003-4701-8497"
},
{
"family_name": "Ribas",
"given_name": "I."
},
{
"family_name": "Robertson",
"given_name": "P.",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Rodr\u00edguez-L\u00f3pez",
"given_name": "C."
},
{
"family_name": "Rose",
"given_name": "M. E."
},
{
"family_name": "Roy",
"given_name": "A.",
"orcid": "0000-0001-8127-5775",
"clpid": "Roy-Arpita"
},
{
"family_name": "Schweitzer",
"given_name": "A."
},
{
"family_name": "Schlieder",
"given_name": "J.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Shectman",
"given_name": "S."
},
{
"family_name": "Tanner",
"given_name": "A.",
"orcid": "0000-0002-2903-2140"
},
{
"family_name": "\u015eenavc\u0131",
"given_name": "H. V."
},
{
"family_name": "Teske",
"given_name": "J."
},
{
"family_name": "Twicken",
"given_name": "J. D.",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Villasenor",
"given_name": "J."
},
{
"family_name": "Wang",
"given_name": "S. X."
},
{
"family_name": "Weiss",
"given_name": "L. M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Wittrock",
"given_name": "J.",
"orcid": "0000-0002-7424-9891"
},
{
"family_name": "Y\u0131lmaz",
"given_name": "M."
},
{
"family_name": "Zohrabi",
"given_name": "F."
}
],
"abstract": "We report the discovery of a Neptune-like planet (LP 714-47 b, P = 4.05204 d, m_b = 30.8 \u00b1 1.5 M_\u2295, R_b = 4.7 \u00b1 0.3 R_\u2295) located in the \"hot Neptune desert\". Confirmation of the TESS Object of Interest (TOI 442.01) was achieved with radial-velocity follow-up using CARMENES, ESPRESSO, HIRES, iSHELL, and PFS, as well as from photometric data using TESS, Spitzer, and ground-based photometry from MuSCAT2, TRAPPIST-South, MONET-South, the George Mason University telescope, the Las Cumbres Observatory Global Telescope network, the El Sauce telescope, the T\u00dcB\u0130TAK National Observatory, the University of Louisville Manner Telescope, and WASP-South. We also present high-spatial resolution adaptive optics imaging with the Gemini Near-Infrared Imager. The low uncertainties in the mass and radius determination place LP 714-47 b among physically well-characterised planets, allowing for a meaningful comparison with planet structure models. The host star LP 714-47 is a slowly rotating early M dwarf (T_(eff) = 3950 \u00b1 51 K) with a mass of 0.59 \u00b1 0.02 M_\u2299 and a radius of 0.58 \u00b1 0.02 R_\u2299. From long-term photometric monitoring and spectroscopic activity indicators, we determine a stellar rotation period of about 33 d. The stellar activity is also manifested as correlated noise in the radial-velocity data. In the power spectrum of the radial-velocity data, we detect a second signal with a period of 16 days in addition to the four-day signal of the planet. This could be shown to be a harmonic of the stellar rotation period or the signal of a second planet. It may be possible to tell the difference once more TESS data and radial-velocity data are obtained.",
"doi": "10.1051/0004-6361/202038016",
"issn": "0004-6361",
"publisher": "EDP Sciences",
"publication": "Astronomy and Astrophysics",
"publication_date": "2020-12",
"volume": "644",
"pages": "Art. No. A127"
},
{
"id": "authors:g1kxn-z2016",
"collection": "authors",
"collection_id": "g1kxn-z2016",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200916-112854779",
"type": "article",
"title": "The TESS-Keck Survey. III. A Stellar Obliquity Measurement of TOI-1726 c",
"author": [
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775",
"clpid": "Roy-Arpita"
},
{
"family_name": "Fulton",
"given_name": "Benjamin",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
},
{
"family_name": "Hirsch",
"given_name": "Lea",
"orcid": "0000-0001-8058-7443"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Albrecht",
"given_name": "Simon",
"orcid": "0000-0003-1762-8235"
},
{
"family_name": "Mann",
"given_name": "Andrew W.",
"orcid": "0000-0003-3654-1602"
},
{
"family_name": "Kristiansen",
"given_name": "Martti H.",
"orcid": "0000-0002-2607-138X"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Beard",
"given_name": "Corey",
"orcid": "0000-0001-7708-2364"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Hill",
"given_name": "Michelle",
"orcid": "0000-0002-0139-4756"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Mayo",
"given_name": "Andrew",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mocnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
},
{
"family_name": "Murphy",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"family_name": "Rosenthal",
"given_name": "Lee",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
"orcid": "0000-0003-3856-3143",
"clpid": "Rubenzahl-R-A"
},
{
"family_name": "Scarsdale",
"given_name": "Nicholas",
"orcid": "0000-0003-3623-7280"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Charbonneau",
"given_name": "David",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Daylan",
"given_name": "Tansu",
"orcid": "0000-0002-6939-9211"
},
{
"family_name": "G\u00fcnther",
"given_name": "Maximilian N.",
"orcid": "0000-0002-3164-9086"
},
{
"family_name": "Morgan",
"given_name": "Edward",
"orcid": "0000-0003-1447-6344"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Rose",
"given_name": "Mark E.",
"orcid": "0000-0003-4724-745X"
},
{
"family_name": "Smith",
"given_name": "Jeffrey C."
}
],
"abstract": "We report the measurement of a spectroscopic transit of TOI-1726c, one of two planets transiting a G-type star with V = 6.9 in the Ursa Major Moving Group (~400 Myr). With a precise age constraint from cluster membership, TOI-1726 provides a great opportunity to test various obliquity excitation scenarios that operate on different timescales. By modeling the Rossiter\u2013McLaughlin (RM) effect, we derived a sky-projected obliquity of \u22121^(+35)_(\u221232)\u2218. This result rules out a polar/retrograde orbit and is consistent with an aligned orbit for planet c. Considering the previously reported, similarly prograde RM measurement of planet b and the transiting nature of both planets, TOI-1726 tentatively conforms to the overall picture that compact multitransiting planetary systems tend to have coplanar, likely aligned orbits. TOI-1726 is also a great atmospheric target for understanding differential atmospheric loss of sub-Neptune planets (planet b 2.2 R\u2295 and c 2.7 R\u2295 both likely underwent photoevaporation). The coplanar geometry points to a dynamically cold history of the system that simplifies any future modeling of atmospheric escape.",
"doi": "10.3847/1538-3881/abb3bd",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2020-10",
"series_number": "4",
"volume": "160",
"issue": "4",
"pages": "Art. No. 193"
},
{
"id": "authors:kn3d6-hxr31",
"collection": "authors",
"collection_id": "kn3d6-hxr31",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200727-092618134",
"type": "article",
"title": "Dynamical Packing in the Habitable Zone: The Case of Beta CVn",
"author": [
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Turnbull",
"given_name": "Margaret C.",
"orcid": "0000-0002-0569-1643",
"clpid": "Turnbull-Margaret-C"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Marcy",
"given_name": "Geoffrey W.",
"orcid": "0000-0002-2909-0113",
"clpid": "Marcy-Geoffrey-W"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
}
],
"abstract": "Uncovering the occurrence rate of terrestrial planets within the habitable zone (HZ) of their host stars has been a particular focus of exoplanetary science in recent years. The statistics of these occurrence rates have largely been derived from transiting planet discoveries, and have uncovered numerous HZ planets in compact systems around M-dwarf host stars. Here we explore the width of the HZ as a function of spectral type, and the dynamical constraints on the number of stable orbits within the HZ for a given star. We show that, although the Hill radius for a given planetary mass increases with larger semimajor axis, the width of the HZ for earlier-type stars allows for more terrestrial planets in the HZ than late-type stars. In general, dynamical constraints allow ~6 HZ Earth-mass planets for stellar masses \u22730.7M\u2299, depending on the presence of farther out giant planets. As an example, we consider the case of Beta CVn, a nearby bright solar-type star. We present 20 yr of radial velocities (RV) from the Keck/High Resolution Echelle Spectrometer (HIRES) and Automated Planet Finder (APF) instruments and conduct an injection-recovery analysis of planetary signatures in the data. Our analysis of these RV data rule out planets more massive than Saturn within 10 au of the star. These system properties are used to calculate the potential dynamical packing of terrestrial planets in the HZ and show that such nearby stellar targets could be particularly lucrative for HZ planet detection by direct imaging exoplanet missions.",
"doi": "10.3847/1538-3881/ab9ffe",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2020-08",
"series_number": "2",
"volume": "160",
"issue": "2",
"pages": "Art. No. 81"
},
{
"id": "authors:1vq6t-wyp43",
"collection": "authors",
"collection_id": "1vq6t-wyp43",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200409-115738361",
"type": "article",
"title": "Orbital Refinement and Stellar Properties for the HD 9446, HD 43691, and HD 179079 Planetary Systems",
"author": [
{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756",
"clpid": "Hill-Michelle-L"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X",
"clpid": "Mo\u010dnik-Teo"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Henry",
"given_name": "Gregory W.",
"orcid": "0000-0003-4155-8513",
"clpid": "Henry-Gregory-W"
},
{
"family_name": "Pepper",
"given_name": "Joshua",
"orcid": "0000-0002-3827-8417",
"clpid": "Pepper-Joshua"
},
{
"family_name": "Hinkel",
"given_name": "Natalie R.",
"orcid": "0000-0003-0595-5132",
"clpid": "Hinkel-Natalie-R"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052",
"clpid": "Stassun-Keivan-G"
},
{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853",
"clpid": "Howell-Steve-B"
},
{
"family_name": "Everett",
"given_name": "Mark E.",
"orcid": "0000-0002-0885-7215",
"clpid": "Everett-Mark-E"
},
{
"family_name": "Boyajian",
"given_name": "Tabetha S.",
"orcid": "0000-0001-9879-9313",
"clpid": "Boyajian-Tabetha-S"
},
{
"family_name": "Fischer",
"given_name": "Debra A.",
"orcid": "0000-0003-2221-0861",
"clpid": "Fischer-Debra-A"
},
{
"family_name": "Rodriguez",
"given_name": "Joseph E.",
"orcid": "0000-0001-8812-0565",
"clpid": "Rodriguez-Joseph-E"
},
{
"family_name": "Beatty",
"given_name": "Thomas G.",
"orcid": "0000-0002-9539-4203",
"clpid": "Beatty-Thomas-G"
},
{
"family_name": "James",
"given_name": "David J.",
"orcid": "0000-0001-5160-4486",
"clpid": "James-David-J"
}
],
"abstract": "The Transit Ephemeris Refinement and Monitoring Survey is a project that aims to detect transits of intermediate-long period planets by refining orbital parameters of the known radial velocity planets using additional data from ground-based telescopes, calculating a revised transit ephemeris for the planet, then monitoring the planet host star during the predicted transit window. Here we present the results from three systems that had high probabilities of transiting planets: HD 9446 b and c, HD 43691 b, and HD 179079 b. We provide new radial velocity (RV) measurements that are then used to improve the orbital solution for the known planets. We search the RV data for indications of additional planets in orbit and find that HD 9446 shows a strong linear trend of 4.8\u03c3. Using the newly refined planet orbital solutions, which include a new best-fit solution for the orbital period of HD 9446 c, and an improved transit ephemerides, we found no evidence of transiting planets in the photometry for each system. Transits of HD 9446 b can be ruled out completely and transits HD 9446 c and HD 43691 b can be ruled out for impact parameters up to b = 0.5778 and b = 0.898, respectively, due to gaps in the photometry. A transit of HD 179079 b cannot be ruled out, however, due to the relatively small size of this planet compared to the large star and thus low signal to noise. We determine properties of the three host stars through spectroscopic analysis and find through photometric analysis that HD 9446 exhibits periodic variability.",
"doi": "10.3847/1538-3881/ab7d33",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2020-05",
"series_number": "5",
"volume": "159",
"issue": "5",
"pages": "Art. No. 197"
},
{
"id": "authors:1y7j0-0b964",
"collection": "authors",
"collection_id": "1y7j0-0b964",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200420-102122839",
"type": "article",
"title": "The TESS-Keck Survey I: A Warm Sub-Saturn-Mass Planet and a Caution about Stray Light in TESS Cameras",
"author": [
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Gupta",
"given_name": "Arvind F.",
"orcid": "0000-0002-5463-9980"
},
{
"family_name": "Rodriguez",
"given_name": "Joseph E.",
"orcid": "0000-0001-8812-0565"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
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{
"family_name": "Huang",
"given_name": "Chelsea X.",
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{
"family_name": "Kane",
"given_name": "Stephen R.",
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{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
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{
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"given_name": "Allyson",
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{
"family_name": "Esquerdo",
"given_name": "Gilbert A.",
"orcid": "0000-0002-9789-5474"
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{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
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{
"family_name": "Scarsdale",
"given_name": "Nicholas",
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{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
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{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
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{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
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{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
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{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
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{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
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{
"family_name": "Robertson",
"given_name": "Paul",
"orcid": "0000-0003-0149-9678"
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{
"family_name": "Roy",
"given_name": "Arpita",
"orcid": "0000-0001-8127-5775",
"clpid": "Roy-Arpita"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058"
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{
"family_name": "Knudstrup",
"given_name": "Emil",
"orcid": "0000-0001-7880-594X"
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{
"family_name": "Andersen",
"given_name": "Mads F."
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{
"family_name": "Grundahl",
"given_name": "Frank"
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{
"family_name": "Yao",
"given_name": "Xinyu"
},
{
"family_name": "Pepper",
"given_name": "Joshua",
"orcid": "0000-0002-3827-8417"
},
{
"family_name": "Villanueva",
"given_name": "Steven, Jr.",
"orcid": "0000-0001-6213-8804"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Cloutier",
"given_name": "Ryan",
"orcid": "0000-0001-5383-9393"
},
{
"family_name": "Jacobs",
"given_name": "Thomas Lee"
},
{
"family_name": "Kristiansen",
"given_name": "Martti H.",
"orcid": "0000-0002-2607-138X"
},
{
"family_name": "LaCourse",
"given_name": "Daryll M."
},
{
"family_name": "Lendl",
"given_name": "Monika"
},
{
"family_name": "Osborn",
"given_name": "Hugh P.",
"orcid": "0000-0002-4047-4724"
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{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Stevens",
"given_name": "Daniel J.",
"orcid": "0000-0002-5951-8328"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
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{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
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{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
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{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
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{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
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{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
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{
"family_name": "Daylan",
"given_name": "Tansu",
"orcid": "0000-0002-6939-9211",
"clpid": "Daylan-Tansu"
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{
"family_name": "Fong",
"given_name": "William",
"orcid": "0000-0001-7416-7522"
},
{
"family_name": "Goeke",
"given_name": "Robert F.",
"orcid": "0000-0003-1748-5975"
},
{
"family_name": "Rose",
"given_name": "Mark E.",
"orcid": "0000-0003-4724-745X"
},
{
"family_name": "Rowden",
"given_name": "Pamela",
"orcid": "0000-0002-4829-7101"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Smith",
"given_name": "Jeffrey C.",
"orcid": "0000-0002-6148-7903"
},
{
"family_name": "Vanderburg",
"given_name": "Andrew",
"orcid": "0000-0001-7246-5438"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093",
"clpid": "Behmard-Aida"
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{
"family_name": "Rosenthal",
"given_name": "Lee J.",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
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{
"family_name": "Rubenzahl",
"given_name": "Ryan A.",
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"abstract": "We report the detection of a Saturn-size exoplanet orbiting HD 332231 (TOI 1456) in light curves from the Transiting Exoplanet Survey Satellite (TESS). HD 332231\u2014an F8 dwarf star with a V-band magnitude of 8.56\u2014was observed by TESS in Sectors 14 and 15. We detect a single-transit event in the Sector 15 presearch data conditioning (PDC) light curve. We obtain spectroscopic follow-up observations of HD 332231 with the Automated Planet Finder, Keck I, and SONG telescopes. The orbital period we infer from radial velocity (RV) observations leads to the discovery of another transit in Sector 14 that was masked by PDC due to scattered light contamination. A joint analysis of the transit and RV data confirms the planetary nature of HD 332231 b, a Saturn-size (0.867^(+0.027)_(\u22120.025) R_J), sub-Saturn-mass (0.244\u00b10.021M_J) exoplanet on a 18.71 day circular orbit. The low surface gravity of HD 332231 b and the relatively low stellar flux it receives make it a compelling target for transmission spectroscopy. Also, the stellar obliquity is likely measurable via the Rossiter\u2013McLaughlin effect, an exciting prospect given the 0.14 au orbital separation of HD 332231 b. The spectroscopic observations do not provide substantial evidence for any additional planets in the HD 332231 system, but continued RV monitoring is needed to further characterize this system. We also predict that the frequency and duration of masked data in the PDC light curves for TESS Sectors 14\u201316 could hide transits of some exoplanets with orbital periods between 10.5 and 17.5 days.",
"doi": "10.3847/1538-3881/ab84e3",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2020-05",
"series_number": "5",
"volume": "159",
"issue": "5",
"pages": "Art. No. 241"
},
{
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"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20200420-100331561",
"type": "article",
"title": "Updated Parameters and a New Transmission Spectrum of HD 97658b",
"author": [
{
"family_name": "Guo",
"given_name": "Xueying",
"clpid": "Guo-Xueying"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X",
"clpid": "Dragomir-Diana"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359",
"clpid": "Kosiarek-Molly-R"
},
{
"family_name": "Lothringer",
"given_name": "Joshua",
"orcid": "0000-0003-3667-8633",
"clpid": "Lothringer-Joshua-D"
},
{
"family_name": "Mikal-Evans",
"given_name": "Thomas",
"orcid": "0000-0001-5442-1300",
"clpid": "Mikal-Evans-Thomas"
},
{
"family_name": "Rosenthal",
"given_name": "Lee",
"orcid": "0000-0001-8391-5182",
"clpid": "Rosenthal-Lee-J"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498",
"clpid": "Benneke-Bj\u00f6rn"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506",
"clpid": "Dalba-Paul-A"
},
{
"family_name": "Kempton",
"given_name": "Eliza M. R.",
"orcid": "0000-0002-1337-9051",
"clpid": "Kempton-Eliza-M-R"
},
{
"family_name": "Henry",
"given_name": "Gregory W.",
"orcid": "0000-0003-4155-8513",
"clpid": "Henry-Gregory-W"
},
{
"family_name": "McCullough",
"given_name": "P. R.",
"orcid": "0000-0001-9165-9799",
"clpid": "McCullough-Peter-R"
},
{
"family_name": "Barman",
"given_name": "Travis",
"orcid": "0000-0002-7129-3002",
"clpid": "Barman-Travis-S"
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{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah-C"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564",
"clpid": "Chontos-Ashley"
},
{
"family_name": "Fortney",
"given_name": "Jonathan",
"orcid": "0000-0002-9843-4354",
"clpid": "Fortney-Jonathan-J"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Hirsch",
"given_name": "Lea",
"orcid": "0000-0001-8058-7443",
"clpid": "Hirsch-Lea-A"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Matthews",
"given_name": "Jaymie",
"orcid": "0000-0002-4461-080X",
"clpid": "Matthews-Jaymie-M"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X",
"clpid": "Mo\u010dnik-Teo"
},
{
"family_name": "Morley",
"given_name": "Caroline",
"orcid": "0000-0002-4404-0456",
"clpid": "Morley-Caroline-V"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Weiss",
"given_name": "Lauren M.",
"orcid": "0000-0002-3725-3058",
"clpid": "Weiss-Lauren-M"
}
],
"abstract": "Recent years have seen increasing interest in the characterization of sub-Neptune-sized planets because of their prevalence in the Galaxy, contrasted with their absence in our solar system. HD 97658 is one of the brightest stars hosting a planet of this kind, and we present the transmission spectrum of this planet by combining four Hubble Space Telescope transits, 12 Spitzer/IRAC transits, and eight MOST transits of this system. Our transmission spectrum has a higher signal-to-noise ratio than those from previous works, and the result suggests that the slight increase in transit depth from wavelength 1.1\u20131.7 \u03bcm reported in previous works on the transmission spectrum of this planet is likely systematic. Nonetheless, our atmospheric modeling results are inconclusive, as no model provides an excellent match to our data. Nonetheless, we find that atmospheres with high C/O ratios (C/O \u2273 0.8) and metallicities of \u2273100\u00d7 solar metallicity are favored. We combine the mid-transit times from all of the new Spitzer and MOST observations and obtain an updated orbital period of P = 9.489295 \u00b1 0.000005, with a best-fit transit time center at T\u2080 = 2456361.80690 \u00b1 0.00038 (BJD). No transit timing variations are found in this system. We also present new measurements of the stellar rotation period (34 \u00b1 2 days) and stellar activity cycle (9.6 yr) of the host star HD 97658. Finally, we calculate and rank the Transmission Spectroscopy Metric of all confirmed planets cooler than 1000 K and with sizes between 1 R\u2295 and 4 R\u2295. We find that at least a third of small planets cooler than 1000 K can be well characterized using James Webb Space Telescope, and of those, HD 97658b is ranked fifth, meaning that it remains a high-priority target for atmospheric characterization.",
"doi": "10.3847/1538-3881/ab8815",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2020-05",
"series_number": "5",
"volume": "159",
"issue": "5",
"pages": "Art. No. 239"
},
{
"id": "authors:djr95-sg007",
"collection": "authors",
"collection_id": "djr95-sg007",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190515-082941689",
"type": "article",
"title": "A warm Jupiter-sized planet transiting the pre-main sequence star V1298 Tau",
"author": [
{
"family_name": "David",
"given_name": "Trevor J.",
"orcid": "0000-0001-6534-6246",
"clpid": "David-Trevor-J"
},
{
"family_name": "Cody",
"given_name": "Ann Marie",
"orcid": "0000-0002-3656-6706",
"clpid": "Cody-Ann-Marie"
},
{
"family_name": "Hedges",
"given_name": "Christina L.",
"orcid": "0000-0002-3385-8391",
"clpid": "Hedges-Christina-L"
},
{
"family_name": "Mamajek",
"given_name": "Eric E.",
"orcid": "0000-0003-2008-1488",
"clpid": "Mamajek-Eric-E"
},
{
"family_name": "Hillenbrand",
"given_name": "Lynne A.",
"clpid": "Hillenbrand-L-A"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Beichman",
"given_name": "Charles A.",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Fulton",
"given_name": "Benjamin J.",
"orcid": "0000-0003-3504-5316",
"clpid": "Fulton-Benjamin-J"
},
{
"family_name": "Isaacson",
"given_name": "Howard T.",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Gagn\u00e9",
"given_name": "Jonathan",
"orcid": "0000-0002-2592-9612",
"clpid": "Gagn\u00e9-Jonathan"
},
{
"family_name": "Saunders",
"given_name": "Nicholas K.",
"clpid": "Saunders-Nicholas-K"
},
{
"family_name": "Rebull",
"given_name": "Luisa M.",
"orcid": "0000-0001-6381-515X",
"clpid": "Rebull-Luisa-M"
},
{
"family_name": "Stauffer",
"given_name": "John R.",
"orcid": "0000-0003-3595-7382",
"clpid": "Stauffer-John-R"
},
{
"family_name": "Vasisht",
"given_name": "Gautam",
"orcid": "0000-0002-1871-6264",
"clpid": "Vasisht-Gautam"
},
{
"family_name": "Hinkley",
"given_name": "Sasha",
"orcid": "0000-0001-8074-2562",
"clpid": "Hinkley-Sasha"
}
],
"abstract": "We report the detection of V1298 Tau b, a warm Jupiter-sized planet (R_P = 0.91 \u00b1 0.05 R_(Jup), P = 24.1 days) transiting a young solar analog with an estimated age of 23 Myr. The star and its planet belong to Group 29, a young association in the foreground of the Taurus\u2013Auriga star-forming region. While hot Jupiters have been previously reported around young stars, those planets are non-transiting and near-term atmospheric characterization is not feasible. The V1298 Tau system is a compelling target for follow-up study through transmission spectroscopy and Doppler tomography owing to the transit depth (0.5%), host star brightness (K_s = 8.1 mag), and rapid stellar rotation (v sin i = 23 km s^(\u22121)). Although the planet is Jupiter-sized, its mass is currently unknown due to high-amplitude radial velocity jitter. Nevertheless, V1298 Tau b may help constrain formation scenarios for at least one class of close-in exoplanets, providing a window into the nascent evolution of planetary interiors and atmospheres.",
"doi": "10.3847/1538-3881/ab290f",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2019-08",
"series_number": "2",
"volume": "158",
"issue": "2",
"pages": "Art. No. 79"
}
]