[
{
"id": "authors:z5309-qg136",
"collection": "authors",
"collection_id": "z5309-qg136",
"cite_using_url": "https://authors.library.caltech.edu/records/z5309-qg136",
"type": "article",
"title": "From Earths to Super-Earths: Five New Small Planets Transiting M Dwarf Stars",
"author": [
{
"family_name": "Gomez Barrientos",
"given_name": "Jonathan",
"orcid": "0000-0002-0672-9658",
"clpid": "Gomez-Barrientos-Jonathan"
},
{
"family_name": "Knutson",
"given_name": "Heather A.",
"orcid": "0000-0002-5375-4725",
"clpid": "Knutson-H-A"
},
{
"family_name": "Saidel",
"given_name": "Morgan",
"orcid": "0000-0001-9518-9691",
"clpid": "Saidel-Morgan"
},
{
"family_name": "Greklek-McKeon",
"given_name": "Michael",
"orcid": "0000-0002-0371-1647",
"clpid": "Greklek-McKeon-Michael"
},
{
"family_name": "Levine",
"given_name": "W. Garrett",
"orcid": "0000-0002-1422-4430"
},
{
"family_name": "Saunders",
"given_name": "Nicholas",
"orcid": "0000-0003-2657-3889"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Hu",
"given_name": "Renyu",
"orcid": "0000-0003-2215-8485",
"clpid": "Hu-Renyu"
},
{
"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": "Budnikova",
"given_name": "Polina A.",
"orcid": "0009-0002-0733-572X"
},
{
"family_name": "Cheryasov",
"given_name": "Dmitry V.",
"orcid": "0009-0003-4203-9667"
},
{
"family_name": "Yee",
"given_name": "Samuel W.",
"orcid": "0000-0001-7961-3907"
},
{
"family_name": "Souto",
"given_name": "Diogo",
"orcid": "0000-0002-7883-5425"
},
{
"family_name": "Behmard",
"given_name": "Aida",
"orcid": "0000-0003-0012-9093"
},
{
"family_name": "Fukui",
"given_name": "Akihiko",
"orcid": "0000-0002-4909-5763"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Khandelwal",
"given_name": "Akanksha",
"orcid": "0000-0003-0335-6435"
},
{
"family_name": "Massey",
"given_name": "Bob",
"orcid": "0000-0001-8879-7138"
},
{
"family_name": "Demory",
"given_name": "Brice-Oliver",
"orcid": "0000-0002-9355-5165"
},
{
"family_name": "Clark",
"given_name": "Catherine A.",
"orcid": "0000-0002-2361-5812",
"clpid": "Clark-Catherine-A"
},
{
"family_name": "Stockdale",
"given_name": "Chris",
"orcid": "0000-0003-2163-1437"
},
{
"family_name": "Gilbert",
"given_name": "Emily A.",
"orcid": "0000-0002-0388-8004",
"clpid": "Gilbert-Emily-A"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Wilkin",
"given_name": "Francis P.",
"orcid": "0000-0003-2127-8952"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Lang",
"given_name": "Francis Zong"
},
{
"family_name": "Plauchu-Frayn",
"given_name": "Ilse"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Horne",
"given_name": "Keith",
"orcid": "0000-0003-1728-0304"
},
{
"family_name": "Gillon",
"given_name": "Micha\u00ebl",
"orcid": "0000-0003-1462-7739"
},
{
"family_name": "Lendl",
"given_name": "Monika",
"orcid": "0000-0001-9699-1459"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Rowden",
"given_name": "Pam",
"orcid": "0000-0002-4829-7101"
},
{
"family_name": "Sefako",
"given_name": "Ramotholo",
"orcid": "0000-0003-3904-6754"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven"
},
{
"family_name": "Schroffenegger",
"given_name": "Urs",
"orcid": "0009-0005-5046-203X"
},
{
"family_name": "G\u00f3mez Maqueo Chew",
"given_name": "Yilen",
"orcid": "0000-0002-7486-6726"
}
],
"abstract": "\n
Earth-sized planets transiting M dwarf stars present one of the best opportunities with current facilities for studying the atmospheric and bulk compositions of terrestrial worlds. Here, we statistically validate five new transiting Earth and super-Earth sized planets orbiting M dwarf stars using a combination of light curves from the Transiting Exoplanet Survey Satellite, multicolor observations from Palomar and Las Cumbres Observatory, high-resolution imaging, and stellar spectroscopy. The sample includes TOI-5716 b, an Earth-sized planet (Rp = 0.96 ± 0.05 R⊕) with a 6.766 day orbit around a metal-poor thin-disk star ([Fe/H] = −0.54 ± 0.10); TOI-5728 b, a super-Earth (Rp = 1.31 ± 0.05 R⊕) on an 11.497 day orbit; and TOI-5736 b, a larger planet (Rp = 1.56 ± 0.07 R⊕) with an ultrashort period of just 0.649 days. We also statistically validate a multiplanet system, TOI-5489, hosting two similarly sized super-Earths: TOI-5489 b (Rp = 1.40 ± 0.05 R⊕) and TOI-5489 c (Rp = 1.28 ± 0.07 R⊕) with orbital periods of 3.152 and 4.921 days, respectively. Due to their longer orbital periods, TOI-5716 b and TOI-5728 b both have equilibrium temperatures ≤ 400 K, making them useful test cases for studies of atmospheric mass loss. If TOI-5728 b is confirmed to have an Earth-like bulk composition, it would join the very small sample of rocky planets orbiting mid-to-late M dwarfs that lie below the cosmic shoreline and therefore may have retained high mean molecular weight atmospheres.
\n
Planet formation is expected to be severely limited in disks of low metallicity, owing to both the small solid mass reservoir and the low-opacity accelerating the disk gas dissipation. While previous studies have found a weak correlation between the occurrence rates of small planets (\u22724R ⊕) and stellar metallicity, so far no studies have probed below the metallicity limit beyond which planet formation is predicted to be suppressed. Here, we constructed a large catalog of ∼110,000 metal-poor stars observed by the TESS mission with spectroscopically derived metallicities, and systematically probed planet formation within the metal-poor regime ([Fe/H] ≤−0.5) for the first time. Extrapolating known higher-metallicity trends for small, short-period planets predicts the discovery of ∼68 super-Earths around these stars (∼85,000 stars) after accounting for survey completeness; however, we detect none. As a result, we have placed the most stringent upper limit on super-Earth occurrence rates around metal-poor stars (−0.75 < [Fe/H] ≤ −0.5) to date, ≤ 1.67%, a statistically significant (p-value = 0.000685) deviation from the prediction of metallicity trends derived with Kepler and K2. We find a clear host star metallicity cliff for super-Earths that could indicate the threshold below which planets are unable to grow beyond an Earth-mass at short orbital periods. This finding provides a crucial input to planet-formation theories, and has implications for the small planet inventory of the Galaxy and the galactic epoch at which the formation of small planets started.
",
"doi": "10.3847/1538-3881/ad6570",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2024-09",
"series_number": "3",
"volume": "168",
"issue": "3",
"pages": "128"
},
{
"id": "authors:dsakh-0ac20",
"collection": "authors",
"collection_id": "dsakh-0ac20",
"cite_using_url": "https://authors.library.caltech.edu/records/dsakh-0ac20",
"type": "article",
"title": "TESS Giants Transiting Giants. VI. Newly Discovered Hot Jupiters Provide Evidence for Efficient Obliquity Damping after the Main Sequence",
"author": [
{
"family_name": "Saunders",
"given_name": "Nicholas",
"orcid": "0000-0003-2657-3889"
},
{
"family_name": "Grunblatt",
"given_name": "Samuel K.",
"orcid": "0000-0003-4976-9980"
},
{
"family_name": "Chontos",
"given_name": "Ashley",
"orcid": "0000-0003-1125-2564"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Zhang \u5f20",
"given_name": "Jingwen \u5a67\u96ef",
"orcid": "0000-0002-2696-2406"
},
{
"family_name": "Stef\u00e1nsson",
"given_name": "Gu\u0111mundur",
"orcid": "0000-0001-7409-5688"
},
{
"family_name": "van Saders",
"given_name": "Jennifer L.",
"orcid": "0000-0002-4284-8638"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Hey",
"given_name": "Daniel",
"orcid": "0000-0003-3244-5357"
},
{
"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"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"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": "Van Zandt",
"given_name": "Judah",
"orcid": "0000-0002-4290-6826"
},
{
"family_name": "Murphey",
"given_name": "Joseph M. Akana",
"orcid": "0000-0001-8898-8284"
},
{
"family_name": "Rice",
"given_name": "Malena",
"orcid": "0000-0002-7670-670X"
},
{
"family_name": "Blunt",
"given_name": "Sarah",
"orcid": "0000-0002-3199-2888",
"clpid": "Blunt-Sarah"
},
{
"family_name": "Turtelboom",
"given_name": "Emma",
"orcid": "0000-0002-1845-2617"
},
{
"family_name": "Dalba",
"given_name": "Paul A.",
"orcid": "0000-0002-4297-5506"
},
{
"family_name": "Lubin",
"given_name": "Jack",
"orcid": "0000-0001-8342-7736"
},
{
"family_name": "Brinkman",
"given_name": "Casey",
"orcid": "0000-0002-4480-310X"
},
{
"family_name": "Louden",
"given_name": "Emma M.",
"orcid": "0000-0003-3179-5320"
},
{
"family_name": "Page",
"given_name": "Emma",
"orcid": "0000-0002-3221-3874"
},
{
"family_name": "Watkins",
"given_name": "Cristilyn N.",
"orcid": "0000-0001-8621-6731"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Stockdale",
"given_name": "Chris",
"orcid": "0000-0003-2163-1437"
},
{
"family_name": "Tan",
"given_name": "Thiam-Guan",
"orcid": "0000-0001-5603-6895"
},
{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"family_name": "Massey",
"given_name": "Bob",
"orcid": "0000-0001-8879-7138"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Vanderburg",
"given_name": "Andrew",
"orcid": "0000-0001-7246-5438"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Daylan",
"given_name": "Tansu",
"orcid": "0000-0002-6939-9211"
},
{
"family_name": "Falk",
"given_name": "Ben"
},
{
"family_name": "Brodheim",
"given_name": "Max",
"orcid": "0009-0008-9808-0411"
},
{
"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": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893"
},
{
"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": "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": "Christopher L."
},
{
"family_name": "Walawender",
"given_name": "Josh",
"orcid": "0000-0002-6092-8295"
},
{
"family_name": "Yeh",
"given_name": "Sherry",
"orcid": "0000-0002-4037-3114"
}
],
"abstract": "\n
The degree of alignment between a star's spin axis and the orbital plane of its planets (the stellar obliquity) is related to interesting and poorly understood processes that occur during planet formation and evolution. Hot Jupiters orbiting hot stars (\u22736250 K) display a wide range of obliquities, while similar planets orbiting cool stars are preferentially aligned. Tidal dissipation is expected to be more rapid in stars with thick convective envelopes, potentially explaining this trend. Evolved stars provide an opportunity to test the damping hypothesis, particularly stars that were hot on the main sequence and have since cooled and developed deep convective envelopes. We present the first systematic study of the obliquities of hot Jupiters orbiting subgiants that recently developed convective envelopes using Rossiter–McLaughlin observations. Our sample includes two newly discovered systems in the Giants Transiting Giants survey (TOI-6029 b, TOI-4379 b). We find that the orbits of hot Jupiters orbiting subgiants that have cooled below ∼6250 K are aligned or nearly aligned with the spin axis of their host stars, indicating rapid tidal realignment after the emergence of a stellar convective envelope. We place an upper limit for the timescale of realignment for hot Jupiters orbiting subgiants at ∼500 Myr. Comparison with a simplified tidal evolution model shows that obliquity damping needs to be ∼4 orders of magnitude more efficient than orbital period decay to damp the obliquity without destroying the planet, which is consistent with recent predictions for tidal dissipation from inertial waves excited by hot Jupiters on misaligned orbits.
\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
Over the last decade, precise exoplanet transmission spectroscopy has revealed the atmospheres of dozens of exoplanets, driven largely by observatories like the Hubble Space Telescope. One major discovery has been the ubiquity of atmospheric aerosols, often blocking access to exoplanet chemical inventories. Tentative trends have been identified, showing that the clarity of planetary atmospheres may depend on equilibrium temperature. Previous work has often grouped dissimilar planets together in order to increase the statistical power of any trends, but it remains unclear from observed transmission spectra whether these planets exhibit the same atmospheric physics and chemistry. We present a reanalysis of a smaller, more physically similar sample of 15 exo-Neptune transmission spectra across a wide range of temperatures (200–1000 K). Using condensation cloud and hydrocarbon haze models, we find that the exo-Neptune population is best described by low cloud sedimentation efficiency (fsed ∼ 0.1) and high metallicity (100 × solar). There is an intrinsic scatter of ∼0.5 scale height, perhaps evidence of stochasticity in these planets' formation processes. Observers should expect significant attenuation in transmission spectra of Neptune-size exoplanets, up to 6 scale heights for equilibrium temperatures between 500 and 800 K. With JWST's greater wavelength sensitivity, colder (<500 K) planets should be high-priority targets given their clearer atmospheres, and the need to distinguish between the \"super-puffs\" and more typical gas-dominated planets.
\n
Reliable detections of Earth-sized planets in the habitable zone remain elusive in the Kepler sample, even for M dwarfs. The Kepler sample was once thought to contain a considerable number of M-dwarf stars (Teff < 4000 K), which hosted enough Earth-sized ([0.5, 1.5] R⊕) planets to estimate their occurrence rate (η⊕) in the habitable zone. However, updated stellar properties from Gaia have shifted many Kepler stars to earlier spectral type classifications, with most stars (and their planets) now measured to be larger and hotter than previously believed. Today, only one partially reliable Earth-sized candidate remains in the optimistic habitable zone, and zero in the conservative zone. Here we performed a new investigation of Kepler's Earth-sized planets orbiting M-dwarf stars, using occurrence rate models with considerations of updated parameters and candidate reliability. Extrapolating our models to low instellations, we found an occurrence rate of η⊕=8.58_(−8.22)^(+17.94)% for the conservative habitable zone (and 14.22_(−12.71)^(+24.96)% for the optimistic one), consistent with previous works when considering the large uncertainties. Comparing these estimates to those from similarly comprehensive studies of Sun-like stars, we found that the current Kepler sample does not offer evidence to support an increase in η⊕ from FGK to M stars. While the Kepler sample is too sparse to resolve an occurrence trend between early and mid- to late M dwarfs for Earth-sized planets, studies including larger planets and/or data from the K2 and TESS missions are well suited to this task.
",
"doi": "10.3847/1538-3881/ad03ea",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2023-12",
"series_number": "6",
"volume": "166",
"issue": "6",
"pages": "234"
},
{
"id": "authors:6fye5-hdw64",
"collection": "authors",
"collection_id": "6fye5-hdw64",
"cite_using_url": "https://authors.library.caltech.edu/records/6fye5-hdw64",
"type": "article",
"title": "Scaling K2. VII. Evidence For a High Occurrence Rate of Hot Sub-Neptunes at Intermediate Ages",
"author": [
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"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",
"clpid": "Hardegree-Ullman-Kevin-K"
},
{
"family_name": "Fernandes",
"given_name": "Rachel B.",
"orcid": "0000-0002-3853-7327",
"clpid": "Fernandes-Rachel-B"
},
{
"family_name": "Hopkins",
"given_name": "Philip F.",
"orcid": "0000-0003-3729-1684",
"clpid": "Hopkins-P-F"
},
{
"family_name": "Rebull",
"given_name": "Luisa M.",
"orcid": "0000-0001-6381-515X",
"clpid": "Rebull-Luisa-M"
},
{
"family_name": "Boley",
"given_name": "Kiersten M.",
"orcid": "0000-0001-8153-639X",
"clpid": "Boley-Kiersten-M"
},
{
"family_name": "Bergsten",
"given_name": "Galen J.",
"orcid": "0000-0003-4500-8850",
"clpid": "Bergsten-Galen-J"
},
{
"family_name": "Bhure",
"given_name": "Sakhee",
"orcid": "0000-0002-6673-8206",
"clpid": "Bhure-Sakhee"
}
],
"abstract": "The NASA K2 mission obtained high-precision time-series photometry for four young clusters, including the near-twin 600\u2013800 Myr old Praesepe and Hyades clusters. Hot sub-Neptunes are highly prone to mass-loss mechanisms, given their proximity to the host star and the weakly bound gaseous envelopes, and analyzing this population at young ages can provide strong constraints on planetary evolution models. Using our automated transit detection pipeline, we recover 15 planet candidates across the two clusters, including 10 previously confirmed planets. We find a hot sub-Neptune occurrence rate of 79%\u2013107% for GKM stars in the Praesepe cluster. This is 2.5\u20133.5\u03c3 higher than the occurrence rate of 16.54_(\u2212 0.98)^(+1.00) % for the same planets orbiting the \u223c3\u20139 Gyr old GKM field stars observed by K2, even after accounting for the slightly supersolar metallicity ([Fe/H] \u223c 0.2 dex) of the Praesepe cluster. We examine the effect of adding \u223c100 targets from the Hyades cluster and extending the planet parameter space under examination, and we find similarly high occurrence rates in both cases. The high occurrence rate of young, hot sub-Neptunes could indicate either that these planets are undergoing atmospheric evolution as they age, or that planetary systems that formed when the Galaxy was much younger are substantially different than from today. Under the assumption of the atmospheric mass-loss scenario, a significantly higher occurrence rate of these planets at the intermediate ages of Praesepe and Hyades appears more consistent with the core-powered mass-loss scenario for the origin of the planet radius valley, compared to the photoevaporation scenario.
",
"doi": "10.3847/1538-3881/acf9f9",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "The Astronomical Journal",
"publication_date": "2023-12",
"series_number": "6",
"volume": "166",
"issue": "6",
"pages": "248"
},
{
"id": "authors:kvy62-v9a45",
"collection": "authors",
"collection_id": "kvy62-v9a45",
"cite_using_url": "https://authors.library.caltech.edu/records/kvy62-v9a45",
"type": "article",
"title": "Water Absorption in the Transmission Spectrum of the Water World Candidate GJ 9827 d",
"author": [
{
"family_name": "Roy",
"given_name": "Pierre-Alexis",
"orcid": "0000-0001-6809-3520"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498"
},
{
"family_name": "Piaulet",
"given_name": "Caroline",
"orcid": "0000-0002-2875-917X"
},
{
"family_name": "Gully-Santiago",
"given_name": "Michael A.",
"orcid": "0000-0002-4020-3457"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M."
},
{
"family_name": "Morley",
"given_name": "Caroline V.",
"orcid": "0000-0002-4404-0456"
},
{
"family_name": "Kreidberg",
"given_name": "Laura",
"orcid": "0000-0003-0514-1147"
},
{
"family_name": "Mikal-Evans",
"given_name": "Thomas",
"orcid": "0000-0001-5442-1300"
},
{
"family_name": "Brande",
"given_name": "Jonathan",
"orcid": "0000-0002-2072-6541"
},
{
"family_name": "Delisle",
"given_name": "Simon",
"orcid": "0000-0002-4771-0312"
},
{
"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"
},
{
"family_name": "Barman",
"given_name": "Travis",
"orcid": "0000-0002-7129-3002"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Fortney",
"given_name": "Jonathan J.",
"orcid": "0000-0002-9843-4354"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Kosiarek",
"given_name": "Molly R.",
"orcid": "0000-0002-6115-4359"
},
{
"family_name": "Lothringer",
"given_name": "Joshua D.",
"orcid": "0000-0003-3667-8633"
}
],
"abstract": "\n
Recent work on the characterization of small exoplanets has allowed us to accumulate growing evidence that sub-Neptunes with radii greater than ∼2.5 R⊕ often host H2/He-dominated atmospheres both from measurements of their low bulk densities and from direct detections of their low mean molecular mass atmospheres. However, the smaller sub-Neptunes in the 1.5–2.2 R⊕ size regime are much less understood and often have bulk densities that can be explained either by the H2/He-rich scenario or by a volatile-dominated composition known as the \"water world\" scenario. Here we report the detection of water vapor in the transmission spectrum of the 1.96 ± 0.08 R⊕ sub-Neptune GJ 9827 d obtained with the Hubble Space Telescope (HST). We observe 11 HST Wide Field Camera 3 transits of GJ 9827 d and find an absorption feature at 1.4 μm in its transit spectrum, which is best explained (at 3.39σ) by the presence of water in GJ 9827 d's atmosphere. We further show that this feature cannot be caused by unocculted starspots during the transits by combining an analysis of the K2 photometry and transit light source effect retrievals. We reveal that the water absorption feature can be similarly well explained by a small amount of water vapor in a cloudy H2/He atmosphere or a water vapor envelope on GJ 9827 d. Given that recent studies have inferred an important mass-loss rate (>0.5 M⊕ Gyr−1) for GJ 9827 d, making it unlikely to retain a H-dominated envelope, our findings highlight GJ 9827 d as a promising water world candidate that could host a volatile-dominated atmosphere. This water detection also makes GJ 9827 d the smallest exoplanet with an atmospheric molecular detection to date.
\n
We have identified 2XMM J125556.57+565846.4, at a distance of 600 pc, as a binary system consisting of a normal star and a probable dormant neutron star. Optical spectra exhibit a slightly evolved F-type single star, displaying periodic Doppler shifts with a 2.76-d Keplerian circular orbit, with no indication of light from a secondary component. Optical and UV photometry reveal ellipsoidal modulation with half the orbital period, due to the tidal deformation of the F-star. The mass of the unseen companion is constrained to the range of 1.1–2.1M\u2299 at 3σ confidence, with the median of the mass distribution at 1.4M\u2299\u2060, the typical mass of known neutron stars. A main-sequence star cannot masquerade as the dark companion. The distribution of possible companion masses still allows for the possibility of a very massive white dwarf. The companion itself could also be a close pair consisting of a white dwarf and an M star, or two white dwarfs, although the binary evolution that would lead to such a close triple system is unlikely. Similar ambiguities regarding the certain identification of a dormant neutron star are bound to affect most future discoveries of this type of non-interacting system. If the system indeed contains a dormant neutron star, it will become, in the future, a bright X-ray source and afterwards might even host a millisecond pulsar.
",
"doi": "10.1093/mnras/stac2853",
"issn": "0035-8711",
"publisher": "Royal Astronomical Society",
"publication": "Monthly Notices of the Royal Astronomical Society",
"publication_date": "2022-12",
"series_number": "3",
"volume": "517",
"issue": "3",
"pages": "4005-4021"
},
{
"id": "authors:tf2bb-v7z75",
"collection": "authors",
"collection_id": "tf2bb-v7z75",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20221031-575177800.20",
"type": "article",
"title": "A Mirage or an Oasis? Water Vapor in the Atmosphere of the Warm Neptune TOI-674 b",
"author": [
{
"family_name": "Brande",
"given_name": "Jonathan",
"orcid": "0000-0002-2072-6541",
"clpid": "Brande-Jonathan"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Kreidberg",
"given_name": "Laura",
"orcid": "0000-0003-0514-1147",
"clpid": "Kreidberg-Laura"
},
{
"family_name": "Oklop\u010di\u0107",
"given_name": "Antonija",
"orcid": "0000-0002-9584-6476",
"clpid": "Oklop\u010di\u0107-Antonija"
},
{
"family_name": "Polanski",
"given_name": "Alex S.",
"orcid": "0000-0001-7047-8681",
"clpid": "Polanski-Alex-S"
},
{
"family_name": "Barman",
"given_name": "Travis",
"orcid": "0000-0002-7129-3002",
"clpid": "Barman-Travis-S"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498",
"clpid": "Benneke-Bj\u00f6rn"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X",
"clpid": "Dragomir-Diana"
},
{
"family_name": "Foreman-Mackey",
"given_name": "Daniel",
"orcid": "0000-0002-9328-5652",
"clpid": "Foreman-Mackey-Daniel"
},
{
"family_name": "Fortney",
"given_name": "Jonathan J.",
"orcid": "0000-0002-9843-4354",
"clpid": "Fortney-Jonathan-J"
},
{
"family_name": "Greene",
"given_name": "Thomas P.",
"orcid": "0000-0002-8963-8056",
"clpid": "Greene-Thomas-P"
},
{
"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": "Lothringer",
"given_name": "Joshua D.",
"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": "Morley",
"given_name": "Caroline V.",
"orcid": "0000-0002-4404-0456",
"clpid": "Morley-Caroline-V"
}
],
"abstract": "We report observations of the recently discovered warm Neptune TOI-674 b (5.25 R_\u2295, 23.6 M_\u2295) with the Hubble Space Telescope's Wide Field Camera 3 instrument. TOI-674 b is in the Neptune desert, an observed paucity of Neptune-size exoplanets at short orbital periods. Planets in the desert are thought to have complex evolutionary histories due to photoevaporative mass loss or orbital migration, making identifying the constituents of their atmospheres critical to understanding their origins. We obtained near-infrared transmission spectroscopy of the planet's atmosphere with the G141 grism. After extracting, detrending, and fitting the spectral light curves to measure the planet's transmission spectrum, we used the petitRADTRANS atmospheric spectral synthesis code to perform retrievals on the planet's atmosphere to identify which absorbers are present. These results show moderate evidence for increased absorption at 1.4 \u03bcm due to water vapor at 2.9\u03c3 (Bayes factor = 15.8), as well as weak evidence for the presence of clouds at 2.2\u03c3 (Bayes factor = 4.0). TOI-674 b is a strong candidate for further study to refine the water abundance, which is poorly constrained by our data. We also incorporated new TESS short-cadence optical photometry, as well as Spitzer/IRAC data, and refit the transit parameters for the planet. We find the planet to have the following transit parameters: R\u209a/R_* = 0.1135 \u00b1 0.0006, T\u2080 = 2458544.523792 \u00b1 0.000452 BJD, and P = 1.977198 \u00b1 0.00007 day. These measurements refine the planet radius estimate and improve the orbital ephemerides for future transit spectroscopy observations of this highly intriguing warm Neptune.",
"doi": "10.3847/1538-3881/ac8b7e",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-11",
"series_number": "5",
"volume": "164",
"issue": "5",
"pages": "Art. No. 197"
},
{
"id": "authors:44c9g-j8a95",
"collection": "authors",
"collection_id": "44c9g-j8a95",
"cite_using_url": "https://authors.library.caltech.edu/records/44c9g-j8a95",
"type": "article",
"title": "TOI-2196 b: Rare planet in the hot Neptune desert transiting a G-type star",
"author": [
{
"family_name": "Persson",
"given_name": "Carina M.",
"orcid": "0000-0003-1257-5146"
},
{
"family_name": "Georgieva",
"given_name": "Iskra Y.",
"orcid": "0000-0002-5056-1899"
},
{
"family_name": "Gandolfi",
"given_name": "Davide",
"orcid": "0000-0001-8627-9628"
},
{
"family_name": "Acuna",
"given_name": "Lorena",
"orcid": "0000-0002-9147-7925"
},
{
"family_name": "Aguichine",
"given_name": "Artem"
},
{
"family_name": "Muresan",
"given_name": "Alexandra",
"orcid": "0000-0002-3439-4330"
},
{
"family_name": "Guenther",
"given_name": "Eike"
},
{
"family_name": "Livingston",
"given_name": "John",
"orcid": "0000-0002-4881-3620"
},
{
"family_name": "Collins",
"given_name": "Karen A."
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"family_name": "Fridlund",
"given_name": "Malcolm",
"orcid": "0000-0002-0855-8426"
},
{
"family_name": "Goffo",
"given_name": "Elisa",
"orcid": "0000-0001-9670-961X"
},
{
"family_name": "Jenkins",
"given_name": "James S.",
"orcid": "0000-0003-2733-8725"
},
{
"family_name": "Kab\u00e1th",
"given_name": "Petr",
"orcid": "0000-0002-1623-5352"
},
{
"family_name": "Korth",
"given_name": "Judith"
},
{
"family_name": "Levine",
"given_name": "Alan M.",
"orcid": "0000-0001-8172-0453"
},
{
"family_name": "Serrano",
"given_name": "Luisa M."
},
{
"family_name": "Vines",
"given_name": "Jos\u00e9",
"orcid": "0000-0002-1896-2377"
},
{
"family_name": "Barragan",
"given_name": "Oscar",
"orcid": "0000-0003-0563-0493"
},
{
"family_name": "Carleo",
"given_name": "Ilaria",
"orcid": "0000-0002-0810-3747"
},
{
"family_name": "Colon",
"given_name": "Knicole D."
},
{
"family_name": "Cochran",
"given_name": "William D."
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Deeg",
"given_name": "Hans J.",
"orcid": "0000-0003-0047-4241"
},
{
"family_name": "Deleuil",
"given_name": "Magali"
},
{
"family_name": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Esposito",
"given_name": "Massimiliamo"
},
{
"family_name": "Gan",
"given_name": "Tianjun",
"orcid": "0000-0002-4503-9705"
},
{
"family_name": "Grziwa",
"given_name": "Sascha",
"orcid": "0000-0003-3370-4058"
},
{
"family_name": "Hatzes",
"given_name": "Artie P."
},
{
"family_name": "Hesse",
"given_name": "Katharine",
"orcid": "0000-0002-2135-9018"
},
{
"family_name": "Horne",
"given_name": "Keith"
},
{
"family_name": "Jenkins",
"given_name": "Jon M."
},
{
"family_name": "Kielkopf",
"given_name": "John F."
},
{
"family_name": "Klagyivik",
"given_name": "P."
},
{
"family_name": "Lam",
"given_name": "Kristine W. F."
},
{
"family_name": "Latham",
"given_name": "David W."
},
{
"family_name": "Luque",
"given_name": "Rafa"
},
{
"family_name": "Orell-Miquel",
"given_name": "Jaume",
"orcid": "0000-0003-2066-8959"
},
{
"family_name": "Mortier",
"given_name": "Annelies",
"orcid": "0000-0001-7254-4363"
},
{
"family_name": "Mousis",
"given_name": "Olivier",
"orcid": "0000-0001-5323-6453"
},
{
"family_name": "Narita",
"given_name": "Noria"
},
{
"family_name": "Osborne",
"given_name": "Hannah L. M.",
"orcid": "0000-0002-4143-4767"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Papini",
"given_name": "Riccardo",
"orcid": "0009-0006-9361-9153"
},
{
"family_name": "Ricker",
"given_name": "George R.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Schmerling",
"given_name": "Hendrik"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Van Eylen",
"given_name": "Vincent",
"orcid": "0000-0001-5542-8870"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Wang",
"given_name": "Gavin",
"orcid": "0000-0003-3092-4418"
},
{
"family_name": "Winn",
"given_name": "Joshua N."
},
{
"family_name": "Wohler",
"given_name": "Bill"
},
{
"family_name": "Zambelli",
"given_name": "Roberto"
},
{
"family_name": "Ziegler",
"given_name": "Carl"
}
],
"abstract": "The hot Neptune desert is a region hosting a small number of short-period Neptunes in the radius-instellation diagram. Highly irradiated planets are usually either small (R \u2272 2 R⊕) and rocky or they are gas giants with radii of \u22731 RJ. Here, we report on the intermediate-sized planet TOI-2196 b (TIC 372172128.01) on a 1.2 day orbit around a G-type star (V = 12.0, [Fe/H] = 0.14 dex) discovered by the Transiting Exoplanet Survey Satellite in sector 27. We collected 41 radial velocity measurements with the HARPS spectrograph to confirm the planetary nature of the transit signal and to determine the mass. The radius of TOI-2196 b is 3.51 ± 0.15 R⊕, which, combined with the mass of 26.0 ± 1.3 M⊕, results in a bulk density of 3.31−0.43+0.51 g cm−3. Hence, the radius implies that this planet is a sub-Neptune, although the density is twice than that of Neptune. A significant trend in the HARPS radial velocity measurements points to the presence of a distant companion with a lower limit on the period and mass of 220 days and 0.65 MJ, respectively, assuming zero eccentricity. The short period of planet b implies a high equilibrium temperature of 1860 ± 20 K, for zero albedo and isotropic emission. This places the planet in the hot Neptune desert, joining a group of very few planets in this parameter space discovered in recent years. These planets suggest that the hot Neptune desert may be divided in two parts for planets with equilibrium temperatures of \u22731800 K: a hot sub-Neptune desert devoid of planets with radii of ≈ 1.8−3 R⊕ and a sub-Jovian desert for radii of ≈5−12 R⊕. More planets in this parameter space are needed to further investigate this finding. Planetary interior structure models of TOI-2196 b are consistent with a H/He atmosphere mass fraction between 0.4% and 3%, with a mean value of 0.7% on top of a rocky interior. We estimated the amount of mass this planet might have lost at a young age and we find that while the mass loss could have been significant, the planet had not changed in terms of character: it was born as a small volatile-rich planet and it remains one at present.
",
"doi": "10.1051/0004-6361/202244118",
"issn": "0004-6361",
"publisher": "EDP Sciences",
"publication": "Astronomy and Astrophysics",
"publication_date": "2022-10",
"volume": "666",
"pages": "A184"
},
{
"id": "authors:yv3b4-nr214",
"collection": "authors",
"collection_id": "yv3b4-nr214",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220815-504703000",
"type": "article",
"title": "Three new brown dwarfs and a massive hot Jupiter revealed by TESS around early-type stars",
"author": [
{
"family_name": "Psaridi",
"given_name": "Angelica",
"orcid": "0000-0002-4797-2419",
"clpid": "Psaridi-Angelica"
},
{
"family_name": "Bouchy",
"given_name": "Fran\u00e7ois",
"orcid": "0000-0002-7613-393X"
},
{
"family_name": "Lendl",
"given_name": "Monika",
"orcid": "0000-0001-9699-1459"
},
{
"family_name": "Grieves",
"given_name": "Nolan",
"orcid": "0000-0001-8105-0373"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Carmichael",
"given_name": "Theron W.",
"orcid": "0000-0001-6416-1274"
},
{
"family_name": "Gill",
"given_name": "Samuel",
"orcid": "0000-0002-4259-0155"
},
{
"family_name": "Pe\u00f1a Rojas",
"given_name": "Pablo A.",
"orcid": "0000-0002-8770-4398"
},
{
"family_name": "Gan",
"given_name": "Tianjun",
"orcid": "0000-0002-4503-9705"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Brahm",
"given_name": "Rafael",
"orcid": "0000-0002-9158-7315"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Galland",
"given_name": "Franck"
},
{
"family_name": "Hooton",
"given_name": "Matthew J.",
"orcid": "0000-0003-0030-332X"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Jenkins",
"given_name": "James S.",
"orcid": "0000-0003-2733-8725"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "Rodriguez",
"given_name": "Joseph E.",
"orcid": "0000-0001-8812-0565"
},
{
"family_name": "Ting",
"given_name": "Eric B.",
"orcid": "0000-0002-8219-9505"
},
{
"family_name": "Udry",
"given_name": "St\u00e9phane",
"orcid": "0000-0001-7576-6236"
},
{
"family_name": "Ulmer-Moll",
"given_name": "Sol\u00e8ne"
},
{
"family_name": "Wittenmyer",
"given_name": "Robert A.",
"orcid": "0000-0001-9957-9304"
},
{
"family_name": "Zhang",
"given_name": "Yanzhe"
},
{
"family_name": "Zhou",
"given_name": "George",
"orcid": "0000-0002-4891-3517"
},
{
"family_name": "Addison",
"given_name": "Brett",
"orcid": "0000-0003-3216-0626"
},
{
"family_name": "Cointepas",
"given_name": "Marion"
},
{
"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": "Deline",
"given_name": "Adrien"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Evans",
"given_name": "Phil",
"orcid": "0000-0002-5674-2404"
},
{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
},
{
"family_name": "Heitzmann",
"given_name": "Alexis",
"orcid": "0000-0002-8091-7526"
},
{
"family_name": "Mireles",
"given_name": "Ismael",
"orcid": "0000-0002-4510-2268"
},
{
"family_name": "Mounzer",
"given_name": "Dany"
},
{
"family_name": "Otegi",
"given_name": "Jon"
},
{
"family_name": "Radford",
"given_name": "Don J.",
"orcid": "0000-0002-3940-2360"
},
{
"family_name": "Rudat",
"given_name": "Alexander"
},
{
"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": "Srdoc",
"given_name": "Gregor"
},
{
"family_name": "Stockdale",
"given_name": "Chris",
"orcid": "0000-0003-2163-1437"
},
{
"family_name": "Suarez",
"given_name": "Olga",
"orcid": "0000-0002-3503-3617"
},
{
"family_name": "Wright",
"given_name": "Duncan J.",
"orcid": "0000-0001-7294-5386"
},
{
"family_name": "Zhao",
"given_name": "Yinan"
}
],
"abstract": "Context. The detection and characterization of exoplanets and brown dwarfs around massive AF-type stars is essential to investigate and constrain the impact of stellar mass on planet properties. However, such targets are still poorly explored in radial velocity (RV) surveys because they only feature a small number of stellar lines and those are usually broadened and blended by stellar rotation as well as stellar jitter. As a result, the available information about the formation and evolution of planets and brown dwarfs around hot stars is limited. \n\nAims. We aim to increase the sample and precisely measure the masses and eccentricities of giant planets and brown dwarfs transiting early-type stars detected by the Transiting Exoplanet Survey Satellite (TESS). \n\nMethods. We followed bright (V < 12 mag) stars with T_(eff) > 6200 K that host giant companions (R > 7 R_\u2295) using ground-based photometric observations as well as high precision radial velocity measurements from the CORALIE, CHIRON, TRES, FEROS, and MINERVA-Australis spectrographs.\nResults. In the context of the search for exoplanets and brown dwarfs around early-type stars, we present the discovery of three brown dwarf companions, TOI-629b, TOI-1982b, and TOI-2543b, and one massive planet, TOI-1107b. From the joint analysis of TESS and ground-based photometry in combination with high precision radial velocity measurements, we find the brown dwarfs have masses between 66 and 68 M_(Jup), periods between 7.54 and 17.17 days, and radii between 0.95 and 1.11 R_(Jup). The hot Jupiter TOI-1107b has an orbital period of 4.08 days, a radius of 1.30 R_(Jup), and a mass of 3.35 M_(Jup). As a by-product of this program, we identified four low-mass eclipsing components (TOI-288b, TOI-446b, TOI-478b, and TOI-764b). \n\nConclusions. Both TOI-1107b and TOI-1982b present an anomalously inflated radius with respect to the age of these systems. TOI-629 is among the hottest stars with a known transiting brown dwarf. TOI-629b and TOI-1982b are among the most eccentric brown dwarfs. The massive planet and the three brown dwarfs add to the growing population of well-characterized giant planets and brown dwarfs transiting AF-type stars and they reduce the apparent paucity.",
"doi": "10.1051/0004-6361/202243454",
"issn": "0004-6361",
"publisher": "EDP Sciences",
"publication": "Astronomy and Astrophysics",
"publication_date": "2022-08",
"volume": "664",
"pages": "Art. No. A94"
},
{
"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: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:z6jxq-s9127",
"collection": "authors",
"collection_id": "z6jxq-s9127",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220412-268547300",
"type": "article",
"title": "An Updated Ephemeris for K2-138 d",
"author": [
{
"family_name": "Boyle",
"given_name": "Andrew",
"orcid": "0000-0001-6037-2971",
"clpid": "Boyle-Andrew"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Vissapragada",
"given_name": "Shreyas",
"orcid": "0000-0003-2527-1475",
"clpid": "Vissapragada-Shreyas"
},
{
"family_name": "Hardegree-Ullman",
"given_name": "Kevin K.",
"orcid": "0000-0003-3702-0382",
"clpid": "Hardegree-Ullman-Kevin-K"
}
],
"abstract": "K2-138 d (EPIC 245950175 d) is one of five planets in a chain of 3:2 mean motion resonances discovered by Christiansen et al. in K2 Campaign 12. An additional planet, confirmed with the Spitzer Space Telescope by Hardegree-Ullman et al., is not in the resonant chain. The near first-order resonances, coupled with the planets being locked in a set of three-body Laplace resonances, make this system a unique target to study for transit timing variations (TTVs). As the predicted transit timing amplitude (\u223c7 minutes) was below the typical transit timing uncertainty (\u223c10 minutes) of the K2 data, Christiansen et al. were unable to detect TTVs for K2-138 d in the K2 time series. Here, we describe new observations that allow us to refine the ephemeris for K2-138 d and perform a brief search for TTVs. Our efforts result in a refined orbital period that is 19 times more precise than previously available measurements, but our data are insufficient to confirm a TTV signal for K2-138 d.",
"doi": "10.3847/2515-5172/ac64fe",
"issn": "2515-5172",
"publisher": "American Astronomical Society",
"publication": "Research Notes of the AAS",
"publication_date": "2022-04",
"series_number": "4",
"volume": "6",
"issue": "4",
"pages": "Art. No. 71"
},
{
"id": "authors:psdxh-zzf92",
"collection": "authors",
"collection_id": "psdxh-zzf92",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211130-215717981",
"type": "article",
"title": "TOI-530b: A giant planet transiting an M dwarf detected by TESS",
"author": [
{
"family_name": "Gan",
"given_name": "Tianjun",
"orcid": "0000-0002-4503-9705",
"clpid": "Gan-Tianjun"
},
{
"family_name": "Lin",
"given_name": "Zitao"
},
{
"family_name": "Wang",
"given_name": "Sharon Xuesong",
"orcid": "0000-0002-6937-9034"
},
{
"family_name": "Mao",
"given_name": "Shude",
"orcid": "0000-0001-8317-2788"
},
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{
"family_name": "Fan",
"given_name": "Jiahao"
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{
"family_name": "Bedell",
"given_name": "Megan",
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{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
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{
"family_name": "Giacalone",
"given_name": "Steven",
"orcid": "0000-0002-8965-3969"
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{
"family_name": "Fukui",
"given_name": "Akihiko",
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"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
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"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
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{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
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{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
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{
"family_name": "Shporer",
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{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
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{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233"
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{
"family_name": "Elliott",
"given_name": "Ashley"
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{
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"given_name": "Emma",
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{
"family_name": "Evans",
"given_name": "Phil",
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{
"family_name": "Gnilka",
"given_name": "Crystal L.",
"orcid": "0000-0003-2519-6161"
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{
"family_name": "Gonzales",
"given_name": "Erica J.",
"orcid": "0000-0002-9329-2190"
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{
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"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
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{
"family_name": "Isogai",
"given_name": "Keisuke",
"orcid": "0000-0002-6480-3799"
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{
"family_name": "Kawauchi",
"given_name": "Kiyoe",
"orcid": "0000-0003-1205-5108"
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{
"family_name": "Kurita",
"given_name": "Seiya"
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{
"family_name": "Liu",
"given_name": "Beibei"
},
{
"family_name": "Livingston",
"given_name": "John H.",
"orcid": "0000-0002-4881-3620"
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{
"family_name": "Matson",
"given_name": "Rachel A.",
"orcid": "0000-0001-7233-7508"
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{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
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{
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"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
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"given_name": "Hannu",
"orcid": "0000-0001-5519-1391"
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{
"family_name": "Rackham",
"given_name": "Benjamin V.",
"orcid": "0000-0002-3627-1676"
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{
"family_name": "Rodriguez",
"given_name": "David R.",
"orcid": "0000-0003-1286-5231"
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{
"family_name": "Rose",
"given_name": "Mark",
"orcid": "0000-0003-4724-745X"
},
{
"family_name": "Rudat",
"given_name": "Alexander"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
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{
"family_name": "Scott",
"given_name": "Nicholas J.",
"orcid": "0000-0003-1038-9702"
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{
"family_name": "Vezie",
"given_name": "Michael",
"orcid": "0000-0002-7930-1775"
},
{
"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"
},
{
"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"
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{
"family_name": "Jenkins",
"given_name": "Jon M.",
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],
"abstract": "We report the discovery of TOI-530b, a transiting Saturn-like planet around an M0.5V dwarf, delivered by the Transiting Exoplanet Survey Satellite (TESS). The host star is located at a distance of 147.7 \u00b1 0.6 pc with a radius of R* = 0.54 \u00b1 0.03\u2009R_\u2299 and a mass of M* = 0.53 \u00b1 0.02\u2009M_\u2299. We verify the planetary nature of the transit signals by combining ground-based multiwavelength photometry, high-resolution spectroscopy from SPIRou as well as high-angular-resolution imaging. With V = 15.4 mag, TOI-530b is orbiting one of the faintest stars accessible by ground-based spectroscopy. Our model reveals that TOI-530b has a radius of 0.83 \u00b1 0.05\u2009R_J and a mass of 0.37 \u00b1 0.08\u2009M_J on a 6.39-d orbit. TOI-530b is the sixth transiting giant planet hosted by an M-type star, which is predicted to be infrequent according to core accretion theory, making it a valuable object to further study the formation and migration history of similar planets. Furthermore, we identify a potential dearth of hot massive giant planets around M-dwarfs with separation distance smaller than 0.1\u2009au and planet-to-star mass ratio between 2 \u00d7 10\u207b\u00b3 and 10\u207b\u00b2. We also find a possible correlation between hot giant planet formation and the metallicity of its parent M-dwarf. We discuss the potential formation channel of such systems.",
"doi": "10.1093/mnras/stab3708",
"issn": "0035-8711",
"publisher": "Royal Astronomical Society",
"publication": "Monthly Notices of the Royal Astronomical Society",
"publication_date": "2022-03",
"series_number": "1",
"volume": "511",
"issue": "1",
"pages": "83-99"
},
{
"id": "authors:0z078-qwy46",
"collection": "authors",
"collection_id": "0z078-qwy46",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220203-316547000",
"type": "article",
"title": "Validation of 13 Hot and Potentially Terrestrial TESS Planets",
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{
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{
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{
"family_name": "Yahalomi",
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{
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"given_name": "Jennifer G.",
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"given_name": "John H.",
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{
"family_name": "Safonov",
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{
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{
"family_name": "Matson",
"given_name": "Rachel A.",
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{
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{
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{
"family_name": "Petigura",
"given_name": "Erik A.",
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{
"family_name": "Polanski",
"given_name": "Alex S.",
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{
"family_name": "Pozuelos",
"given_name": "Francisco J.",
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{
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{
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"given_name": "Peter P.",
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{
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{
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"given_name": "Mark E.",
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{
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"given_name": "Arjun B.",
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"given_name": "Joshua E.",
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{
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"given_name": "Richard P.",
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"given_name": "Ivan A.",
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{
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"given_name": "Thiam-Guan",
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"orcid": "0000-0002-5286-0251"
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{
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"given_name": "Ren\u00e9",
"orcid": "0000-0003-1001-0707"
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{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
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{
"family_name": "Vermilion",
"given_name": "David",
"orcid": "0000-0002-4501-564X"
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{
"family_name": "Waite",
"given_name": "Ian A.",
"orcid": "0000-0002-3249-3538"
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{
"family_name": "Walter",
"given_name": "Bradley"
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{
"family_name": "Wang",
"given_name": "Gavin",
"orcid": "0000-0003-3092-4418"
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{
"family_name": "Ziegler",
"given_name": "Carl",
"orcid": "0000-0002-0619-7639"
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{
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],
"abstract": "The James Webb Space Telescope will be able to probe the atmospheres and surface properties of hot, terrestrial planets via emission spectroscopy. We identify 18 potentially terrestrial planet candidates detected by the Transiting Exoplanet Survey Satellite (TESS) that would make ideal targets for these observations. These planet candidates cover a broad range of planet radii (R_p \u223c 0.6\u20132.0 R_\u2295) and orbit stars of various magnitudes (K_s = 5.78\u201310.78, V = 8.4\u201315.69) and effective temperatures (T_(eff) \u223c 3000\u20136000 K). We use ground-based observations collected through the TESS Follow-up Observing Program (TFOP) and two vetting tools\u2014DAVE and TRICERATOPS\u2014to assess the reliabilities of these candidates as planets. We validate 13 planets: TOI-206 b, TOI-500 b, TOI-544 b, TOI-833 b, TOI-1075 b, TOI-1411 b, TOI-1442 b, TOI-1693 b, TOI-1860 b, TOI-2260 b, TOI-2411 b, TOI-2427 b, and TOI-2445 b. Seven of these planets (TOI-206 b, TOI-500 b, TOI-1075 b, TOI-1442 b, TOI-2260 b, TOI-2411 b, and TOI-2445 b) are ultra-short-period planets. TOI-1860 is the youngest (133 \u00b1 26 Myr) solar twin with a known planet to date. TOI-2260 is a young (321 \u00b1 96 Myr) G dwarf that is among the most metal-rich ([Fe/H] = 0.22 \u00b1 0.06 dex) stars to host an ultra-short-period planet. With an estimated equilibrium temperature of \u223c2600 K, TOI-2260 b is also the fourth hottest known planet with R_p < 2 R_\u2295.",
"doi": "10.3847/1538-3881/ac4334",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2022-02",
"series_number": "2",
"volume": "163",
"issue": "2",
"pages": "Art. No. 99"
},
{
"id": "authors:2njtp-v5n10",
"collection": "authors",
"collection_id": "2njtp-v5n10",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20220131-740965700",
"type": "article",
"title": "TOI-2257 b: A highly eccentric long-period sub-Neptune transiting a nearby M dwarf",
"author": [
{
"family_name": "Schanche",
"given_name": "N.",
"orcid": "0000-0002-9526-3780",
"clpid": "Schanche-Nicole"
},
{
"family_name": "Pozuelos",
"given_name": "F. J.",
"orcid": "0000-0003-1572-7707"
},
{
"family_name": "G\u00fcnther",
"given_name": "M. N.",
"orcid": "0000-0002-3164-9086"
},
{
"family_name": "Wells",
"given_name": "R. D.",
"orcid": "0000-0002-7240-8473"
},
{
"family_name": "Burgasser",
"given_name": "A. J.",
"orcid": "0000-0002-6523-9536"
},
{
"family_name": "Chinchilla",
"given_name": "P."
},
{
"family_name": "Delrez",
"given_name": "L.",
"orcid": "0000-0001-6108-4808"
},
{
"family_name": "Ducrot",
"given_name": "E.",
"orcid": "0000-0002-7008-6888"
},
{
"family_name": "Garcia",
"given_name": "L. J."
},
{
"family_name": "G\u00f3mez Maqueo Chew",
"given_name": "Y."
},
{
"family_name": "Jofr\u00e9",
"given_name": "E."
},
{
"family_name": "Rackham",
"given_name": "B. V."
},
{
"family_name": "Sebastian",
"given_name": "D."
},
{
"family_name": "Stassun",
"given_name": "K. G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Stern",
"given_name": "D.",
"orcid": "0000-0003-2686-9241",
"clpid": "Stern-Daniel"
},
{
"family_name": "Timmermans",
"given_name": "M."
},
{
"family_name": "Barkaoui",
"given_name": "K.",
"orcid": "0000-0003-1464-9276"
},
{
"family_name": "Belinski",
"given_name": "A."
},
{
"family_name": "Benkhaldoun",
"given_name": "Z.",
"orcid": "0000-0001-6285-9847"
},
{
"family_name": "Benz",
"given_name": "W."
},
{
"family_name": "Bieryla",
"given_name": "A.",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Bouchy",
"given_name": "F.",
"orcid": "0000-0002-7613-393X"
},
{
"family_name": "Burdanov",
"given_name": "A."
},
{
"family_name": "Charbonneau",
"given_name": "D.",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Christiansen",
"given_name": "J. L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Collins",
"given_name": "K. A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Demory",
"given_name": "B.-O.",
"orcid": "0000-0002-9355-5165"
},
{
"family_name": "D\u00e9vora-Pajares",
"given_name": "M."
},
{
"family_name": "de Wit",
"given_name": "J.",
"orcid": "0000-0003-2415-2191"
},
{
"family_name": "Dragomir",
"given_name": "D.",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Dransfield",
"given_name": "G."
},
{
"family_name": "Furlan",
"given_name": "E.",
"orcid": "0000-0001-9800-6248",
"clpid": "Furlan-Elise"
},
{
"family_name": "Ghachoui",
"given_name": "M."
},
{
"family_name": "Gillon",
"given_name": "M.",
"orcid": "0000-0003-1462-7739"
},
{
"family_name": "Gnilka",
"given_name": "C.",
"orcid": "0000-0003-2519-6161"
},
{
"family_name": "G\u00f3mez-Mu\u00f1oz",
"given_name": "M. A."
},
{
"family_name": "Guerrero",
"given_name": "N."
},
{
"family_name": "Harris",
"given_name": "M."
},
{
"family_name": "Heng",
"given_name": "K."
},
{
"family_name": "Henze",
"given_name": "C. E."
},
{
"family_name": "Hesse",
"given_name": "K."
},
{
"family_name": "Howell",
"given_name": "S. B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Jehin",
"given_name": "E.",
"orcid": "0000-0001-8923-488X"
},
{
"family_name": "Jenkins",
"given_name": "J."
},
{
"family_name": "Jensen",
"given_name": "E. L. N.",
"orcid": "0000-0002-4625-7333"
},
{
"family_name": "Kunimoto",
"given_name": "M."
},
{
"family_name": "Latham",
"given_name": "D. W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Lester",
"given_name": "K."
},
{
"family_name": "McLeod",
"given_name": "K. K."
},
{
"family_name": "Mireles",
"given_name": "I."
},
{
"family_name": "Murray",
"given_name": "C. A."
},
{
"family_name": "Niraula",
"given_name": "P."
},
{
"family_name": "Pedersen",
"given_name": "P. P."
},
{
"family_name": "Queloz",
"given_name": "D.",
"orcid": "0000-0002-3012-0316"
},
{
"family_name": "Quintana",
"given_name": "E. V."
},
{
"family_name": "Ricker",
"given_name": "G.",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Rudat",
"given_name": "A."
},
{
"family_name": "Sabin",
"given_name": "L."
},
{
"family_name": "Safonov",
"given_name": "B."
},
{
"family_name": "Schroffenegger",
"given_name": "U."
},
{
"family_name": "Scott",
"given_name": "N."
},
{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Strakhov",
"given_name": "I."
},
{
"family_name": "Triaud",
"given_name": "A. H. M. J.",
"orcid": "0000-0002-5510-8751"
},
{
"family_name": "Vanderspek",
"given_name": "R.",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Vezie",
"given_name": "M."
},
{
"family_name": "Winn",
"given_name": "J.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "Context. Thanks to the relative ease of finding and characterizing small planets around M-dwarf stars, these objects have become cornerstones in the field of exoplanet studies. The current paucity of planets in long-period orbits around M dwarfs makes such objects particularly compelling as they provide clues about the formation and evolution of these systems. \n\nAims. In this study we present the discovery of TOI-2257 b (TIC 198485881), a long-period (35 d) sub-Neptune orbiting an M3 star at 57.8 pc. Its transit depth is about 0.4%, large enough to be detected with medium-size, ground-based telescopes. The long transit duration suggests the planet is in a highly eccentric orbit (e ~ 0.5), which would make it the most eccentric planet known to be transiting an M-dwarf star. \n\nMethods. We combined TESS and ground-based data obtained with the 1.0-meter SAINT-EX, 0.60-meter TRAPPIST-North, and 1.2-meter FLWO telescopes to find a planetary size of 2.2 R\u2295 and an orbital period of 35.19 days. In addition, we make use of archival data, high-resolution imaging, and vetting packages to support our planetary interpretation. \n\nResults. With its long period and high eccentricity, TOI-2257 b falls into a novel slice of parameter space. Despite the planet's low equilibrium temperature (~256 K), its host star's small size (R_* = 0.311 \u00b1 0.015) and relative infrared brightness (K_(mag) = 10.7) make it a suitable candidate for atmospheric exploration via transmission spectroscopy.",
"doi": "10.1051/0004-6361/202142280",
"issn": "0004-6361",
"publisher": "EDP Sciences",
"publication": "Astronomy and Astrophysics",
"publication_date": "2022-01",
"volume": "657",
"pages": "Art. No. A45"
},
{
"id": "authors:azysk-ahf56",
"collection": "authors",
"collection_id": "azysk-ahf56",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211203-174947953",
"type": "article",
"title": "GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star",
"author": [
{
"family_name": "Lam",
"given_name": "Kristine W. F.",
"orcid": "0000-0002-9910-6088",
"clpid": "Lam-Kristine-W-F"
},
{
"family_name": "Csizmadia",
"given_name": "Szil\u00e1rd",
"orcid": "0000-0001-6803-9698"
},
{
"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": "Gandolfi",
"given_name": "Davide",
"orcid": "0000-0001-8627-9628"
},
{
"family_name": "Padovan",
"given_name": "Sebastiano",
"orcid": "0000-0002-8652-3704"
},
{
"family_name": "Esposito",
"given_name": "Massimiliano",
"orcid": "0000-0002-6893-4534"
},
{
"family_name": "Hellier",
"given_name": "Coel",
"orcid": "0000-0002-3439-1439"
},
{
"family_name": "Hirano",
"given_name": "Teruyuki",
"orcid": "0000-0003-3618-7535"
},
{
"family_name": "Livingston",
"given_name": "John",
"orcid": "0000-0002-4881-3620"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
},
{
"family_name": "Smith",
"given_name": "Alexis M. S.",
"orcid": "0000-0002-2386-4341"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Mathur",
"given_name": "Savita",
"orcid": "0000-0002-0129-0316"
},
{
"family_name": "Garcia",
"given_name": "Rafael A.",
"orcid": "0000-0002-8854-3776"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Santos",
"given_name": "Nuno C.",
"orcid": "0000-0003-4422-2919"
},
{
"family_name": "Dai",
"given_name": "Fei",
"orcid": "0000-0002-8958-0683",
"clpid": "Dai-Fei"
},
{
"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": "Albrecht",
"given_name": "Simon",
"orcid": "0000-0003-1762-8235"
},
{
"family_name": "Almenara",
"given_name": "Jose M.",
"orcid": "0000-0003-3208-9815"
},
{
"family_name": "Artigau",
"given_name": "\u00c9tienne",
"orcid": "0000-0003-3506-5667"
},
{
"family_name": "Barrag\u00e1n",
"given_name": "Oscar",
"orcid": "0000-0003-0563-0493"
},
{
"family_name": "Bouchy",
"given_name": "Fran\u00e7ois",
"orcid": "0000-0002-7613-393X"
},
{
"family_name": "Cabrera",
"given_name": "Juan",
"orcid": "0000-0001-6653-5487"
},
{
"family_name": "Charbonneau",
"given_name": "David",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Chaturvedi",
"given_name": "Priyanka",
"orcid": "0000-0002-1887-1192"
},
{
"family_name": "Chaushev",
"given_name": "Alexander",
"orcid": "0000-0003-0061-5446"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Cochran",
"given_name": "William D.",
"orcid": "0000-0001-9662-3496"
},
{
"family_name": "De Meideiros",
"given_name": "Jos\u00e9 R.",
"orcid": "0000-0001-8218-1586"
},
{
"family_name": "Delfosse",
"given_name": "Xavier",
"orcid": "0000-0001-5099-7978"
},
{
"family_name": "D\u00edaz",
"given_name": "Rodrigo F.",
"orcid": "0000-0001-9289-5160"
},
{
"family_name": "Doyon",
"given_name": "Ren\u00e9",
"orcid": "0000-0001-5485-4675"
},
{
"family_name": "Eigm\u00fcller",
"given_name": "Philipp",
"orcid": "0000-0003-4096-0594"
},
{
"family_name": "Figueira",
"given_name": "Pedro",
"orcid": "0000-0001-8504-283X"
},
{
"family_name": "Forveille",
"given_name": "Thierry",
"orcid": "0000-0003-0536-4607"
},
{
"family_name": "Fridlund",
"given_name": "Malcolm",
"orcid": "0000-0002-0855-8426"
},
{
"family_name": "Gaisn\u00e9",
"given_name": "Guillaume"
},
{
"family_name": "Goffo",
"given_name": "Elisa",
"orcid": "0000-0001-9670-961X"
},
{
"family_name": "Georgieva",
"given_name": "Iskra",
"orcid": "0000-0002-5056-1899"
},
{
"family_name": "Grziwa",
"given_name": "Sascha",
"orcid": "0000-0003-3370-4058"
},
{
"family_name": "Guenther",
"given_name": "Eike",
"orcid": "0000-0002-9130-6747"
},
{
"family_name": "Hatzes",
"given_name": "Artie P.",
"orcid": "0000-0002-3404-8358"
},
{
"family_name": "Johnson",
"given_name": "Marshall C.",
"orcid": "0000-0002-5099-8185"
},
{
"family_name": "Kab\u00e1th",
"given_name": "Petr",
"orcid": "0000-0002-1623-5352"
},
{
"family_name": "Knudstrup",
"given_name": "Emil",
"orcid": "0000-0001-7880-594X"
},
{
"family_name": "Korth",
"given_name": "Judith",
"orcid": "0000-0002-0076-6239"
},
{
"family_name": "Lewin",
"given_name": "Pablo",
"orcid": "0000-0003-0828-6368"
},
{
"family_name": "Lissauer",
"given_name": "Jack J.",
"orcid": "0000-0001-6513-1659"
},
{
"family_name": "Lovis",
"given_name": "Christophe",
"orcid": "0000-0001-7120-5837"
},
{
"family_name": "Luque",
"given_name": "Rafael",
"orcid": "0000-0002-4671-2957"
},
{
"family_name": "Melo",
"given_name": "Claudio",
"orcid": "0000-0002-6090-8446"
},
{
"family_name": "Morgan",
"given_name": "Edward H.",
"orcid": "0000-0003-1447-6344"
},
{
"family_name": "Morris",
"given_name": "Robert",
"orcid": "0000-0001-9303-3204"
},
{
"family_name": "Mayor",
"given_name": "Michel",
"orcid": "0000-0002-9352-5935"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Osborne",
"given_name": "Hannah L. M.",
"orcid": "0000-0002-4143-4767"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Pepe",
"given_name": "Francesco",
"orcid": "0000-0002-9815-773X"
},
{
"family_name": "Persson",
"given_name": "Carina M.",
"orcid": "0000-0003-1257-5146"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Rauer",
"given_name": "Heike",
"orcid": "0000-0002-6510-1828"
},
{
"family_name": "Redfield",
"given_name": "Seth",
"orcid": "0000-0003-3786-3486"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "S\u00e9gransan",
"given_name": "Damien",
"orcid": "0000-0003-2355-8034"
},
{
"family_name": "Serrano",
"given_name": "Luisa M.",
"orcid": "0000-0001-9211-3691"
},
{
"family_name": "Smith",
"given_name": "Jeffrey C.",
"orcid": "0000-0002-6148-7903"
},
{
"family_name": "\u0160ubjak",
"given_name": "J\u00e1n",
"orcid": "0000-0002-5313-9722"
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Udry",
"given_name": "St\u00e9phane",
"orcid": "0000-0001-7576-6236"
},
{
"family_name": "Van Eylen",
"given_name": "Vincent",
"orcid": "0000-0001-5542-8870"
},
{
"family_name": "Vezie",
"given_name": "Michael",
"orcid": "0000-0002-7930-1775"
}
],
"abstract": "Ultrashort-period (USP) exoplanets have orbital periods shorter than 1 day. Precise masses and radii of USP exoplanets could provide constraints on their unknown formation and evolution processes. We report the detection and characterization of the USP planet GJ 367b using high-precision photometry and radial velocity observations. GJ 367b orbits a bright (V-band magnitude of 10.2), nearby, and red (M-type) dwarf star every 7.7 hours. GJ 367b has a radius of 0.718 \u00b1 0.054 Earth-radii and a mass of 0.546 \u00b1 0.078 Earth-masses, making it a sub-Earth planet. The corresponding bulk density is 8.106 \u00b1 2.165 grams per cubic centimeter\u2014close to that of iron. An interior structure model predicts that the planet has an iron core radius fraction of 86 \u00b1 5%, similar to that of Mercury's interior.",
"doi": "10.1126/science.aay3253",
"issn": "0036-8075",
"publisher": "American Association for the Advancement of Science",
"publication": "Science",
"publication_date": "2021-12-03",
"series_number": "6572",
"volume": "374",
"issue": "6572",
"pages": "1271-1275"
},
{
"id": "authors:2f7fb-qkd52",
"collection": "authors",
"collection_id": "2f7fb-qkd52",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211122-203143614",
"type": "article",
"title": "TIC 172900988: A Transiting Circumbinary Planet Detected in One Sector of TESS Data",
"author": [
{
"family_name": "Kostov",
"given_name": "Veselin B.",
"orcid": "0000-0001-9786-1031",
"clpid": "Kostov-Veselin-B"
},
{
"family_name": "Powell",
"given_name": "Brian P.",
"orcid": "0000-0003-0501-2636"
},
{
"family_name": "Orosz",
"given_name": "Jerome A.",
"orcid": "0000-0001-9647-2886"
},
{
"family_name": "Welsh",
"given_name": "William F.",
"orcid": "0000-0003-2381-5301"
},
{
"family_name": "Cochran",
"given_name": "William",
"orcid": "0000-0001-9662-3496"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Endl",
"given_name": "Michael",
"orcid": "0000-0002-7714-6310"
},
{
"family_name": "Hellier",
"given_name": "Coel",
"orcid": "0000-0002-3439-1439"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "MacQueen",
"given_name": "Phillip"
},
{
"family_name": "Pepper",
"given_name": "Joshua",
"orcid": "0000-0002-3827-8417"
},
{
"family_name": "Quarles",
"given_name": "Billy",
"orcid": "0000-0002-9644-8330"
},
{
"family_name": "Sairam",
"given_name": "Lalitha",
"orcid": "0000-0001-8102-3033"
},
{
"family_name": "Torres",
"given_name": "Guillermo",
"orcid": "0000-0002-5286-0251"
},
{
"family_name": "Wilson",
"given_name": "Robert F.",
"orcid": "0000-0002-4235-6369"
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{
"family_name": "Bergeron",
"given_name": "Serge",
"orcid": "0000-0003-0846-1744"
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{
"family_name": "Boyce",
"given_name": "Pat"
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{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Buchheim",
"given_name": "Robert"
},
{
"family_name": "Christiansen",
"given_name": "Caleb Ben"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Conti",
"given_name": "Dennis M.",
"orcid": "0000-0003-2239-0567"
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{
"family_name": "Dixon",
"given_name": "Scott"
},
{
"family_name": "Guerra",
"given_name": "Pere",
"orcid": "0000-0002-4308-2339"
},
{
"family_name": "Haghighipour",
"given_name": "Nader",
"orcid": "0000-0002-5234-6375"
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{
"family_name": "Herman",
"given_name": "Jeffrey"
},
{
"family_name": "Hintz",
"given_name": "Eric G.",
"orcid": "0000-0002-9867-7938"
},
{
"family_name": "Howard",
"given_name": "Ward S.",
"orcid": "0000-0002-0583-0949"
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{
"family_name": "Jensen",
"given_name": "Eric L. N.",
"orcid": "0000-0002-4625-7333"
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{
"family_name": "Kielkopf",
"given_name": "John F.",
"orcid": "0000-0003-0497-2651"
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{
"family_name": "Kruse",
"given_name": "Ethan",
"orcid": "0000-0002-0493-1342"
},
{
"family_name": "Law",
"given_name": "Nicholas M.",
"orcid": "0000-0001-9380-6457"
},
{
"family_name": "Martin",
"given_name": "David",
"orcid": "0000-0002-7595-6360"
},
{
"family_name": "Maxted",
"given_name": "Pierre F. L.",
"orcid": "0000-0003-3794-1317"
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{
"family_name": "Montet",
"given_name": "Benjamin T.",
"orcid": "0000-0001-7516-8308"
},
{
"family_name": "Murgas",
"given_name": "Felipe",
"orcid": "0000-0001-9087-1245"
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{
"family_name": "Nelson",
"given_name": "Matt"
},
{
"family_name": "Olmschenk",
"given_name": "Greg",
"orcid": "0000-0001-8472-2219"
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{
"family_name": "Otero",
"given_name": "Sebastian"
},
{
"family_name": "Quimby",
"given_name": "Robert",
"orcid": "0000-0001-9171-5236"
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{
"family_name": "Richmond",
"given_name": "Michael",
"orcid": "0000-0002-7676-8302"
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{
"family_name": "Schwarz",
"given_name": "Richard P.",
"orcid": "0000-0001-8227-1020"
},
{
"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": "Stephens",
"given_name": "Denise C.",
"orcid": "0000-0003-4658-7567"
},
{
"family_name": "Triaud",
"given_name": "Amaury H. M. J.",
"orcid": "0000-0002-5510-8751"
},
{
"family_name": "Ulowetz",
"given_name": "Joe"
},
{
"family_name": "Walter",
"given_name": "Bradley S."
},
{
"family_name": "Wiley",
"given_name": "Edward"
},
{
"family_name": "Wood",
"given_name": "David"
},
{
"family_name": "Yenawine",
"given_name": "Mitchell",
"orcid": "0000-0001-6556-1536"
},
{
"family_name": "Agol",
"given_name": "Eric",
"orcid": "0000-0002-0802-9145"
},
{
"family_name": "Barclay",
"given_name": "Thomas",
"orcid": "0000-0001-7139-2724"
},
{
"family_name": "Beatty",
"given_name": "Thomas G.",
"orcid": "0000-0002-9539-4203"
},
{
"family_name": "Boisse",
"given_name": "Isabelle",
"orcid": "0000-0001-8388-8399"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Christiansen",
"given_name": "Jessie",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Col\u00f3n",
"given_name": "Knicole D.",
"orcid": "0000-0001-8020-7121"
},
{
"family_name": "Deleuil",
"given_name": "Magali",
"orcid": "0000-0001-6036-0225"
},
{
"family_name": "Doyle",
"given_name": "Laurance"
},
{
"family_name": "Fausnaugh",
"given_name": "Michael",
"orcid": "0000-0002-9113-7162"
},
{
"family_name": "F\u0171r\u00e9sz",
"given_name": "G\u00e1bor"
},
{
"family_name": "Gilbert",
"given_name": "Emily A.",
"orcid": "0000-0002-0388-8004"
},
{
"family_name": "H\u00e9brard",
"given_name": "Guillaume",
"orcid": "0000-0001-5450-7067"
},
{
"family_name": "James",
"given_name": "David J.",
"orcid": "0000-0001-5160-4486"
},
{
"family_name": "Jenkins",
"given_name": "Jon",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529"
},
{
"family_name": "Kopparapu",
"given_name": "Ravi",
"orcid": "0000-0002-5893-2471"
},
{
"family_name": "Li",
"given_name": "Gongjie",
"orcid": "0000-0001-8308-0808"
},
{
"family_name": "Lissauer",
"given_name": "Jack J.",
"orcid": "0000-0001-6513-1659"
},
{
"family_name": "Lund",
"given_name": "Michael B.",
"orcid": "0000-0003-2527-1598",
"clpid": "Lund-Michael-B"
},
{
"family_name": "Majewski",
"given_name": "Steve R.",
"orcid": "0000-0003-2025-3147"
},
{
"family_name": "Mazeh",
"given_name": "Tsevi",
"orcid": "0000-0002-3569-3391"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Quintana",
"given_name": "Elisa",
"orcid": "0000-0003-1309-2904"
},
{
"family_name": "Ricker",
"given_name": "George",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Rodriguez",
"given_name": "Joseph E.",
"orcid": "0000-0001-8812-0565"
},
{
"family_name": "Rowe",
"given_name": "Jason",
"orcid": "0000-0002-5904-1865"
},
{
"family_name": "Santerne",
"given_name": "Alexander",
"orcid": "0000-0002-3586-1316"
},
{
"family_name": "Schlieder",
"given_name": "Joshua",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Standing",
"given_name": "Matthew R.",
"orcid": "0000-0002-7608-8905"
},
{
"family_name": "Stevens",
"given_name": "Daniel J.",
"orcid": "0000-0002-5951-8328"
},
{
"family_name": "Ting",
"given_name": "Eric B.",
"orcid": "0000-0002-8219-9505"
},
{
"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 first discovery of a transiting circumbinary planet detected from a single sector of Transiting Exoplanet Survey Satellite (TESS) data. During Sector 21, the planet TIC 172900988b transited the primary star and then five days later it transited the secondary star. The binary is itself eclipsing, with a period P \u2248 19.7 days and an eccentricity e \u2248 0.45. Archival data from ASAS-SN, Evryscope, KELT, and SuperWASP reveal a prominent apsidal motion of the binary orbit, caused by the dynamical interactions between the binary and the planet. A comprehensive photodynamical analysis of the TESS, archival and follow-up data yields stellar masses and radii of M\u2081 = 1.2384 \u00b10.0007 M_\u2299 and R\u2081 = 1.3827 \u00b1 0.0016 R_\u2299 for the primary and M\u2082 = 1.2019 \u00b1 0.0007 M_\u2299 and R\u2082 = 1.3124 \u00b1 0.0012 R_\u2299 for the secondary. The radius of the planet is R\u2083 = 11.25 \u00b1 0.44 R_\u2295 (1.004 \u00b1 0.039 R_(Jup)). The planet's mass and orbital properties are not uniquely determined\u2014there are six solutions with nearly equal likelihood. Specifically, we find that the planet's mass is in the range of 824 \u2272 M\u2083 \u2272 981 M\u2295 (2.65 \u2272 M\u2083 \u2272 3.09 M_(Jup)), its orbital period could be 188.8, 190.4, 194.0, 199.0, 200.4, or 204.1 days, and the eccentricity is between 0.02 and 0.09. At V = 10.141 mag, the system is accessible for high-resolution spectroscopic observations, e.g., the Rossiter\u2013McLaughlin effect and transit spectroscopy.",
"doi": "10.3847/1538-3881/ac223a",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-12",
"series_number": "6",
"volume": "162",
"issue": "6",
"pages": "Art. No. 234"
},
{
"id": "authors:q2964-zhx94",
"collection": "authors",
"collection_id": "q2964-zhx94",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211203-235102087",
"type": "article",
"title": "Scaling K2. IV. A Uniform Planet Sample for Campaigns 1\u20138 and 10\u201318",
"author": [
{
"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",
"clpid": "Hardegree-Ullman-Kevin-K"
},
{
"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": "Duffy Adkins",
"given_name": "Britt",
"clpid": "Duffy-Adkins-Britt"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233",
"clpid": "Dressing-C-D"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062",
"clpid": "Schlieder-Joshua-E"
}
],
"abstract": "We provide the first full K2 transiting exoplanet sample, using photometry from Campaigns 1\u20138 and 10\u201318, derived through an entirely automated procedure. This homogeneous planet candidate catalog is crucial to perform a robust demographic analysis of transiting exoplanets with K2. We identify 747 unique planet candidates and 57 multiplanet systems. Of these candidates, 366 have not been previously identified, including one resonant multiplanet system and one system with two short-period gas giants. By automating the construction of this list, measurements of sample biases (completeness and reliability) can be quantified. We carried out a light-curve-level injection/recovery test of artificial transit signals and found a maximum completeness of 61%, a consequence of the significant detrending required for K2 data analysis. Through this operation we attained measurements of the detection efficiency as a function of signal strength, enabling future population analysis using this sample. We assessed the reliability of our planet sample by testing our vetting software EDI-Vetter against inverted transit-free light curves. We estimate that 91% of our planet candidates are real astrophysical signals, increasing up to 94% when limited to the FGKM dwarf stellar population. We also constrain the contamination rate from background eclipsing binaries to less than 5%. The presented catalog, along with the completeness and reliability measurements, enable robust exoplanet demographic studies to be carried out across the fields observed by the K2 mission for the first time.",
"doi": "10.3847/1538-3881/ac2309",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-12",
"series_number": "6",
"volume": "162",
"issue": "6",
"pages": "Art. No. 259"
},
{
"id": "authors:ypyws-st083",
"collection": "authors",
"collection_id": "ypyws-st083",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211116-162850311",
"type": "article",
"title": "TOI-1518b: A Misaligned Ultra-hot Jupiter with Iron in Its Atmosphere",
"author": [
{
"family_name": "Cabot",
"given_name": "Samuel H. C.",
"orcid": "0000-0001-9749-6150",
"clpid": "Cabot-Samuel-H-C"
},
{
"family_name": "Bello-Arufe",
"given_name": "Aaron",
"orcid": "0000-0003-3355-1223"
},
{
"family_name": "Mendon\u00e7a",
"given_name": "Jo\u00e3o M.",
"orcid": "0000-0002-6907-4476"
},
{
"family_name": "Tronsgaard",
"given_name": "Ren\u00e9",
"orcid": "0000-0003-1001-0707"
},
{
"family_name": "Wong",
"given_name": "Ian",
"orcid": "0000-0001-9665-8429"
},
{
"family_name": "Zhou",
"given_name": "George",
"orcid": "0000-0002-4891-3517"
},
{
"family_name": "Buchhave",
"given_name": "Lars A.",
"orcid": "0000-0003-1605-5666"
},
{
"family_name": "Fischer",
"given_name": "Debra A.",
"orcid": "0000-0003-2221-0861"
},
{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
},
{
"family_name": "Antoci",
"given_name": "Victoria",
"orcid": "0000-0002-0865-3650"
},
{
"family_name": "Baker",
"given_name": "David",
"orcid": "0000-0002-2970-0532"
},
{
"family_name": "Belinski",
"given_name": "Alexander A.",
"orcid": "0000-0003-3469-0989"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498"
},
{
"family_name": "Bouma",
"given_name": "Luke G.",
"orcid": "0000-0002-0514-5538"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Goliguzova",
"given_name": "Maria V.",
"orcid": "0000-0003-2228-7914"
},
{
"family_name": "Hagey",
"given_name": "Simone",
"orcid": "0000-0001-8072-0590"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Jensen",
"given_name": "Eric L. N.",
"orcid": "0000-0002-4625-7333"
},
{
"family_name": "Kidwell",
"given_name": "Richard C., Jr."
},
{
"family_name": "Laloum",
"given_name": "Didier"
},
{
"family_name": "Massey",
"given_name": "Bob",
"orcid": "0000-0001-8879-7138"
},
{
"family_name": "McLeod",
"given_name": "Kim K.",
"orcid": "0000-0001-9504-1486"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Morgan",
"given_name": "Edward H.",
"orcid": "0000-0003-1447-6344"
},
{
"family_name": "Ricker",
"given_name": "George",
"orcid": "0000-0003-2058-6662"
},
{
"family_name": "Safonov",
"given_name": "Boris S.",
"orcid": "0000-0003-1713-3208"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Seager",
"given_name": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Smith",
"given_name": "Jeffrey C.",
"orcid": "0000-0002-6148-7903"
},
{
"family_name": "Srdoc",
"given_name": "Gregor"
},
{
"family_name": "Strakhov",
"given_name": "Ivan A.",
"orcid": "0000-0003-0647-6133"
},
{
"family_name": "Torres",
"given_name": "Guillermo",
"orcid": "0000-0002-5286-0251"
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
},
{
"family_name": "Vezie",
"given_name": "Michael"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
}
],
"abstract": "We present the discovery of TOI-1518b\u2014an ultra-hot Jupiter orbiting a bright star (V = 8.95). The transiting planet is confirmed using high-resolution optical transmission spectra from EXPRES. It is inflated, with R_p = 1.875 \u00b1 0.053 R_J, and exhibits several interesting properties, including a misaligned orbit (240.34^(+0.93)_(\u22120.98) degrees) and nearly grazing transit (b = 0.9036^(+0.0061)_(\u22120.0053)). The planet orbits a fast-rotating F0 host star (T_(eff) \u2243 7300 K) in 1.9 days and experiences intense irradiation. Notably, the TESS data show a clear secondary eclipse with a depth of 364 \u00b1 28 ppm and a significant phase-curve signal, from which we obtain a relative day\u2013night planetary flux difference of roughly 320 ppm and a 5.2\u03c3 detection of ellipsoidal distortion on the host star. Prompted by recent detections of atomic and ionized species in ultra-hot Jupiter atmospheres, we conduct an atmospheric cross-correlation analysis. We detect neutral iron (5.2\u03c3), at K_p = 157\u207a\u2076\u2078\u208b\u2084\u2084 km s\u207b\u00b9 and V_(sys) = \u221216\u207a\u00b2\u208b\u2084, adding another object to the small sample of highly irradiated gas-giant planets with Fe detections in transmission. Detections so far favor particularly inflated gas giants with radii \u2273 1.78 R_J, which may be due to observational bias. With an equilibrium temperature of T_(eq) = 2492 \u00b1 38 K and a measured dayside brightness temperature of 3237 \u00b1 59 K (assuming zero geometric albedo), TOI-1518b is a promising candidate for future emission spectroscopy to probe for a thermal inversion.",
"doi": "10.3847/1538-3881/ac1ba3",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-11",
"series_number": "5",
"volume": "162",
"issue": "5",
"pages": "Art. No. 218"
},
{
"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"
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{
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{
"family_name": "Claytor",
"given_name": "Zachary R.",
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{
"family_name": "Collins",
"given_name": "Karen A.",
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{
"family_name": "Collins",
"given_name": "Kevin I.",
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{
"family_name": "Dai",
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{
"family_name": "Dalba",
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{
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{
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{
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{
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{
"family_name": "Gonzales",
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{
"family_name": "Hill",
"given_name": "Michelle L.",
"orcid": "0000-0002-0139-4756"
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{
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"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443"
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{
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"given_name": "Eric L. N.",
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{
"family_name": "Kosiarek",
"given_name": "Molly R.",
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{
"family_name": "de Leon",
"given_name": "Jerome P.",
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{
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"given_name": "Michael B.",
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{
"family_name": "Luque",
"given_name": "Rafael",
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{
"family_name": "Mayo",
"given_name": "Andrew W.",
"orcid": "0000-0002-7216-2135"
},
{
"family_name": "Mo\u010dnik",
"given_name": "Teo",
"orcid": "0000-0003-4603-556X"
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{
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{
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{
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{
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"given_name": "Ryan A.",
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{
"family_name": "Schlieder",
"given_name": "Joshua E.",
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"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
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{
"family_name": "Stassun",
"given_name": "Keivan G.",
"orcid": "0000-0002-3481-9052"
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{
"family_name": "Twicken",
"given_name": "Joe",
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{
"family_name": "Wang",
"given_name": "Gavin",
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{
"family_name": "Yahalomi",
"given_name": "Daniel A.",
"orcid": "0000-0003-4755-584X"
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{
"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"
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{
"family_name": "Vanderspek",
"given_name": "Roland",
"orcid": "0000-0001-6763-6562"
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{
"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:2da9r-0hs13",
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"collection_id": "2da9r-0hs13",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20211012-211828207",
"type": "article",
"title": "TOI-3362b: A Proto Hot Jupiter Undergoing High-eccentricity Tidal Migration",
"author": [
{
"family_name": "Dong",
"given_name": "Jiayin",
"orcid": "0000-0002-3610-6953",
"clpid": "Dong-Jiayin"
},
{
"family_name": "Huang",
"given_name": "Chelsea X.",
"orcid": "0000-0003-0918-7484"
},
{
"family_name": "Zhou",
"given_name": "George",
"orcid": "0000-0002-4891-3517"
},
{
"family_name": "Dawson",
"given_name": "Rebekah I.",
"orcid": "0000-0001-9677-1296"
},
{
"family_name": "Rodriguez",
"given_name": "Joseph E.",
"orcid": "0000-0001-8812-0565"
},
{
"family_name": "Eastman",
"given_name": "Jason D.",
"orcid": "0000-0003-3773-5142"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Triaud",
"given_name": "Amaury H. M. J.",
"orcid": "0000-0002-5510-8751"
},
{
"family_name": "Wang",
"given_name": "Songhu",
"orcid": "0000-0002-7846-6981"
},
{
"family_name": "Beatty",
"given_name": "Thomas",
"orcid": "0000-0002-9539-4203"
},
{
"family_name": "Jackson",
"given_name": "Jonathon M.",
"orcid": "0000-0002-0323-4828"
},
{
"family_name": "Collins",
"given_name": "Kevin I.",
"orcid": "0000-0003-2781-3207"
},
{
"family_name": "Abe",
"given_name": "Lyu"
},
{
"family_name": "Suarez",
"given_name": "Olga",
"orcid": "0000-0002-3503-3617"
},
{
"family_name": "Crouzet",
"given_name": "Nicolas",
"orcid": "0000-0001-7866-8738"
},
{
"family_name": "M\u00e9karnia",
"given_name": "Djamel",
"orcid": "0000-0001-5000-7292"
},
{
"family_name": "Dransfield",
"given_name": "Georgina",
"orcid": "0000-0002-3937-630X"
},
{
"family_name": "Jensen",
"given_name": "Eric L. N.",
"orcid": "0000-0002-4625-7333"
},
{
"family_name": "Stockdale",
"given_name": "Chris",
"orcid": "0000-0003-2163-1437"
},
{
"family_name": "Barkaoui",
"given_name": "Khalid",
"orcid": "0000-0003-1464-9276"
},
{
"family_name": "Heitzmann",
"given_name": "Alexis",
"orcid": "0000-0002-8091-7526"
},
{
"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": "Wittenmyer",
"given_name": "Robert A.",
"orcid": "0000-0001-9957-9304"
},
{
"family_name": "Okumura",
"given_name": "Jack",
"orcid": "0000-0002-4876-8540"
},
{
"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": "Kane",
"given_name": "Stephen R.",
"orcid": "0000-0002-7084-0529",
"clpid": "Kane-Stephen-R"
},
{
"family_name": "Kielkopf",
"given_name": "John",
"orcid": "0000-0003-0497-2651"
},
{
"family_name": "Liu",
"given_name": "Huigen",
"orcid": "0000-0001-5162-1753"
},
{
"family_name": "Plavchan",
"given_name": "Peter",
"orcid": "0000-0002-8864-1667"
},
{
"family_name": "Mengel",
"given_name": "Matthew W.",
"orcid": "0000-0002-7830-6822"
},
{
"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": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Paegert",
"given_name": "Martin",
"orcid": "0000-0001-8120-7457"
}
],
"abstract": "High-eccentricity tidal migration is a possible way for giant planets to be placed in short-period orbits. If this happens often, one would expect to catch proto hot Jupiters on highly elliptical orbits undergoing high-eccentricity tidal migration. As of yet, few such systems have been discovered. Here, we introduce TOI-3362b (TIC-464300749b), an 18.1 day, 5 M_(Jup) planet orbiting a main-sequence F-type star that is likely undergoing high-eccentricity tidal migration. The orbital eccentricity is 0.815_(-0.032)^(+0.023). With a semimajor axis of 0.153 _(-0.003)^(+0.002) au, the planet's orbit is expected to shrink to a final orbital radius of 0.051_(-0.006)^(+0.008) au after complete tidal circularization. Several mechanisms could explain the extreme value of the planet's eccentricity, such as planet\u2013planet scattering and secular interactions. Such hypotheses can be tested with follow-up observations of the system, e.g., measuring the stellar obliquity and searching for companions in the system with precise, long-term radial-velocity observations. The variation in the planet's equilibrium temperature as it orbits the host star and the tidal heating at periapse make this planet an intriguing target for atmospheric modeling and observation. Because the planet's orbital period of 18.1 days is near the limit of TESS's period sensitivity, even a few such discoveries suggest that proto hot Jupiters may be quite common.",
"doi": "10.3847/2041-8213/ac2600",
"issn": "2041-8205",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Letters",
"publication_date": "2021-10-10",
"series_number": "1",
"volume": "920",
"issue": "1",
"pages": "Art. No. L16"
},
{
"id": "authors:ekppk-55c55",
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"collection_id": "ekppk-55c55",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210610-101449926",
"type": "article",
"title": "The TESS Objects of Interest Catalog from the TESS Prime Mission",
"author": [
{
"family_name": "Guerrero",
"given_name": "Natalia M.",
"orcid": "0000-0002-5169-9427",
"clpid": "Guerrero-Natalia-M"
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{
"family_name": "Seager",
"given_name": "S.",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Huang",
"given_name": "Chelsea X.",
"orcid": "0000-0003-0918-7484"
},
{
"family_name": "Vanderburg",
"given_name": "Andrew",
"orcid": "0000-0001-7246-5438"
},
{
"family_name": "Soto",
"given_name": "Aylin Garcia",
"orcid": "0000-0001-9828-3229"
},
{
"family_name": "Mireles",
"given_name": "Ismael",
"orcid": "0000-0002-4510-2268"
},
{
"family_name": "Hesse",
"given_name": "Katharine",
"orcid": "0000-0002-2135-9018"
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{
"family_name": "Fong",
"given_name": "William",
"orcid": "0000-0003-0241-2757"
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{
"family_name": "Glidden",
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{
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"given_name": "Avi",
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},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
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{
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"given_name": "Jennifer",
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{
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{
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{
"family_name": "Burke",
"given_name": "Christopher J.",
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"given_name": "Daniel A.",
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"family_name": "Dittmann",
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"family_name": "Louie",
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"family_name": "Rowden",
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{
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{
"family_name": "Christiansen",
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{
"family_name": "Ciardi",
"given_name": "David R.",
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{
"family_name": "Swain",
"given_name": "Melanie A.",
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{
"family_name": "Mullally",
"given_name": "Susan E.",
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{
"family_name": "Fleming",
"given_name": "Scott W.",
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{
"family_name": "Rodriguez",
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{
"family_name": "Boyd",
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{
"family_name": "Quintana",
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],
"abstract": "We present 2241 exoplanet candidates identified with data from the Transiting Exoplanet Survey Satellite (TESS) during its 2 yr Prime Mission. We list these candidates in the TESS Objects of Interest (TOI) Catalog, which includes both new planet candidates found by TESS and previously known planets recovered by TESS observations. We describe the process used to identify TOIs, investigate the characteristics of the new planet candidates, and discuss some notable TESS planet discoveries. The TOI catalog includes an unprecedented number of small planet candidates around nearby bright stars, which are well suited for detailed follow-up observations. The TESS data products for the Prime Mission (sectors 1\u201326), including the TOI catalog, light curves, full-frame images, and target pixel files, are publicly available at the Mikulski Archive for Space Telescopes.",
"doi": "10.3847/1538-4365/abefe1",
"issn": "0067-0049",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Supplement Series",
"publication_date": "2021-06",
"series_number": "2",
"volume": "254",
"issue": "2",
"pages": "Art. No. 39"
},
{
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"type": "article",
"title": "K2-138 g: Spitzer Spots a Sixth Planet for the Citizen Science System",
"author": [
{
"family_name": "Hardegree-Ullman",
"given_name": "Kevin K.",
"orcid": "0000-0003-3702-0382",
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{
"family_name": "Christiansen",
"given_name": "Jessie L.",
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{
"family_name": "Ciardi",
"given_name": "David R.",
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"clpid": "Ciardi-David-R"
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{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
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"clpid": "Crossfield-Ian-J-M"
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{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233",
"clpid": "Dressing-Courtney-D"
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{
"family_name": "Livingston",
"given_name": "John H.",
"orcid": "0000-0002-4881-3620",
"clpid": "Livingston-John-H"
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{
"family_name": "Volk",
"given_name": "Kathryn",
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{
"family_name": "Agol",
"given_name": "Eric",
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"clpid": "Agol-Eric"
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"family_name": "Barclay",
"given_name": "Thomas",
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{
"family_name": "Barentsen",
"given_name": "Geert",
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{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
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{
"family_name": "Gorjian",
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{
"family_name": "Kristiansen",
"given_name": "Martti H.",
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"abstract": "K2 greatly extended Kepler's ability to find new planets, but it was typically limited to identifying transiting planets with orbital periods below 40 days. While analyzing K2 data through the Exoplanet Explorers project, citizen scientists helped discover one super-Earth and four sub-Neptune sized planets in the relatively bright (V = 12.21, K = 10.3) K2-138 system, all which orbit near 3:2 mean-motion resonances. The K2 light curve showed two additional transit events consistent with a sixth planet. Using Spitzer photometry, we validate the sixth planet's orbital period of 41.966 \u00b1 0.006 days and measure a radius of 3.44_(-0.31)^(+0.32) R_\u2295, solidifying K2-138 as the K2 system with the most currently known planets. There is a sizeable gap between the outer two planets, since the fifth planet in the system, K2-138 f, orbits at 12.76 days. We explore the possibility of additional nontransiting planets in the gap between f and g. Due to the relative brightness of the K2-138 host star, and the near resonance of the inner planets, K2-138 could be a key benchmark system for both radial velocity and transit-timing variation mass measurements, and indeed radial velocity masses for the inner four planets have already been obtained. With its five sub-Neptunes and one super-Earth, the K2-138 system provides a unique test bed for comparative atmospheric studies of warm to temperate planets of similar size, dynamical studies of near-resonant planets, and models of planet formation and migration.",
"doi": "10.3847/1538-3881/abeab0",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-05",
"series_number": "5",
"volume": "161",
"issue": "5",
"pages": "Art. No. 219"
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"title": "TESS Delivers Five New Hot Giant Planets Orbiting Bright Stars from the Full-frame Images",
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{
"family_name": "O'Dwyer",
"given_name": "Tanner"
},
{
"family_name": "Okumura",
"given_name": "Jack",
"orcid": "0000-0002-4876-8540"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Pepper",
"given_name": "Joshua",
"orcid": "0000-0002-3827-8417"
},
{
"family_name": "Quintana",
"given_name": "Elisa V.",
"orcid": "0000-0003-1309-2904"
},
{
"family_name": "Sarkis",
"given_name": "Paula",
"orcid": "0000-0001-8128-3126"
},
{
"family_name": "Savel",
"given_name": "Arjun B.",
"orcid": "0000-0002-2454-768X"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Schnaible",
"given_name": "Chloe"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Sefako",
"given_name": "Ramotholo",
"orcid": "0000-0003-3904-6754"
},
{
"family_name": "Seidel",
"given_name": "Julia V.",
"orcid": "0000-0002-7990-9596"
},
{
"family_name": "Siverd",
"given_name": "Robert J.",
"orcid": "0000-0001-5016-3359"
},
{
"family_name": "Skinner",
"given_name": "Brett"
},
{
"family_name": "Stalport",
"given_name": "Manu"
},
{
"family_name": "Stevens",
"given_name": "Daniel J.",
"orcid": "0000-0002-5951-8328"
},
{
"family_name": "Stibbards",
"given_name": "Caitlin",
"orcid": "0000-0003-0091-3769"
},
{
"family_name": "Tinney",
"given_name": "C. G.",
"orcid": "0000-0002-7595-0970"
},
{
"family_name": "West",
"given_name": "R. G."
},
{
"family_name": "Yahalomi",
"given_name": "Daniel A.",
"orcid": "0000-0003-4755-584X"
},
{
"family_name": "Zhang",
"given_name": "Hui",
"orcid": "0000-0003-3491-6394"
}
],
"abstract": "We present the discovery and characterization of five hot and warm Jupiters\u2014TOI-628 b (TIC 281408474; HD 288842), TOI-640 b (TIC 147977348), TOI-1333 b (TIC 395171208, BD+47 3521A), TOI-1478 b (TIC 409794137), and TOI-1601 b (TIC 139375960)\u2014based on data from NASA's Transiting Exoplanet Survey Satellite (TESS). The five planets were identified from the full-frame images and were confirmed through a series of photometric and spectroscopic follow-up observations by the TESS Follow-up Observing Program Working Group. The planets are all Jovian size (R_P = 1.01\u20131.77 R_J) and have masses that range from 0.85 to 6.33 MJ. The host stars of these systems have F and G spectral types (5595 \u2264 T_(eff) \u2264 6460 K) and are all relatively bright (9.5 < V < 10.8, 8.2 < K < 9.3), making them well suited for future detailed characterization efforts. Three of the systems in our sample (TOI-640 b, TOI-1333 b, and TOI-1601 b) orbit subgiant host stars (log g < 4.1). TOI-640 b is one of only three known hot Jupiters to have a highly inflated radius (R_P > 1.7 RJ, possibly a result of its host star's evolution) and resides on an orbit with a period longer than 5 days. TOI-628 b is the most massive, hot Jupiter discovered to date by TESS with a measured mass of 6.31^(+0.28)_(-0.30) M_J and a statistically significant, nonzero orbital eccentricity of e = 0.074^(+0.021)_(-0.022). This planet would not have had enough time to circularize through tidal forces from our analysis, suggesting that it might be remnant eccentricity from its migration. The longest-period planet in this sample, TOI-1478 b (P = 10.18 days), is a warm Jupiter in a circular orbit around a near-solar analog. NASA's TESS mission is continuing to increase the sample of well-characterized hot and warm Jupiters, complementing its primary mission goals.",
"doi": "10.3847/1538-3881/abe38a",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-04",
"series_number": "4",
"volume": "161",
"issue": "4",
"pages": "Art. No. 194"
},
{
"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: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:726gr-9sf85",
"collection": "authors",
"collection_id": "726gr-9sf85",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20201208-105039183",
"type": "article",
"title": "Transmission Spectroscopy for the Warm Sub-Neptune HD 3167c: Evidence for Molecular Absorption and a Possible High-metallicity Atmosphere",
"author": [
{
"family_name": "Mikal-Evans",
"given_name": "Thomas",
"orcid": "0000-0001-5442-1300",
"clpid": "Mikal-Evans-Thomas"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891"
},
{
"family_name": "Benneke",
"given_name": "Bj\u00f6rn",
"orcid": "0000-0001-5578-1498"
},
{
"family_name": "Kreidberg",
"given_name": "Laura",
"orcid": "0000-0003-0514-1147"
},
{
"family_name": "Moses",
"given_name": "Julie",
"orcid": "0000-0002-8837-0035"
},
{
"family_name": "Morley",
"given_name": "Caroline V.",
"orcid": "0000-0002-4404-0456"
},
{
"family_name": "Thorngren",
"given_name": "Daniel",
"orcid": "0000-0002-5113-8558"
},
{
"family_name": "Molli\u00e8re",
"given_name": "Paul",
"orcid": "0000-0003-4096-7067"
},
{
"family_name": "Hardegree-Ullman",
"given_name": "Kevin K.",
"orcid": "0000-0003-3702-0382",
"clpid": "Hardegree-Ullman-Kevin-K"
},
{
"family_name": "Brewer",
"given_name": "John",
"orcid": "0000-0002-9873-1471"
},
{
"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": "Dragomir",
"given_name": "Diana",
"orcid": "0000-0003-2313-467X"
},
{
"family_name": "Dressing",
"given_name": "Courtney",
"orcid": "0000-0001-8189-0233"
},
{
"family_name": "Fortney",
"given_name": "Jonathan J.",
"orcid": "0000-0002-9843-4354"
},
{
"family_name": "Gorjian",
"given_name": "Varoujan",
"orcid": "0000-0002-8990-2101",
"clpid": "Gorjian-Varoujan"
},
{
"family_name": "Greene",
"given_name": "Thomas P.",
"orcid": "0000-0002-8963-8056"
},
{
"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": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"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": "Krick",
"given_name": "Jessica",
"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": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062"
},
{
"family_name": "Werner",
"given_name": "Michael",
"clpid": "Werner-Michael-W"
}
],
"abstract": "We present a transmission spectrum for the warm (500\u2212600 K) sub-Neptune HD 3167c obtained using the Hubble Space Telescope Wide Field Camera 3 infrared spectrograph. We combine these data, which span the 1.125\u20131.643 \u03bcm wavelength range, with broadband transit measurements made using Kepler/K2 (0.6\u20130.9 \u03bcm) and Spitzer/IRAC (4\u20135 \u03bcm). We find evidence for absorption by at least one of H\u2082O, HCN, CO\u2082, and CH\u2084 (Bayes factor 7.4; 2.5\u03c3 significance), although the data precision does not allow us to unambiguously discriminate between these molecules. The transmission spectrum rules out cloud-free hydrogen-dominated atmospheres with metallicities \u2264100\u00d7 solar at >5.8\u03c3 confidence. In contrast, good agreement with the data is obtained for cloud-free models assuming metallicities >700\u00d7 solar. However, for retrieval analyses that include the effect of clouds, a much broader range of metallicities (including subsolar) is consistent with the data, due to the degeneracy with cloud-top pressure. Self-consistent chemistry models that account for photochemistry and vertical mixing are presented for the atmosphere of HD 3167c. The predictions of these models are broadly consistent with our abundance constraints, although this is primarily due to the large uncertainties on the latter. Interior structure models suggest that the core mass fraction is >40%, independent of a rock or water core composition, and independent of atmospheric envelope metallicity up to 1000\u00d7 solar. We also report abundance measurements for 15 elements in the host star, showing that it has a very nearly solar composition.",
"doi": "10.3847/1538-3881/abc874",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-01",
"series_number": "1",
"volume": "161",
"issue": "1",
"pages": "Art. No. 18"
},
{
"id": "authors:ps0kw-jp990",
"collection": "authors",
"collection_id": "ps0kw-jp990",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20201102-101455863",
"type": "article",
"title": "The Occurrence of Rocky Habitable-zone Planets around Solar-like Stars from Kepler Data",
"author": [
{
"family_name": "Bryson",
"given_name": "Steve",
"orcid": "0000-0003-0081-1797",
"clpid": "Bryson-Steve"
},
{
"family_name": "Kunimoto",
"given_name": "Michelle",
"orcid": "0000-0001-9269-8060"
},
{
"family_name": "Kopparapu",
"given_name": "Ravi K.",
"orcid": "0000-0002-5893-2471"
},
{
"family_name": "Coughlin",
"given_name": "Jeffrey L.",
"orcid": "0000-0003-1634-9672"
},
{
"family_name": "Borucki",
"given_name": "William J."
},
{
"family_name": "Koch",
"given_name": "David"
},
{
"family_name": "Silva Aguirre",
"given_name": "Victor",
"orcid": "0000-0002-6137-903X"
},
{
"family_name": "Allen",
"given_name": "Christopher"
},
{
"family_name": "Barentsen",
"given_name": "Geert",
"orcid": "0000-0002-3306-3484"
},
{
"family_name": "Batalha",
"given_name": "Natalie M.",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Berger",
"given_name": "Travis",
"orcid": "0000-0002-2580-3614"
},
{
"family_name": "Boss",
"given_name": "Alan",
"orcid": "0000-0001-6974-9990"
},
{
"family_name": "Buchhave",
"given_name": "Lars A.",
"orcid": "0000-0003-1605-5666"
},
{
"family_name": "Burke",
"given_name": "Christopher J.",
"orcid": "0000-0002-7754-9486"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Campbell",
"given_name": "Jennifer R."
},
{
"family_name": "Catanzarite",
"given_name": "Joseph",
"orcid": "0000-0001-7980-4658"
},
{
"family_name": "Chandrasekharan",
"given_name": "Hema"
},
{
"family_name": "Chaplin",
"given_name": "William J.",
"orcid": "0000-0002-9760-7735"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Christensen-Dalsgaard",
"given_name": "Jorgen",
"orcid": "0000-0001-5137-0966"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Clarke",
"given_name": "Bruce D."
},
{
"family_name": "Cochran",
"given_name": "William D.",
"orcid": "0000-0001-9662-3496"
},
{
"family_name": "Dotson",
"given_name": "Jessie L.",
"orcid": "0000-0003-4206-5649"
},
{
"family_name": "Doyle",
"given_name": "Laurance R."
},
{
"family_name": "Seperuelo Duarte",
"given_name": "Eduardo",
"orcid": "0000-0003-4587-3764"
},
{
"family_name": "Dunham",
"given_name": "Edward W."
},
{
"family_name": "Dupree",
"given_name": "Andrea K.",
"orcid": "0000-0002-8985-8489"
},
{
"family_name": "Endl",
"given_name": "Michael",
"orcid": "0000-0002-7714-6310"
},
{
"family_name": "Fanson",
"given_name": "James L."
},
{
"family_name": "Ford",
"given_name": "Eric B.",
"orcid": "0000-0001-6545-639X"
},
{
"family_name": "Fujieh",
"given_name": "Maura"
},
{
"family_name": "Gautier",
"given_name": "Thomas N., III",
"orcid": "0000-0002-9794-5056"
},
{
"family_name": "Geary",
"given_name": "John C.",
"orcid": "0000-0003-3630-3735"
},
{
"family_name": "Gilliland",
"given_name": "Ronald L.",
"orcid": "0000-0002-1554-5578"
},
{
"family_name": "Girouard",
"given_name": "Forrest R."
},
{
"family_name": "Gould",
"given_name": "Alan"
},
{
"family_name": "Haas",
"given_name": "Michael R.",
"orcid": "0000-0003-2397-0045"
},
{
"family_name": "Henze",
"given_name": "Christopher E."
},
{
"family_name": "Holman",
"given_name": "Matthew J.",
"orcid": "0000-0002-1139-4880"
},
{
"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": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488"
},
{
"family_name": "Hunter",
"given_name": "Roger C."
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Kjeldsen",
"given_name": "Hans",
"orcid": "0000-0002-9037-0018"
},
{
"family_name": "Kolodziejczak",
"given_name": "Jeffery"
},
{
"family_name": "Larson",
"given_name": "Kipp"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Li",
"given_name": "Jie",
"orcid": "0000-0002-3733-4587"
},
{
"family_name": "Meibom",
"given_name": "Soren"
},
{
"family_name": "Middour",
"given_name": "Chris"
},
{
"family_name": "Morris",
"given_name": "Robert L.",
"orcid": "0000-0001-9303-3204"
},
{
"family_name": "Morton",
"given_name": "Timothy D.",
"orcid": "0000-0002-8537-5711"
},
{
"family_name": "Mullally",
"given_name": "Fergal"
},
{
"family_name": "Mullally",
"given_name": "Susan E.",
"orcid": "0000-0001-7106-4683"
},
{
"family_name": "Pletcher",
"given_name": "David",
"orcid": "0000-0001-7691-2194"
},
{
"family_name": "Pr\u0161a",
"given_name": "Andrej",
"orcid": "0000-0002-1913-0281"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Quintana",
"given_name": "Elisa V.",
"orcid": "0000-0003-1309-2904"
},
{
"family_name": "Ragozzine",
"given_name": "Darin",
"orcid": "0000-0003-1080-9770"
},
{
"family_name": "Ramirez",
"given_name": "Solange V."
},
{
"family_name": "Sanderfer",
"given_name": "Dwight T."
},
{
"family_name": "Sasselov",
"given_name": "Dimitar",
"orcid": "0000-0001-7014-1771"
},
{
"family_name": "Seader",
"given_name": "Shawn E.",
"orcid": "0000-0002-6905-7676"
},
{
"family_name": "Shabram",
"given_name": "Megan",
"orcid": "0000-0003-1179-3125"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120"
},
{
"family_name": "Smith",
"given_name": "Jeffrey C.",
"orcid": "0000-0002-6148-7903"
},
{
"family_name": "Still",
"given_name": "Martin"
},
{
"family_name": "Torres",
"given_name": "Guillermo",
"orcid": "0000-0002-5286-0251"
},
{
"family_name": "Troeltzsch",
"given_name": "John"
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Uddin",
"given_name": "Akm Kamal"
},
{
"family_name": "Van Cleve",
"given_name": "Jeffrey E.",
"orcid": "0000-0002-4534-3969"
},
{
"family_name": "Voss",
"given_name": "Janice"
},
{
"family_name": "Weiss",
"given_name": "Lauren",
"orcid": "0000-0002-3725-3058"
},
{
"family_name": "Welsh",
"given_name": "William F.",
"orcid": "0000-0003-2381-5301"
},
{
"family_name": "Wohler",
"given_name": "Bill",
"orcid": "0000-0002-5402-9613"
},
{
"family_name": "Zamudio",
"given_name": "Khadeejah A."
}
],
"abstract": "We present the occurrence rates for rocky planets in the habitable zones (HZs) of main-sequence dwarf stars based on the Kepler DR25 planet candidate catalog and Gaia-based stellar properties. We provide the first analysis in terms of star-dependent instellation flux, which allows us to track HZ planets. We define \u03b7\u2295 as the HZ occurrence of planets with radii between 0.5 and 1.5 R\u2295 orbiting stars with effective temperatures between 4800 and 6300 K. We find that \u03b7\u2295 for the conservative HZ is between 0.37^(+0.48)_(\u22120.21) (errors reflect 68% credible intervals) and 0.60^(+0.90)_(\u22120.36) planets per star, while the optimistic HZ occurrence is between 0.58^(+0.73)_(\u22120.33) and 0.88^(+1.28)_(\u22120.51) planets per star. These bounds reflect two extreme assumptions about the extrapolation of completeness beyond orbital periods where DR25 completeness data are available. The large uncertainties are due to the small number of detected small HZ planets. We find similar occurrence rates between using Poisson likelihood Bayesian analysis and using Approximate Bayesian Computation. Our results are corrected for catalog completeness and reliability. Both completeness and the planet occurrence rate are dependent on stellar effective temperature. We also present occurrence rates for various stellar populations and planet size ranges. We estimate with 95% confidence that, on average, the nearest HZ planet around G and K dwarfs is ~6 pc away and there are ~4 HZ rocky planets around G and K dwarfs within 10 pc of the Sun.",
"doi": "10.3847/1538-3881/abc418",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-01",
"series_number": "1",
"volume": "161",
"issue": "1",
"pages": "Art. No. 36"
},
{
"id": "authors:8wdwv-tc921",
"collection": "authors",
"collection_id": "8wdwv-tc921",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20210107-105301355",
"type": "article",
"title": "TOI 122b and TOI 237b: Two Small Warm Planets Orbiting Inactive M Dwarfs Found by TESS",
"author": [
{
"family_name": "Waalkes",
"given_name": "William C.",
"orcid": "0000-0002-8961-0352",
"clpid": "Waalkes-William-C"
},
{
"family_name": "Berta-Thompson",
"given_name": "Zachory K.",
"orcid": "0000-0002-3321-4924"
},
{
"family_name": "Collins",
"given_name": "Karen A.",
"orcid": "0000-0001-6588-9574"
},
{
"family_name": "Feinstein",
"given_name": "Adina D.",
"orcid": "0000-0002-9464-8101"
},
{
"family_name": "Tofflemire",
"given_name": "Benjamin M.",
"orcid": "0000-0003-2053-0749"
},
{
"family_name": "Rojas-Ayala",
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{
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{
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{
"family_name": "Relles",
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{
"family_name": "Libby-Roberts",
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],
"abstract": "We report the discovery and validation of TOI 122b and TOI 237b, two warm planets transiting inactive M dwarfs observed by the Transiting Exoplanet Survey Satellite (TESS). Our analysis shows that TOI 122b has a radius of 2.72 \u00b1 0.18 R_\u2295 and receives 8.8 \u00b1 1.0 times Earth's bolometric insolation, and TOI 237b has a radius of 1.44\u00b10.12 R_\u2295 and receives 3.7 \u00b1 0.5 times Earth's insolation, straddling the 6.7 \u00d7 Earth insolation that Mercury receives from the Sun. This makes these two of the cooler planets yet discovered by TESS, even on their 5.08 and 5.43 day orbits. Together, they span the small-planet radius valley, providing useful laboratories for exploring volatile evolution around M dwarfs. Their relatively nearby distances (62.23 \u00b1 0.21 pc and 38.11 \u00b1 0.23 pc, respectively) make them potentially feasible targets for future radial velocity follow-up and atmospheric characterization, although such observations may require substantial investments of time on large telescopes.",
"doi": "10.3847/1538-3881/abc3b9",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2021-01",
"series_number": "1",
"volume": "161",
"issue": "1",
"pages": "Art. No. 13"
},
{
"id": "authors:mvg0h-78010",
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"collection_id": "mvg0h-78010",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20201204-110358079",
"type": "article",
"title": "A Closer Look at Exoplanet Occurrence Rates: Considering the Multiplicity of Stars without Detected Planets",
"author": [
{
"family_name": "Savel",
"given_name": "Arjun B.",
"orcid": "0000-0002-2454-768X",
"clpid": "Savel-Arjun-B"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233",
"clpid": "Dressing-Courtney-D"
},
{
"family_name": "Hirsch",
"given_name": "Lea A.",
"orcid": "0000-0001-8058-7443",
"clpid": "Hirsch-Lea-A"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Fleming",
"given_name": "Jordan P. C.",
"orcid": "0000-0003-4625-9387",
"clpid": "Fleming-Jordan-P-C"
},
{
"family_name": "Giacalone",
"given_name": "Steven A.",
"orcid": "0000-0002-8965-3969",
"clpid": "Giacalone-Steven-A"
},
{
"family_name": "Mayo",
"given_name": "Andrew W.",
"orcid": "0000-0002-7216-2135",
"clpid": "Mayo-Andrew-W"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
}
],
"abstract": "One core goal of the Kepler mission was to determine the frequency of Earth-like planets that orbit Sun-like stars. Accurately estimating this planet occurrence rate requires both a well-vetted list of planets and a clear understanding of the stars searched for planets. Previous ground-based follow-up observations have, through a variety of methods, sought to improve our knowledge of stars that are known to host planets. Kepler targets without detected planets, however, have not been subjected to the same intensity of follow-up observations. In this paper, we constrain better the stellar multiplicity for stars around which Kepler could have theoretically detected a transiting Earth-sized planet in the habitable zone. We subsequently aim to improve estimates of the exoplanet search completeness\u2014the fraction of exoplanets that were detected by Kepler\u2014with our analysis. By obtaining adaptive optics observations of 71 Kepler target stars from the Shane 3 m telescope at Lick Observatory, we detected 14 candidate stellar companions within 4'' of 13 target stars. Of these 14 candidate stellar companions, we determine through multiple independent methods that 3 are likely to be bound to their corresponding target star. We then assess the impact of our observations on exoplanet occurrence rate calculations, finding an increase in occurrence of 6% (0.9\u03c3) for various estimates of the frequency of Earth-like planets and an increase of 26% (4.5\u03c3) for super-Earths and sub-Neptunes. These occurrence increases are not entirely commensurate with theoretical predictions, though this discrepancy may be due to differences in the treatment of stellar binarity.",
"doi": "10.3847/1538-3881/abc47d",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2020-12",
"series_number": "6",
"volume": "160",
"issue": "6",
"pages": "Art. No. 287"
},
{
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"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.",
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"clpid": "Dreizler-Stefan"
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{
"family_name": "Crossfield",
"given_name": "I. J. M.",
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},
{
"family_name": "Kossakowski",
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"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"
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{
"family_name": "Espinoza",
"given_name": "N.",
"orcid": "0000-0001-9513-1449"
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{
"family_name": "Pall\u00e9",
"given_name": "E.",
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{
"family_name": "Stassun",
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"orcid": "0000-0002-3481-9052"
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{
"family_name": "Matthews",
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{
"family_name": "Cale",
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{
"family_name": "Caballero",
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{
"family_name": "Schlecker",
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{
"family_name": "Lillo-Box",
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{
"family_name": "Zechmeister",
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{
"family_name": "Lalitha",
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{
"family_name": "Reiners",
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{
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{
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{
"family_name": "Zapatero Osorio",
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{
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{
"family_name": "Hatzes",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"family_name": "Nowak",
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{
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{
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{
"family_name": "Passegger",
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{
"family_name": "Pollacco",
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
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{
"family_name": "Villasenor",
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{
"family_name": "Wang",
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{
"family_name": "Weiss",
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{
"family_name": "Wittrock",
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{
"family_name": "Y\u0131lmaz",
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{
"family_name": "Zohrabi",
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}
],
"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:ehp9j-95112",
"collection": "authors",
"collection_id": "ehp9j-95112",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20201009-144454033",
"type": "article",
"title": "An ultrahot Neptune in the Neptune desert",
"author": [
{
"family_name": "Jenkins",
"given_name": "James S.",
"orcid": "0000-0003-2733-8725",
"clpid": "Jenkins-James-S"
},
{
"family_name": "D\u00edaz",
"given_name": "Mat\u00edas R.",
"orcid": "0000-0002-2100-3257"
},
{
"family_name": "Kurtovic",
"given_name": "Nicol\u00e1s T."
},
{
"family_name": "Espinoza",
"given_name": "N\u00e9stor",
"orcid": "0000-0001-9513-1449"
},
{
"family_name": "Vines",
"given_name": "Jose I.",
"orcid": "0000-0002-1896-2377"
},
{
"family_name": "Pe\u00f1a Rojas",
"given_name": "Pablo A.",
"orcid": "0000-0002-8770-4398"
},
{
"family_name": "Brahm",
"given_name": "Rafael",
"orcid": "0000-0002-9158-7315"
},
{
"family_name": "Torres",
"given_name": "Pascal"
},
{
"family_name": "Cort\u00e9s-Zuleta",
"given_name": "P\u00eda",
"orcid": "0000-0002-6174-4666"
},
{
"family_name": "Soto",
"given_name": "Maritza G.",
"orcid": "0000-0001-9743-5649"
},
{
"family_name": "Lopez",
"given_name": "Eric D."
},
{
"family_name": "King",
"given_name": "George W.",
"orcid": "0000-0002-3641-6636"
},
{
"family_name": "Wheatley",
"given_name": "Peter J.",
"orcid": "0000-0003-1452-2240"
},
{
"family_name": "Winn",
"given_name": "Joshua N.",
"orcid": "0000-0002-4265-047X"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"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": "Sara",
"orcid": "0000-0002-6892-6948"
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Beichman",
"given_name": "Charles A.",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Bieryla",
"given_name": "Allyson",
"orcid": "0000-0001-6637-5401"
},
{
"family_name": "Burke",
"given_name": "Christopher J.",
"orcid": "0000-0002-7754-9486"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Henze",
"given_name": "Christopher E."
},
{
"family_name": "Klaus",
"given_name": "Todd C."
},
{
"family_name": "McCauliff",
"given_name": "Sean",
"orcid": "0000-0002-3037-9395"
},
{
"family_name": "Mori",
"given_name": "Mayuko",
"orcid": "0000-0003-1368-6593"
},
{
"family_name": "Narita",
"given_name": "Norio",
"orcid": "0000-0001-8511-2981"
},
{
"family_name": "Nishiumi",
"given_name": "Taku",
"orcid": "0000-0003-1510-8981"
},
{
"family_name": "Tamura",
"given_name": "Motohide",
"orcid": "0000-0002-6510-0681"
},
{
"family_name": "Pitogo de Leon",
"given_name": "Jerome"
},
{
"family_name": "Quinn",
"given_name": "Samuel N.",
"orcid": "0000-0002-8964-8377"
},
{
"family_name": "Villase\u00f1or",
"given_name": "Jesus Noel"
},
{
"family_name": "Vezie",
"given_name": "Michael"
},
{
"family_name": "Lissauer",
"given_name": "Jack J.",
"orcid": "0000-0001-6513-1659"
},
{
"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": "Isopi",
"given_name": "Giovanni",
"orcid": "0000-0002-8458-0588"
},
{
"family_name": "Mallia",
"given_name": "Franco"
},
{
"family_name": "Ercolino",
"given_name": "Andrea",
"orcid": "0000-0002-2807-5253"
},
{
"family_name": "Petrovich",
"given_name": "Cristobal",
"orcid": "0000-0003-0412-9314"
},
{
"family_name": "Jord\u00e1n",
"given_name": "Andr\u00e9s",
"orcid": "0000-0002-5389-3944"
},
{
"family_name": "Acton",
"given_name": "Jack S.",
"orcid": "0000-0002-1860-7842"
},
{
"family_name": "Armstrong",
"given_name": "David J.",
"orcid": "0000-0002-5080-4117"
},
{
"family_name": "Bayliss",
"given_name": "Daniel",
"orcid": "0000-0001-6023-1335"
},
{
"family_name": "Bouchy",
"given_name": "Fran\u00e7ois",
"orcid": "0000-0002-7613-393X"
},
{
"family_name": "Belardi",
"given_name": "Claudia"
},
{
"family_name": "Bryant",
"given_name": "Edward M."
},
{
"family_name": "Burleigh",
"given_name": "Matthew R.",
"orcid": "0000-0003-0684-7803"
},
{
"family_name": "Cabrera",
"given_name": "Juan",
"orcid": "0000-0001-6653-5487"
},
{
"family_name": "Casewell",
"given_name": "Sarah L.",
"orcid": "0000-0003-2478-0120"
},
{
"family_name": "Chaushev",
"given_name": "Alexander"
},
{
"family_name": "Cooke",
"given_name": "Benjamin F."
},
{
"family_name": "Eigm\u00fcller",
"given_name": "Philipp",
"orcid": "0000-0003-4096-0594"
},
{
"family_name": "Erikson",
"given_name": "Anders"
},
{
"family_name": "Foxell",
"given_name": "Emma"
},
{
"family_name": "G\u00e4nsicke",
"given_name": "Boris T.",
"orcid": "0000-0002-2761-3005"
},
{
"family_name": "Gill",
"given_name": "Samuel",
"orcid": "0000-0002-4259-0155"
},
{
"family_name": "Gillen",
"given_name": "Edward",
"orcid": "0000-0003-2851-3070"
},
{
"family_name": "G\u00fcnther",
"given_name": "Maximilian N.",
"orcid": "0000-0002-3164-9086"
},
{
"family_name": "Goad",
"given_name": "Michael R.",
"orcid": "0000-0002-2908-7360"
},
{
"family_name": "Hooton",
"given_name": "Matthew J.",
"orcid": "0000-0003-0030-332X"
},
{
"family_name": "Jackman",
"given_name": "James A. G.",
"orcid": "0000-0003-0711-7992"
},
{
"family_name": "Louden",
"given_name": "Tom",
"orcid": "0000-0002-2574-356X"
},
{
"family_name": "McCormac",
"given_name": "James",
"orcid": "0000-0003-1631-4170"
},
{
"family_name": "Moyano",
"given_name": "Maximiliano",
"orcid": "0000-0002-7927-9555"
},
{
"family_name": "Nielsen",
"given_name": "Louise D.",
"orcid": "0000-0002-0091-9362"
},
{
"family_name": "Pollacco",
"given_name": "Don",
"orcid": "0000-0001-9850-9697"
},
{
"family_name": "Queloz",
"given_name": "Didier",
"orcid": "0000-0002-3012-0316"
},
{
"family_name": "Rauer",
"given_name": "Heike"
},
{
"family_name": "Raynard",
"given_name": "Liam",
"orcid": "0000-0001-6472-9122"
},
{
"family_name": "Smith",
"given_name": "Alexis M. S.",
"orcid": "0000-0002-2386-4341"
},
{
"family_name": "Tilbrook",
"given_name": "Rosanna H."
},
{
"family_name": "Titz-Weider",
"given_name": "Ruth"
},
{
"family_name": "Turner",
"given_name": "Oliver"
},
{
"family_name": "Udry",
"given_name": "St\u00e9phane",
"orcid": "0000-0001-7576-6236"
},
{
"family_name": "Walker",
"given_name": "Simon R."
},
{
"family_name": "Watson",
"given_name": "Christopher A.",
"orcid": "0000-0002-9718-3266"
},
{
"family_name": "West",
"given_name": "Richard G.",
"orcid": "0000-0001-6604-5533"
},
{
"family_name": "Palle",
"given_name": "Enric",
"orcid": "0000-0003-0987-1593"
},
{
"family_name": "Ziegler",
"given_name": "Carl",
"orcid": "0000-0002-0619-7639"
},
{
"family_name": "Law",
"given_name": "Nicholas",
"orcid": "0000-0001-9380-6457"
},
{
"family_name": "Mann",
"given_name": "Andrew W.",
"orcid": "0000-0003-3654-1602"
}
],
"abstract": "About 1 out of 200 Sun-like stars has a planet with an orbital period shorter than one day: an ultrashort-period planet. All of the previously known ultrashort-period planets are either hot Jupiters, with sizes above 10 Earth radii (R\u2295), or apparently rocky planets smaller than 2\u2009R\u2295. Such lack of planets of intermediate size (the 'hot Neptune desert') has been interpreted as the inability of low-mass planets to retain any hydrogen/helium (H/He) envelope in the face of strong stellar irradiation. Here we report the discovery of an ultrashort-period planet with a radius of 4.6\u2009R\u2295 and a mass of 29\u2009M\u2295, firmly in the hot Neptune desert. Data from the Transiting Exoplanet Survey Satellite revealed transits of the bright Sun-like star LTT 9779 every 0.79\u2009days. The planet's mean density is similar to that of Neptune, and according to thermal evolution models, it has a H/He-rich envelope constituting 9.0^(+2.7)_(\u22122.9)% of the total mass. With an equilibrium temperature around 2,000\u2009K, it is unclear how this 'ultrahot Neptune' managed to retain such an envelope. Follow-up observations of the planet's atmosphere to better understand its origin and physical nature will be facilitated by the star's brightness (V_(mag)\u2009=\u20099.8).",
"doi": "10.1038/s41550-020-1142-z",
"issn": "2397-3366",
"publisher": "Nature Publishing Group",
"publication": "Nature Astronomy",
"publication_date": "2020-12",
"series_number": "12",
"volume": "4",
"issue": "12",
"pages": "1148-1157"
},
{
"id": "authors:w9jk8-wcd34",
"collection": "authors",
"collection_id": "w9jk8-wcd34",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190815-132553119",
"type": "article",
"title": "eleanor: An Open-source Tool for Extracting Light Curves from the TESS Full-frame Images",
"author": [
{
"family_name": "Feinstein",
"given_name": "Adina D.",
"orcid": "0000-0002-9464-8101",
"clpid": "Feinstein-Adina-D"
},
{
"family_name": "Montet",
"given_name": "Benjamin T.",
"orcid": "0000-0001-7516-8308",
"clpid": "Montet-Benjamin-T"
},
{
"family_name": "Foreman-Mackey",
"given_name": "Daniel",
"orcid": "0000-0002-9328-5652",
"clpid": "Foreman-Mackey-Daniel"
},
{
"family_name": "Bedell",
"given_name": "Megan E.",
"orcid": "0000-0001-9907-7742",
"clpid": "Bedell-Megan-E"
},
{
"family_name": "Saunders",
"given_name": "Nicholas",
"orcid": "0000-0003-2657-3889",
"clpid": "Saunders-Nicholas"
},
{
"family_name": "Bean",
"given_name": "Jacob L.",
"orcid": "0000-0003-4733-6532",
"clpid": "Bean-Jacob-L"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Hedges",
"given_name": "Christina",
"orcid": "0000-0002-3385-8391",
"clpid": "Hedges-Christina-L"
},
{
"family_name": "Luger",
"given_name": "Rodrigo",
"orcid": "0000-0002-0296-3826",
"clpid": "Luger-Rodrigo"
},
{
"family_name": "Scolnic",
"given_name": "Daniel",
"orcid": "0000-0002-4934-5849",
"clpid": "Scolnic-Daniel"
},
{
"family_name": "de Miranda Cardoso",
"given_name": "Jos\u00e9 Vin\u00edcius",
"orcid": "0000-0001-5410-5551",
"clpid": "de-Miranda-Cardoso-Jos\u00e9-Vin\u00edcius"
}
],
"abstract": "During its two-year prime mission, the Transiting Exoplanet Survey Satellite (TESS) will perform a time-series photometric survey covering over 80% of the sky. This survey comprises observations of 26 24\u00b0 \u00d7 96\u00b0 sectors that are each monitored continuously for approximately 27 days. The main goal of TESS is to find transiting planets around 200,000 pre-selected stars for which fixed aperture photometry is recorded every two minutes. However, TESS is also recording and delivering full-frame images (FFIs) of each detector at a 30-minutes cadence. We have created an open-source tool, eleanor, to produce light curves for objects in the TESS FFIs. Here, we describe the methods used in eleanor to produce light curves that are optimized for planet searches. The tool performs background subtraction; aperture and point-spread function photometry; decorrelation of instrument systematics; and cotrending using principal component analysis. We recover known transiting exoplanets in the FFIs to validate the pipeline and perform a limited search for new planet candidates in Sector 1. Our tests indicate that eleanor produces light curves with significantly less scatter than other tools that have been used in the literature. Cadence-stacked images, and raw and detrended eleanor light curves for each analyzed star will be hosted on Mikulski Archive for Space Telescopes, with planet candidates on ExoFOP-TESS as Community TESS Objects of Interest. This work confirms the promise that the TESS FFIs will enable the detection of thousands of new exoplanets and a broad range of time domain astrophysics.",
"doi": "10.1088/1538-3873/ab291c",
"issn": "0004-6280",
"publisher": "Astronomical Society of the Pacific",
"publication": "Publications of the Astronomical Society of the Pacific",
"publication_date": "2019-09",
"series_number": "1003",
"volume": "131",
"issue": "1003",
"pages": "Art. No. 094502"
},
{
"id": "authors:2wwsg-mhx96",
"collection": "authors",
"collection_id": "2wwsg-mhx96",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190731-104952376",
"type": "article",
"title": "Characterizing K2 Candidate Planetary Systems Orbiting Low-mass Stars. IV. Updated Properties for 86 Cool Dwarfs Observed during Campaigns 1\u201317",
"author": [
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233",
"clpid": "Dressing-Courtney-D"
},
{
"family_name": "Hardegree-Ullman",
"given_name": "Kevin",
"orcid": "0000-0003-3702-0382",
"clpid": "Hardegree-Ullman-Kevin-K"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062",
"clpid": "Schlieder-Joshua-E"
},
{
"family_name": "Newton",
"given_name": "Elisabeth R.",
"orcid": "0000-0003-4150-841X",
"clpid": "Newton-Elisabeth-R"
},
{
"family_name": "Vanderburg",
"given_name": "Andrew",
"orcid": "0000-0001-7246-5438",
"clpid": "Vanderburg-Andrew"
},
{
"family_name": "Feinstein",
"given_name": "Adina D.",
"orcid": "0000-0002-9464-8101",
"clpid": "Feinstein-Adina-D"
},
{
"family_name": "Duvvuri",
"given_name": "Girish M.",
"orcid": "0000-0002-7119-2543",
"clpid": "Duvvuri-Girish-M"
},
{
"family_name": "Arnold",
"given_name": "Lauren",
"clpid": "Arnold-Lauren"
},
{
"family_name": "Bristow",
"given_name": "Makennah",
"clpid": "Bristow-Makennah"
},
{
"family_name": "Thackeray",
"given_name": "Beverly",
"clpid": "Thackeray-Beverly"
},
{
"family_name": "Abrahams",
"given_name": "Ellianna Schwab",
"orcid": "0000-0002-9879-1183",
"clpid": "Abrahams-Ellianna-S"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Yu",
"given_name": "Liang",
"orcid": "0000-0003-1667-5427",
"clpid": "Yu-Liang"
},
{
"family_name": "Martinez",
"given_name": "Arturo O.",
"orcid": "0000-0002-3311-4085",
"clpid": "Martinez-Arturo-O"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Crepp",
"given_name": "Justin R.",
"orcid": "0000-0003-0800-0593",
"clpid": "Crepp-Justin-R"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
}
],
"abstract": "We present revised stellar properties for 172 K2 target stars that were identified as possible hosts of transiting planets during Campaigns 1\u201317. Using medium-resolution near-infrared spectra acquired with the NASA Infrared Telescope Facility/SpeX and Palomar/TripleSpec, we found that 86 of our targets were bona fide cool dwarfs, 74 were hotter dwarfs, and 12 were giants. Combining our spectroscopic metallicities with Gaia parallaxes and archival photometry, we derived photometric stellar parameters and compared them to our spectroscopic estimates. Although our spectroscopic and photometric radius and temperature estimates are consistent, our photometric mass estimates are systematically \u0394M\u2605 = 0.11 M\u2299 (34%) higher than our spectroscopic mass estimates for the least massive stars (M\u2605(phot) < 0.4 M\u2299). Adopting the photometric parameters and comparing our results to parameters reported in the Ecliptic Plane Input Catalog, our revised stellar radii are \u0394R\u2605 = 0.15 R\u2299 (40%) larger, and our revised stellar effective temperatures are roughly \u0394T_(eff) = 65 K cooler. Correctly determining the properties of K2 target stars is essential for characterizing any associated planet candidates, estimating the planet search sensitivity, and calculating planet occurrence rates. Even though Gaia parallaxes have increased the power of photometric surveys, spectroscopic characterization remains essential for determining stellar metallicities and investigating correlations between stellar metallicity and planetary properties.",
"doi": "10.3847/1538-3881/ab2895",
"pmcid": "PMC8793203",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2019-08",
"series_number": "2",
"volume": "158",
"issue": "2",
"pages": "Art. No. 87"
},
{
"id": "authors:ayvv9-j3w55",
"collection": "authors",
"collection_id": "ayvv9-j3w55",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20190108-084753206",
"type": "article",
"title": "K2-288Bb: A Small Temperate Planet in a Low-mass Binary System Discovered by Citizen Scientists",
"author": [
{
"family_name": "Feinstein",
"given_name": "Adina D.",
"orcid": "0000-0002-9464-8101",
"clpid": "Feinstein-Adina-D"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062",
"clpid": "Schlieder-Joshua-E"
},
{
"family_name": "Livingston",
"given_name": "John H.",
"orcid": "0000-0002-4881-3620",
"clpid": "Livingston-John-H"
},
{
"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": "Arnold",
"given_name": "Lauren",
"clpid": "Arnold-Lauren"
},
{
"family_name": "Barentsen",
"given_name": "Geert",
"orcid": "0000-0002-3306-3484",
"clpid": "Barentsen-Geert"
},
{
"family_name": "Bristow",
"given_name": "Makennah",
"clpid": "Bristow-Makennah"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Dressing",
"given_name": "Courtney D.",
"orcid": "0000-0001-8189-0233",
"clpid": "Dressing-Courtney-D"
},
{
"family_name": "Gonzales",
"given_name": "Erica J.",
"orcid": "0000-0002-9329-2190",
"clpid": "Gonzales-Erica-J"
},
{
"family_name": "Kosiarek",
"given_name": "Molly",
"orcid": "0000-0002-6115-4359",
"clpid": "Kosiarek-Molly-R"
},
{
"family_name": "Lintott",
"given_name": "Chris J.",
"orcid": "0000-0001-5578-359X",
"clpid": "Lintott-Christopher-J"
},
{
"family_name": "Miller",
"given_name": "Grant",
"clpid": "Miller-Grant"
},
{
"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",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Thackeray",
"given_name": "Beverly",
"clpid": "Thackeray-Beverly"
},
{
"family_name": "Ault",
"given_name": "Joanne",
"clpid": "Ault-Joanne"
},
{
"family_name": "Baeten",
"given_name": "Elisabeth",
"orcid": "0000-0003-2556-3152",
"clpid": "Baeten-Elisabeth"
},
{
"family_name": "Jonkeren",
"given_name": "Alexander F.",
"orcid": "0000-0003-3743-3320",
"clpid": "Jonkeren-Alexander-F"
},
{
"family_name": "Langley",
"given_name": "James",
"clpid": "Langley-James"
},
{
"family_name": "Moshinaly",
"given_name": "Houssen",
"clpid": "Moshinaly-Houssen"
},
{
"family_name": "Pearson",
"given_name": "Kirk",
"clpid": "Pearson-Kirk"
},
{
"family_name": "Tanner",
"given_name": "Christopher",
"clpid": "Tanner-Christopher"
},
{
"family_name": "Treasure",
"given_name": "Joanna",
"clpid": "Treasure-Joanna"
}
],
"abstract": "Observations from the Kepler and K2 missions have provided the astronomical community with unprecedented amounts of data to search for transiting exoplanets and other astrophysical phenomena. Here, we present K2-288, a low-mass binary system (M2.0 \u00b1 1.0; M3.0 \u00b1 1.0) hosting a small (R_p = 1.9 R\u2295), temperate (T_(eq) = 226 K) planet observed in K2 Campaign 4. The candidate was first identified by citizen scientists using Exoplanet Explorers hosted on the Zooniverse platform. Follow-up observations and detailed analyses validate the planet and indicate that it likely orbits the secondary star on a 31.39-day period. This orbit places K2-288Bb in or near the habitable zone of its low-mass host star. K2-288Bb resides in a system with a unique architecture, as it orbits at >0.1 au from one component in a moderate separation binary (a_(proj) ~ 55 au), and further follow-up may provide insight into its formation and evolution. Additionally, its estimated size straddles the observed gap in the planet radius distribution. Planets of this size occur less frequently and may be in a transient phase of radius evolution. K2-288 is the third transiting planet system identified by the Exoplanet Explorers program and its discovery exemplifies the value of citizen science in the era of Kepler, K2, and the Transiting Exoplanet Survey Satellite.",
"doi": "10.3847/1538-3881/aafa70",
"issn": "1538-3881",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2019-02",
"series_number": "2",
"volume": "157",
"issue": "2",
"pages": "Art. No. 40"
},
{
"id": "authors:rpqx0-80v55",
"collection": "authors",
"collection_id": "rpqx0-80v55",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20181207-082906305",
"type": "article",
"title": "TESS Discovery of a Transiting Super-Earth in the pi Mensae System",
"author": [
{
"family_name": "Huang",
"given_name": "Chelsea X.",
"orcid": "0000-0003-0918-7484",
"clpid": "Huang-Chelsea-X"
},
{
"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",
"clpid": "Christiansen-Jessie-L"
}
],
"abstract": "We report the detection of a transiting planet around \u03c0 Men (HD 39091), using data from the Transiting Exoplanet Survey Satellite (TESS). The solar-type host star is unusually bright (V = 5.7) and was already known to host a Jovian planet on a highly eccentric, 5.7 yr orbit. The newly discovered planet has a size of 2.04 \u00b1 0.05 R\u2295 and an orbital period of 6.27 days. Radial-velocity data from the High-Accuracy Radial-velocity Planet Searcher and Anglo-Australian Telescope/University College London Echelle Spectrograph archives also displays a 6.27 day periodicity, confirming the existence of the planet and leading to a mass determination of 4.82 \u00b1 0.85 M\u2295. The star's proximity and brightness will facilitate further investigations, such as atmospheric spectroscopy, asteroseismology, the Rossiter\u2013McLaughlin effect, astrometry, and direct imaging.",
"doi": "10.3847/2041-8213/aaef91",
"pmcid": "PMC6662726",
"issn": "2041-8213",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Letters",
"publication_date": "2018-12-01",
"series_number": "2",
"volume": "868",
"issue": "2",
"pages": "Art. No. L39"
},
{
"id": "authors:f5gg4-jzt69",
"collection": "authors",
"collection_id": "f5gg4-jzt69",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20180409-153352280",
"type": "article",
"title": "Planetary Candidates Observed by Kepler. VIII. A Fully Automated Catalog with Measured Completeness and Reliability Based on Data Release 25",
"author": [
{
"family_name": "Thompson",
"given_name": "Susan E.",
"orcid": "0000-0001-7106-4683",
"clpid": "Thompson-Susan-E"
},
{
"family_name": "Coughlin",
"given_name": "Jeffrey L.",
"orcid": "0000-0003-1634-9672"
},
{
"family_name": "Hoffman",
"given_name": "Kelsey",
"orcid": "0000-0001-6541-0754"
},
{
"family_name": "Mullally",
"given_name": "Fergal"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "Burke",
"given_name": "Christopher J.",
"orcid": "0000-0002-7754-9486"
},
{
"family_name": "Bryson",
"given_name": "Steve",
"orcid": "0000-0003-0081-1797"
},
{
"family_name": "Batalha",
"given_name": "Natalie",
"orcid": "0000-0002-7030-9519"
},
{
"family_name": "Haas",
"given_name": "Michael R.",
"orcid": "0000-0003-2397-0045"
},
{
"family_name": "Catanzarite",
"given_name": "Joseph",
"orcid": "0000-0001-7980-4658"
},
{
"family_name": "Rowe",
"given_name": "Jason F.",
"orcid": "0000-0002-5904-1865"
},
{
"family_name": "Barentsen",
"given_name": "Geert",
"orcid": "0000-0002-3306-3484"
},
{
"family_name": "Caldwell",
"given_name": "Douglas A.",
"orcid": "0000-0003-1963-9616"
},
{
"family_name": "Clarke",
"given_name": "Bruce D."
},
{
"family_name": "Jenkins",
"given_name": "Jon M.",
"orcid": "0000-0002-4715-9460"
},
{
"family_name": "Li",
"given_name": "Jie",
"orcid": "0000-0002-3733-4587"
},
{
"family_name": "Latham",
"given_name": "David W.",
"orcid": "0000-0001-9911-7388"
},
{
"family_name": "Lissauer",
"given_name": "Jack J.",
"orcid": "0000-0001-6513-1659"
},
{
"family_name": "Mathur",
"given_name": "Savita",
"orcid": "0000-0002-0129-0316"
},
{
"family_name": "Morris",
"given_name": "Robert L.",
"orcid": "0000-0001-9303-3204"
},
{
"family_name": "Seader",
"given_name": "Shawn E.",
"orcid": "0000-0002-6905-7676"
},
{
"family_name": "Smith",
"given_name": "Jeffrey C.",
"orcid": "0000-0002-6148-7903"
},
{
"family_name": "Klaus",
"given_name": "Todd C."
},
{
"family_name": "Twicken",
"given_name": "Joseph D.",
"orcid": "0000-0002-6778-7552"
},
{
"family_name": "Van Cleve",
"given_name": "Jeffrey E.",
"orcid": "0000-0002-4534-3969"
},
{
"family_name": "Wohler",
"given_name": "Bill",
"orcid": "0000-0002-5402-9613"
},
{
"family_name": "Akeson",
"given_name": "Rachel",
"orcid": "0000-0001-9674-1564",
"clpid": "Akeson-Rachel-L"
},
{
"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": "Henze",
"given_name": "Christopher E."
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853"
},
{
"family_name": "Huber",
"given_name": "Daniel",
"orcid": "0000-0001-8832-4488",
"clpid": "Huber-Daniel"
},
{
"family_name": "Pr\u0161a",
"given_name": "Andrej",
"orcid": "0000-0002-1913-0281"
},
{
"family_name": "Ram\u00edrez",
"given_name": "Solange V.",
"clpid": "Ram\u00edrez-Solange-V"
},
{
"family_name": "Morton",
"given_name": "Timothy D.",
"orcid": "0000-0002-8537-5711"
},
{
"family_name": "Barclay",
"given_name": "Thomas",
"orcid": "0000-0001-7139-2724"
},
{
"family_name": "Campbell",
"given_name": "Jennifer R."
},
{
"family_name": "Chaplin",
"given_name": "William J.",
"orcid": "0000-0002-5714-8618"
},
{
"family_name": "Charbonneau",
"given_name": "David",
"orcid": "0000-0002-9003-484X"
},
{
"family_name": "Christensen-Dalsgaard",
"given_name": "J\u00f8rgen"
},
{
"family_name": "Dotson",
"given_name": "Jessie L.",
"orcid": "0000-0003-4206-5649"
},
{
"family_name": "Doyle",
"given_name": "Laurance"
},
{
"family_name": "Dunham",
"given_name": "Edward W."
},
{
"family_name": "Dupree",
"given_name": "Andrea K.",
"orcid": "0000-0002-8985-8489"
},
{
"family_name": "Ford",
"given_name": "Eric B.",
"orcid": "0000-0001-6545-639X"
},
{
"family_name": "Geary",
"given_name": "John C.",
"orcid": "0000-0003-3630-3735"
},
{
"family_name": "Girouard",
"given_name": "Forrest R."
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073"
},
{
"family_name": "Kjeldsen",
"given_name": "Hans",
"orcid": "0000-0002-9037-0018"
},
{
"family_name": "Quintana",
"given_name": "Elisa V.",
"orcid": "0000-0003-1309-2904"
},
{
"family_name": "Ragozzine",
"given_name": "Darin",
"orcid": "0000-0003-1080-9770"
},
{
"family_name": "Shabram",
"given_name": "Megan",
"orcid": "0000-0003-1179-3125"
},
{
"family_name": "Shporer",
"given_name": "Avi",
"orcid": "0000-0002-1836-3120",
"clpid": "Shporer-Avi"
},
{
"family_name": "Silva Aguirre",
"given_name": "Victor",
"orcid": "0000-0002-6137-903X"
},
{
"family_name": "Still",
"given_name": "Martin"
},
{
"family_name": "Tenenbaum",
"given_name": "Peter",
"orcid": "0000-0002-1949-4720"
},
{
"family_name": "Welsh",
"given_name": "William F.",
"orcid": "0000-0003-2381-5301"
},
{
"family_name": "Wolfgang",
"given_name": "Angie",
"orcid": "0000-0003-2862-6278"
},
{
"family_name": "Zamudio",
"given_name": "Khadeejah A"
},
{
"family_name": "Koch",
"given_name": "David G."
},
{
"family_name": "Borucki",
"given_name": "William J."
}
],
"abstract": "We present the Kepler Object of Interest (KOI) catalog of transiting exoplanets based on searching 4 yr of Kepler time series photometry (Data Release 25, Q1\u2013Q17). The catalog contains 8054 KOIs, of which 4034 are planet candidates with periods between 0.25 and 632 days. Of these candidates, 219 are new, including two in multiplanet systems (KOI-82.06 and KOI-2926.05) and 10 high-reliability, terrestrial-size, habitable zone candidates. This catalog was created using a tool called the Robovetter, which automatically vets the DR25 threshold crossing events (TCEs). The Robovetter also vetted simulated data sets and measured how well it was able to separate TCEs caused by noise from those caused by low signal-to-noise transits. We discuss the Robovetter and the metrics it uses to sort TCEs. For orbital periods less than 100 days the Robovetter completeness (the fraction of simulated transits that are determined to be planet candidates) across all observed stars is greater than 85%. For the same period range, the catalog reliability (the fraction of candidates that are not due to instrumental or stellar noise) is greater than 98%. However, for low signal-to-noise candidates between 200 and 500 days around FGK-dwarf stars, the Robovetter is 76.7% complete and the catalog is 50.5% reliable. The KOI catalog, the transit fits, and all of the simulated data used to characterize this catalog are available at the NASA Exoplanet Archive.",
"doi": "10.3847/1538-4365/aab4f9",
"pmcid": "PMC7477822",
"issn": "1538-4365",
"publisher": "American Astronomical Society",
"publication": "Astrophysical Journal Supplement Series",
"publication_date": "2018-04",
"series_number": "2",
"volume": "235",
"issue": "2",
"pages": "Art. No. 38"
},
{
"id": "authors:cq08d-cwm97",
"collection": "authors",
"collection_id": "cq08d-cwm97",
"cite_using_url": "https://resolver.caltech.edu/CaltechAUTHORS:20161207-100653045",
"type": "article",
"title": "K2 Discovers a Busy Bee: An Unusual Transiting Neptune Found in the Beehive Cluster",
"author": [
{
"family_name": "Obermeier",
"given_name": "Christian",
"clpid": "Obermeier-Christian"
},
{
"family_name": "Henning",
"given_name": "Thomas",
"clpid": "Henning-Thomas"
},
{
"family_name": "Schlieder",
"given_name": "Joshua E.",
"orcid": "0000-0001-5347-7062",
"clpid": "Schlieder-Joshua-E"
},
{
"family_name": "Crossfield",
"given_name": "Ian J. M.",
"orcid": "0000-0002-1835-1891",
"clpid": "Crossfield-Ian-J-M"
},
{
"family_name": "Petigura",
"given_name": "Erik A.",
"orcid": "0000-0003-0967-2893",
"clpid": "Petigura-Erik-A"
},
{
"family_name": "Howard",
"given_name": "Andrew W.",
"orcid": "0000-0001-8638-0320",
"clpid": "Howard-A-W"
},
{
"family_name": "Sinukoff",
"given_name": "Evan",
"orcid": "0000-0002-5658-0601",
"clpid": "Sinukoff-Evan"
},
{
"family_name": "Isaacson",
"given_name": "Howard",
"orcid": "0000-0002-0531-1073",
"clpid": "Isaacson-Howard-T"
},
{
"family_name": "Ciardi",
"given_name": "David R.",
"orcid": "0000-0002-5741-3047",
"clpid": "Ciardi-David-R"
},
{
"family_name": "David",
"given_name": "Trevor J.",
"orcid": "0000-0001-6534-6246",
"clpid": "David-Trevor-J"
},
{
"family_name": "Hillenbrand",
"given_name": "Lynne A.",
"clpid": "Hillenbrand-L-A"
},
{
"family_name": "Beichman",
"given_name": "Charles A.",
"orcid": "0000-0002-5627-5471",
"clpid": "Beichman-Charles-A"
},
{
"family_name": "Howell",
"given_name": "Steve B.",
"orcid": "0000-0002-2532-2853",
"clpid": "Howell-Steve-B"
},
{
"family_name": "Horch",
"given_name": "Elliott",
"orcid": "0000-0003-2159-1463",
"clpid": "Horch-Elliott-P"
},
{
"family_name": "Everett",
"given_name": "Mark",
"orcid": "0000-0002-0885-7215",
"clpid": "Everett-Mark-E"
},
{
"family_name": "Hirsch",
"given_name": "Lea",
"orcid": "0000-0001-8058-7443",
"clpid": "Hirsch-Lea-A"
},
{
"family_name": "Teske",
"given_name": "Johanna",
"clpid": "Teske-Johanna-K"
},
{
"family_name": "Christiansen",
"given_name": "Jessie L.",
"orcid": "0000-0002-8035-4778",
"clpid": "Christiansen-Jessie-L"
},
{
"family_name": "L\u00e9pine",
"given_name": "S\u00e9bastien",
"orcid": "0000-0002-2437-2947",
"clpid": "L\u00e9pine-S\u00e9bastien"
},
{
"family_name": "Aller",
"given_name": "Kimberly M.",
"orcid": "0000-0003-0208-6146",
"clpid": "Aller-Kimberly-M"
},
{
"family_name": "Liu",
"given_name": "Michael C.",
"orcid": "0000-0003-2232-7664",
"clpid": "Liu-Michael-C"
},
{
"family_name": "Saglia",
"given_name": "Roberto P.",
"orcid": "0000-0003-0378-7032",
"clpid": "Saglia-Roberto-P"
},
{
"family_name": "Livingston",
"given_name": "John",
"orcid": "0000-0002-4881-3620",
"clpid": "Livingston-John-H"
},
{
"family_name": "Kluge",
"given_name": "Matthias",
"orcid": "0000-0002-9618-2552",
"clpid": "Kluge-Matthias"
}
],
"abstract": "Open clusters have been the focus of several exoplanet surveys, but only a few planets have so far been discovered. The Kepler spacecraft revealed an abundance of small planets around small cool stars, therefore, such cluster members are prime targets for exoplanet transit searches. Kepler's new mission, K2, is targeting several open clusters and star-forming regions around the ecliptic to search for transiting planets around their low-mass constituents. Here, we report the discovery of the first transiting planet in the intermediate-age (800 Myr) Beehive cluster (Praesepe). K2-95 is a faint (K_p = 15.5 mag) M3.0 \u00b1 0.5 dwarf from K2's Campaign 5 with an effective temperature of 3471 \u00b1 124 K, approximately solar metallicity and a radius of 0.402 \u00b1 0.050 R\u2299. We detected a transiting planet with a radius of 3.47^(+0.78)_(-0.53) R\u2295 and an orbital period of 10.134 days. We combined photometry, medium/high-resolution spectroscopy, adaptive optics/speckle imaging, and archival survey images to rule out any false-positive detection scenarios, validate the planet, and further characterize the system. The planet's radius is very unusual as M-dwarf field stars rarely have Neptune-sized transiting planets. The comparatively large radius of K2-95b is consistent with the other recently discovered cluster planets K2-25b (Hyades) and K2-33b (Upper Scorpius), indicating systematic differences in their evolutionary states or formation. These discoveries from K2 provide a snapshot of planet formation and evolution in cluster environments and thus make excellent laboratories to test differences between field-star and cluster planet populations.",
"doi": "10.3847/1538-3881/152/6/223",
"issn": "0004-6256",
"publisher": "American Astronomical Society",
"publication": "Astronomical Journal",
"publication_date": "2016-12",
"series_number": "6",
"volume": "152",
"issue": "6",
"pages": "Art. No. 223"
}
]