Warm Jupiters in TESS Full-frame Images: A Catalog and Observed Eccentricity Distribution for Year 1

Dong, Jiayin and Huang, Chelsea X. ORCID: https://orcid.org/0000-0003-0918-7484 and Dawson, Rebekah I. and Foreman-Mackey, Daniel and Collins, Karen A. and Quinn, Samuel N. and Lissauer, Jack J. and Beatty, Thomas and Quarles, Billy and Sha, Lizhou and Shporer, Avi and Guo, Zhao and Kane, Stephen R. and Abe, Lyu and Barkaoui, Khalid and Benkhaldoun, Zouhair and Brahm, Rafael and Bouchy, Francois and Carmichael, Theron W. and Collins, Kevin I. and Conti, Dennis M. and Crouzet, Nicolas and Dransfield, Georgina and Evans, Phil and Gan, Tianjun and Ghachoui, Mourad and Gillon, Michael and Grieves, Nolan and Guillot, Tristan and Hellier, Coel and Jehin, Emmanuel and Jensen, Eric L. N. and Jordan, Andres and Kamler, Jacob and Kielkopf, John F. and Mekarnia, Djamel and Nielsen, Louise D. and Pozuelos, Francisco J. and Radford, Don J. and Schmider, Francois-Xavier and Schwarz, Richard P. and Stockdale, Chris and Tan, Thiam-Guan and Timmermans, Mathilde and Triaud, Amaury H. M. J. and Wang, Gavin and Ricker, George and Vanderspek, Roland and Latham, David W. and Seager, Sara and Winn, Joshua N. and Jenkins, Jon M. and Mireles, Ismael and Yahalomi, Daniel A. and Morgan, Edward H. and Vezie, Michael and Quintana, Elisa V. and Rose, Mark E. and Smith, Jeffrey C. and Shiao, Bernie (2021) Warm Jupiters in TESS Full-frame Images: A Catalog and Observed Eccentricity Distribution for Year 1. The Astrophysical Journal Supplement Series, 255 (1):A8. pp. 1-25. ISSN 0067-0049

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Warm Jupiters-defined here as planets larger than 6 Earth radii with orbital periods of 8-200 days-are a key missing piece in our understanding of how planetary systems form and evolve. It is currently debated whether Warm Jupiters form in situ, undergo disk or high-eccentricity tidal migration, or have a mixture of origin channels. These different classes of origin channels lead to different expectations for Warm Jupiters' properties, which are currently difficult to evaluate due to the small sample size. We take advantage of the Transiting Exoplanet Survey Satellite (TESS) survey and systematically search for Warm Jupiter candidates around main-sequence host stars brighter than the TESS-band magnitude of 12 in the full-frame images in Year 1 of the TESS Prime Mission data. We introduce a catalog of 55 Warm Jupiter candidates, including 19 candidates that were not originally released as TESS objects of interest by the TESS team. We fit their TESS light curves, characterize their eccentricities and transit-timing variations, and prioritize a list for ground-based follow-up and TESS Extended Mission observations. Using hierarchical Bayesian modeling, we find the preliminary eccentricity distributions of our Warm-Jupiter-candidate catalog using a beta distribution, a Rayleigh distribution, and a two-component Gaussian distribution as the functional forms of the eccentricity distribution. Additional follow-up observations will be required to clean the sample of false positives for a full statistical study, derive the orbital solutions to break the eccentricity degeneracy, and provide mass measurements.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version deposited in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 31 Mar 2022 05:15
Last Modified: 17 May 2022 06:19
Uncontrolled Keywords: Exoplanet catalogs (488); Astrophysics - Earth and Planetary Astrophysics
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Identification Number or DOI: https://doi.org/10.3847/1538-4365/abf73c
URI: http://eprints.usq.edu.au/id/eprint/47424

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