HD 202772A b: A Transiting Hot Jupiter around a Bright, Mildly Evolved Star in a Visual Binary Discovered by TESS

Wang, Songhu; Jones, Matias; Shporer, Avi; Fulton, Benjamin J.; Paredes, Leonardo A.; Trifonov, Trifon; Kossakowski, Diana; Eastman, Jason; Redfield, Seth; Günther, Maximilian N.; Kreidberg, Laura; Huang, Chelsea X.; Millholland, Sarah; Seligman, Darryl; Fischer, Debra; Brahm, Rafael; Wang, Xian-Yu; Cruz, Bryndis; Henry, Todd; James, Hodari-Sadiki; Addison, Brett; Liang, En-Si; Davis, Allen B.; Tronsgaard, René; Worku, Keduse; Brewer, John M.; Kürster, Martin; Zhang, Hui; Beichman, Charles A.; Bieryla, Allyson; Brown, Timothy M.; Christiansen, Jessie L.; Ciardi, David R.; Collins, Karen A.; Esquerdo, Gilbert A.; Howard, Andrew W.; Isaacson, Howard; Latham, David W.; Mazeh, Tsevi; Petigura, Erik A.; Quinn, Samuel N.; Shahaf, Sahar; Siverd, Robert J.; Rodler, Florian; Reffert, Sabine; Zakhozhay, Olga; Ricker, George R.; Vanderspek, Roland; Seager, Sara; Winn, Joshua N.; Jenkins, Jon M.; Boyd, Patricia T.; Fűrész, Gábor; Henze, Christopher; Levine, Alen M.; Morris, Robert; Paegert, Martin; Stassun, Keivan G.; Ting, Eric B.; Vezie, Michael; Laughlin, Gregory

Author(s)

Wang, Songhu; Jones, Matias; Shporer, Avi; Fulton, Benjamin J.; Paredes, Leonardo A.; ... Show more

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Abstract

We report the first confirmation of a hot Jupiter discovered by the Transiting Exoplanet Survey Satellite (TESS) mission: HD 202772A b. The transit signal was detected in the data from TESS Sector 1, and was confirmed to be of planetary origin through radial velocity (RV) measurements. HD 202772A b is orbiting a mildly evolved star with a period of 3.3 days. With an apparent magnitude of V = 8.3, the star is among the brightest and most massive known to host a hot Jupiter. Based on the 27 days of TESS photometry and RV data from the CHIRON, HARPS, and Tillinghast Reflector Echelle Spectrograph, the planet has a mass of and radius of , making it an inflated gas giant. HD 202772A b is a rare example of a transiting hot Jupiter around a quickly evolving star. It is also one of the most strongly irradiated hot Jupiters currently known.

Date issued

2019-01

URI

https://hdl.handle.net/1721.1/125171

Department

Massachusetts Institute of Technology. Department of Physics; MIT Kavli Institute for Astrophysics and Space Research

Journal

Astronomical Journal

Publisher

American Astronomical Society / IOP Publishing

Citation

Wang, Songhu et al. "HD 202772A b: A Transiting Hot Jupiter around a Bright, Mildly Evolved Star in a Visual Binary Discovered by TESS." Astronomical Journal 157, 2 (January 2019): 51 © 2019 American Astronomical Society

Version: Final published version

ISSN

1538-3881

Collections

MIT Open Access Articles