학술논문
HD 202772A b: A Transiting Hot Jupiter around a Bright, Mildly Evolved Star in a Visual Binary Discovered by TESS
Document Type
article
Author
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
Source
The Astronomical Journal. 157(2)
Subject
Language
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.