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arXiv · 1810.02341

HD 202772A B: A Transiting Hot Jupiter Around A Bright, Mildly Evolved Star In A Visual Binary Discovered By Tess

Songhu Wang·Matias Jones·Avi Shporer·Benjamin J. Fulton·Leonardo A. Paredes·Trifon Trifonov·Diana Kossakowski·Jason Eastman·Maximilian N. Gunther·Chelsea X. Huang·Sarah Millholland·Darryl Seligman·Debra Fischer·Rafael Brahm·Xian-Yu Wang·Bryndis Cruz·Hodari-Sadiki James·Brett Addison·Todd Henry·En-Si Liang·Allen B. Davis·Rene Tronsgaard·Keduse Worku·John Brewer·Martin Kurster·Charles A. Beichman·Allyson Bieryla·Timothy M. Brown·Jessie L. Christiansen·David R. Ciardi·Karen A. Collins·Gilbert A. Esquerdo·Andrew W. Howard·Howard Isaacson·David W. Latham·Tsevi Mazeh·Erik A. Petigura·Samuel N. Quinn·Sahar Shahaf·Robert J. Siverd·George R. Ricker·Roland Vanderspek·Sara Seager·Joshua N. Winn·Jon M. Jenkins·Patricia T. Boyd·Gabor Furesz·Christopher Henze·Alen M. Levine·Robert Morris·Martin Paegert·Keivan G. Stassun·Eric B. Ting·Michael Vezie·Gregory Laughlin
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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 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 known to host a hot Jupiter. Based on the 27days of TESS photometry, and radial velocity data from the CHIRON and HARPS spectrographs, the planet has a mass of 1.008+/-0.074 M_J and radius of 1.562+/-0.053 R_J , 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.

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Songhu Wang, Matias Jones, Avi Shporer, Benjamin J. Fulton, Leonardo A. Paredes, Trifon Trifonov, Diana Kossakowski, Jason Eastman, Maximilian N. Gunther, Chelsea X. Huang, Sarah Millholland, Darryl Seligman, Debra Fischer, Rafael Brahm, Xian-Yu Wang, Bryndis Cruz, Hodari-Sadiki James, Brett Addison, Todd Henry, En-Si Liang, Allen B. Davis, Rene Tronsgaard, Keduse Worku, John Brewer, Martin Kurster, Charles A. Beichman, Allyson Bieryla, Timothy M. Brown, Jessie L. Christiansen, David R. Ciardi, Karen A. Collins, Gilbert A. Esquerdo, Andrew W. Howard, Howard Isaacson, David W. Latham, Tsevi Mazeh, Erik A. Petigura, Samuel N. Quinn, Sahar Shahaf, Robert J. Siverd, George R. Ricker, Roland Vanderspek, Sara Seager, Joshua N. Winn, Jon M. Jenkins, Patricia T. Boyd, Gabor Furesz, Christopher Henze, Alen M. Levine, Robert Morris, Martin Paegert, Keivan G. Stassun, Eric B. Ting, Michael Vezie, Gregory Laughlin. 2018-10-04. HD 202772A B: A Transiting Hot Jupiter Around A Bright, Mildly Evolved Star In A Visual Binary Discovered By Tess. https://doi.org/10.3847/1538-3881/aaf1b7

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