An Eccentric Massive Jupiter Orbiting a Subgiant on a 9.5-day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images

Rodriguez, Joseph E. and Quinn, Samuel N. and Huang, Chelsea X. ORCID: and Vanderburg, Andrew and Penev, Kaloyan and Brahm, Rafael and Jordan, Andres and Ikwut-Ukwa, Mma and Tsirulik, Shelly and Latham, David W. and Stassun, Keivan G. and Shporer, Avi and Ziegler, Carl and Matthews, Elisabeth and Eastman, Jason D. and Gaudi, B. Scott and Collins, Karen A. and Guerrero, Natalia and Relles, Howard M. and Barclay, Thomas and Batalha, Natalie M. and Berlind, Perry and Bieryla, Allyson and Bouma, L. G. and Boyd, Patricia T. and Burt, Jennifer and Calkins, Michael L. and Christiansen, Jessie and Ciardi, David R. and Colon, Knicole D. and Conti, Dennis M. and Crossfield, Ian J. M. and Daylan, Tansu and Dittmann, Jason and Dragomir, Diana and Dynes, Scott and Espinoza, Nestor and Esquerdo, Gilbert A. and Essack, Zahra and Soto, Aylin Garcia and Glidden, Ana and Gunther, Maximilian N. and Henning, Thomas and Jenkins, Jon M. and Kielkopf, John F. and Krishnamurthy, Akshata and Law, Nicholas M. and Levine, Alan M. and Lewin, Pablo and Mann, Andrew W. and Morgan, Edward H. and Morris, Robert L. and Oelkers, Ryan J. and Paegert, Martin and Pepper, Joshua and Quintana, Elisa V. and Ricker, George R. and Rowden, Pamela and Seager, Sara and Sarkis, Paula and Schlieder, Joshua E. and Sha, Lizhou and Tokovinin, Andrei and Torres, Guillermo and Vanderspek, Roland K. and Villanueva, Steven, Jr. and Villasenor, Jesus Noel and Winn, Joshua N. and Wohler, Bill and Wong, Ian and Yahalomi, Daniel A. and Yu, Liang and Zhan, Zhuchang and Zhou, George ORCID: (2019) An Eccentric Massive Jupiter Orbiting a Subgiant on a 9.5-day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images. The Astronomical Journal, 157 (5):191. pp. 1-13. ISSN 0004-6256

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We report the discovery of TOI-172 b from the Transiting Exoplanet Survey Satellite (TESS) mission, a massive hot Jupiter transiting a slightly evolved G star with a 9.48-day orbital period. This is the first planet to be confirmed from analysis of only the TESS full frame images, because the host star was not chosen as a two-minute cadence target. From a global analysis of the TESS photometry and follow-up observations carried out by the TESS Follow-up Observing Program Working Group, TOI-172 (TIC 29857954) is a slightly evolved star with an effective temperature of T eff = 5645 ± 50 K, a mass of M ∗ = 1.128-0.061 +0.065 M o, radius of R ∗ = 1.777-0.044 +0.047 R o, a surface gravity of log g ∗ = 3.993-0.028 +0.027, and an age of 7.4-1.5 +1.6. Its planetary companion (TOI-172 b) has a radius of R P = 0.965-0.029 +0.032 R J, a mass of M P = 5.42-0.20 +0.22 M J, and is on an eccentric orbit (e = 0.3806-0.0090 +0.0093 ). TOI-172 b is one of the few known massive giant planets on a highly eccentric short-period orbit. Future study of the atmosphere of this planet and its system architecture offer opportunities to understand the formation and evolution of similar systems.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 09 Feb 2022 03:52
Last Modified: 14 Feb 2022 01:06
Uncontrolled Keywords: planetary systems; planets and satellites: detection; stars: individual (TIC 29857954); Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar and Stellar Astrophysics
Fields of Research (2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280120 Expanding knowledge in the physical sciences
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