An Eccentric Massive Jupiter Orbiting a Subgiant on a 9.5-day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images
Author(s)
Rodriguez, Joseph E.; Quinn, Samuel N.; Huang, Chelsea X.; Vanderburg, Andrew; Penev, Kaloyan; Brahm, Rafael; Jordán, Andrés; Ikwut-Ukwa, Mma; Tsirulik, Shelly; Latham, David W.; Stassun, Keivan G.; Shporer, Abraham-Avi; Ziegler, Carl; Matthews, Elisabeth C; Eastman, Jason D.; Gaudi, B. Scott; Collins, Karen A.; Guerrero, Natalia M.; Relles, Howard M.; Barclay, Thomas; Batalha, Natalie M.; Berlind, Perry; Bieryla, Allyson; Bouma, L. G.; Boyd, Patricia T.; Burt, Jennifer A; Calkins, Michael L.; Christiansen, Jessie; Ciardi, David R.; Colón, Knicole D.; Conti, Dennis M.; Crossfield, Ian J. M.; Daylan, Tansu; Dittmann, Jason A; Dragomir, Diana; Dynes, Scott Bc; Espinoza, Néstor; Esquerdo, Gilbert A.; Essack, Zahra; Soto, Aylin Garcia; Glidden, Ana; Günther, Maximilian N.; Henning, Thomas; Jenkins, Jon M.; Kielkopf, John F.; Krishnamurthy, Akshata; Law, Nicholas M.; Levine, Alan M; Lewin, Pablo; Mann, Andrew W.; Morgan, Edward H; Morris, Robert L.; Oelkers, Ryan J.; Paegert, Martin; Pepper, Joshua; Quintana, Elisa V.; Ricker, George R; Rowden, Pamela; Seager, Sara; Sarkis, Paula; Schlieder, Joshua E.; Sha, Lizhou; Tokovinin, Andrei; Torres, Guillermo; Vanderspek, Roland K; Villanueva Jr, Steven; Villasenor, Jesus Noel Samonte; Winn, Joshua N.; Wohler, Bill; Wong, Ian; Yahalomi, Daniel A.; Yu, Liang; Zhan, Zhuchang; Zhou, George; ... Show more Show less
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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.
Date issued
2019-04Department
Massachusetts Institute of Technology. Department of Physics; MIT Kavli Institute for Astrophysics and Space ResearchJournal
Astronomical Journal
Publisher
American Astronomical Society
Citation
Rodriguez, Joseph A. et al. "An Eccentric Massive Jupiter Orbiting a Subgiant on a 9.5-day Period Discovered in the Transiting Exoplanet Survey Satellite Full Frame Images." Astronomical Journal 157, 5 (April 2019): 191 © 2019 American Astronomical Society
Version: Final published version
ISSN
1538-3881