TOI-677b: A Warm Jupiter (P = 11.2 days) on an Eccentric Orbit Transiting a Late F-type Star
Andrés Jordán, Rafael Brahm, Néstor Espinoza, Thomas Henning, Matías I. Jones, Diana Kossakowski, Paula Sarkis, Trifon Trifonov, Felipe Rojas, Pascal Torres, Holger Drass, Sangeetha Nandakumar, Mauro Barbieri, Allen Davis, Songhu Wang, Daniel Bayliss, Luke Bouma, Diana Dragomir, Jason D. Eastman, Tansu Daylan, Natalia Guerrero, Thomas Barclay, Eric B. Ting, Christopher E. Henze, George Ricker, Roland Vanderspek, David W. Latham, Sara Seager, Joshua Winn, Jon M. Jenkins, Robert A. Wittenmyer, Brendan P. Bowler, Ian Crossfield, Jonathan Horner, Stephen R. Kane, John F. Kielkopf, Timothy D. Morton, Peter Plavchan, C. G. Tinney, Brett Addison, Matthew W. Mengel, Jack Okumura, Sahar Shahaf, Tsevi Mazeh, Markus Rabus, Avi Shporer, Carl Ziegler, Andrew W. Mann, Rhodes Hart
Abstract
Abstract We report the discovery of TOI-677 b, first identified as a candidate in light curves obtained within Sectors 9 and 10 of the Transiting Exoplanet Survey Satellite ( TESS ) mission and confirmed with radial velocities. TOI-677 b has a mass of = , a radius of = , and orbits its bright host star ( V = 9.8 mag) with an orbital period of d, on an eccentric orbit with . The host star has a mass of = , a radius of = , an age of Gyr and solar metallicity, properties consistent with a main-sequence late-F star with K. We find evidence in the radial velocity measurements of a secondary long-term signal, which could be due to an outer companion. The TOI-677 b system is a well-suited target for Rossiter–Mclaughlin observations that can constrain migration mechanisms of close-in giant planets.