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Jordán, Andrés; Brahm, Rafael; Espinoza, Néstor; Henning, Thomas; Jones, Matías I.; Kossakowski, Diana; Sarkis, Paula; Trifonov, Trifon; Rojas, Felipe; Torres, Pascal; Drass, Holger; Nandakumar, Sangeetha; Barbieri, Mauro; Davis, Allen; Wang, Songhu; Bayliss, Daniel; Bouma, Luke; Dragomir, Diana; Eastman, Jason D.; Daylan, Tansu; Guerrero, Natalia; Barclay, Thomas; Ting, Eric B; Henze, Christopher E.; Ricker, George; Vanderspek, Roland; Latham, David W.; Seager, Sara; Winn, Joshua; Jenkins, Jon M; Wittenmyer, Robert A.; Bowler, Brendan P.; Crossfield, Ian; Horner, Jonathan; Kane, Stephen R.; Kielkopf, John F.; Morton, Timothy D.; Plavchan, Peter; Tinney, C. G.; Addison, Brett; Mengel, Matthew W.; Okumura, Jack; Shahaf, Sahar; Mazeh, Tsevi; Rabus, Markus; Shporer, Avi; Ziegler, Carl; Mann, Andrew W.; Hart, Rhodes
The Astronomical journal, 04/2020, Letnik: 159, Številka: 4Journal Article
We report the discovery of TOI-677b,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-677b has a mass of M(p) = 1.236(+0.069,- 0.067) M(J), a radius of R(P)=1.170 ± 0.03 R(J), and orbits its bright host star (V = 9.8 mag) with an orbital period of 11.23660 ± 0.00011 d, on an eccentric orbit with e = 0.435 ± 0.024. The host star has a mass of M(*) = 1.181 ± 0.058 M(ʘ), a radius of R(*)= 1.28(+0.03,-0.03) R(ʘ), an age of 2.92 (+0.80,-0.73) Gyr and solar metallicity, properties consistent with a main-sequence late-F star with T(eff)=6295 ± 77K. 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.
