TOI-677b: A Warm Jupiter (P = 11.2 days) on an Eccentric Orbit Transiting a Late F-type Star

April 2020 • 2020AJ....159..145J

Authors • 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

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 ${\text{}}{M}_{{\text{}}p} = ${1.236}_{-0.067}^{+0.069} ${\text{}}{M}_{{\rm{J}}}, a radius of ${\text{}}{R}_{{\text{}}P} = $1.170\pm 0.03 ${\text{}}{R}_{{\rm{J}}}, and orbits its bright host star (V = 9.8 mag) with an orbital period of $11.23660\pm 0.00011 d, on an eccentric orbit with $e=0.435\pm 0.024 . The host star has a mass of ${\text{}}{M}_{\star } = $1.181\pm 0.058 ${\text{}}{M}_{\odot }, a radius of ${\text{}}{R}_{\star } = ${1.28}_{-0.03}^{+0.03} ${\text{}}{R}_{\odot }, an age of ${2.92}_{-0.73}^{+0.80} Gyr and solar metallicity, properties consistent with a main-sequence late-F star with ${T}_{\mathrm{eff}}=6295\pm 77 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.

Links

• PREPRINT http://arxiv.org/abs/1911.05574
• ELECTR https://doi.org/10.3847/1538-3881/ab6f67
• SIMBAD https://simbad.u-strasbg.fr/simbad/sim-ref?querymethod=bib&simbo=on&submit=submit+bibcode&bibcode=2020AJ....159..145J
• PDF https://iopscience.iop.org/article/10.3847/1538-3881/ab6f67/pdf
• DATA http://exoplanetarchive.ipac.caltech.edu/cgi-bin/DisplayOverview/nph-DisplayOverview?type=REFERENCE&bibcode=2020AJ....159..145J
• DATA https://irsa.ipac.caltech.edu/bibdata/2020/J/2020AJ....159..145J.html