期刊
ASTRONOMICAL JOURNAL
卷 159, 期 4, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/1538-3881/ab6f67
关键词
Exoplanets; Extrasolar gas giants; Exoplanet astronomy; Transit photometry; Radial velocity; Planet hosting stars
资金
- FONDECYT [1171208]
- Ministry for the Economy, Development, and Tourism's Programa Iniciativa Cientifica Milenio [IC 120009]
- FONDECYT Postdoctoral Fellowship [3180246]
- Millennium Institute of Astrophysics (MAS)
- CONICYT-GEMINI [32180014]
- MIT's Kavli Institute
- Australian Research Council [LE160100001, DP180100972]
- Mount Cuba Astronomical Foundation
- University of Southern Queensland
- UNSW Australia
- MIT
- Nanjing University
- George Mason University
- University of Louisville
- University of California Riverside
- University of Florida
- University of Texas at Austin
- Australian Research Council [LE160100001] Funding Source: Australian Research Council
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 M-p = 1.236(-0.067)(+0.069) 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-star = 1.181 +/- 0.058 M-circle dot, a radius of R. = 1.28(-0.03)(+0.03) R-circle dot, an age of 2.92(-0.73)(+0.80) Gyr and solar metallicity, properties consistent with a main-sequence late-F star with T-eff = 6295 +/- 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.
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