期刊
ASTRONOMY & ASTROPHYSICS
卷 528, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201015764
关键词
techniques: spectroscopic; techniques: radial velocities; techniques: photometric; planetary systems; stars: individual: KOI-428b
资金
- CNRS/INSU, France
- Swiss National Science Foundation (FNSRS)
- French National Research Agency [ANR-08-JCJC-0102-01]
- Swiss National Science Foundation [PA00P2_126150/1]
- Centre National d'Etudes Spatiales (CNES)
- Swiss National Science Foundation (SNF) [PA00P2_126150] Funding Source: Swiss National Science Foundation (SNF)
- Agence Nationale de la Recherche (ANR) [ANR-08-JCJC-0102] Funding Source: Agence Nationale de la Recherche (ANR)
We report the discovery of a hot Jupiter transiting a subgiant star with an orbital period of 6.87 days. This discovery was aided by public photometric data from the Kepler space mission and new radial velocity observations obtained by the SOPHIE spectrograph. The planet KOI-428b, with a radius of 1.17 +/- 0.04 R(Jup) and a mass of 2.2 +/- 0.4 M(Jup), orbits an F5IV star with R(star) = 2.13 +/- 0.06 R(circle dot), M(star) = 1.48 +/- 0.06 M(circle dot), and T(eff) = 6510 +/- 100 K. The star KOI-428 is the largest and the most evolved star discovered so far with a transiting planet.
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