期刊
ASTROPHYSICAL JOURNAL
卷 770, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/770/1/52
关键词
binaries: eclipsing; planetary systems; stars: individual (KIC 4862625 Kepler-47); techniques: photometric
资金
- NASA's Science Mission Directorate
- NASA Origins of Solar Systems grant [NNX10AG30G]
- HST DD grant [11945]
- Korea Research Council for Science and Technology (KRCF) through the Young Scientist Research Fellowship Program grant [2012-1-410-02]
- SFI/HEA Irish Centre for High-End Computing (ICHEC)
- NASA [NNX10AG30G, 133625] Funding Source: Federal RePORTER
We report the discovery of a transiting, gas giant circumbinary planet orbiting the eclipsing binary KIC 4862625 and describe our independent discovery of the two transiting planets orbiting Kepler-47. We describe a simple and semi-automated procedure for identifying individual transits in light curves and present our follow-up measurements of the two circumbinary systems. For the KIC 4862625 system, the 0.52 +/- 0.018 R-Jupiter radius planet revolves every similar to 138 days and occults the 1.47 +/- 0.08 M-circle dot, 1.7 +/- 0.06 R-circle dot F8 IV primary star producing aperiodic transits of variable durations commensurate with the configuration of the eclipsing binary star. Our best-fit model indicates the orbit has a semi-major axis of 0.64 AU and is slightly eccentric, e = 0.1. For the Kepler-47 system, we confirm the results of Orosz et al. Modulations in the radial velocity of KIC 4862625A are measured both spectroscopically and photometrically, i.e., via Doppler boosting, and produce similar results.
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