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标题：K2-31B, A GRAZING TRANSITING HOT JUPITER ON A 1.26-DAY ORBIT AROUND A BRIGHT G7V STAR
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作者：Sascha Grziwa ; Davide Gandolfi ; Szilard Csizmadia 等
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2016
卷号：152
期号：5
DOI：10.3847/0004-6256/152/5/132
语种：English
出版社：American Institute of Physics
摘要：We report the discovery of K2-31b, the first confirmed transiting hot Jupiter detected by the K2 space mission. We combined K2 photometry with FastCam lucky imaging and FIES and HARPS high-resolution spectroscopy to confirm the planetary nature of the transiting object and derived the system parameters. K2-31b is a 1.8-Jupiter-mass planet on a 1.26-day orbit around a G7 V star ( M ⊙, R ⊙). The planetary radius is poorly constrained (0.7 < R p < 1.4 R Jup),15 owing to the grazing transit and the low sampling rate of the K2 photometry.
关键词：planets and satellites: detection;planets and satellites: individual (EPIC; 204129699; b);stars: fundamental parameters