K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star

Grziwa, Sascha and Gandolfi, Davide and Csizmadia, Szilárd and Fridlund, Malcolm and Parviainen, Hannu (2016) K2-31B, a Grazing Transiting Hot Jupiter on a 1.26-day Orbit around a Bright G7V Star. ASTRONOMICAL JOURNAL, 152 (5). ISSN 0004-6256

Preview

Text 1510.09149.pdf Available under License Creative Commons Attribution. Download (4MB) | Preview

Abstract

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 an 1.26-day-orbit around a G7 V star (M? = 0.91 M , R? = 0.78 R ). The planetary radius is poorly constrained (0.7<Rp<1.4 RJup)a, owing to the grazing transit and the low sampling rate of the K2 photometryb.

Actions (login required)

Edit Item