Status Report

EPIC 204129699b, a grazing transiting hot Jupiter on an 1.26-day orbit around a bright solar like star

By SpaceRef Editor
November 2, 2015
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EPIC 204129699b, a grazing transiting hot Jupiter on an 1.26-day orbit around a bright solar like star

S. Grziwa, D. Gandolfi, Sz. Csizmadia, M. Fridlund, H. Parviainen, H. J. Deeg, J. Cabrera, A. A. Djupvik, S. Albrecht, E. B. Palle, M. Pätzold, V. J. S. Béjar, J. P. Arranz, P. Eigmüller, A. Erikson, J. P. U. Fynbo, E.W. Guenther, A. P. Hatzes, A. Kiilerich, J. Korth, T. Kuutma, P.Montanés-Rodríguez, D. Nespral, G. Nowak, H. Rauer, J. Saario, D. Sebastian, D. Slumstrup
(Submitted on 30 Oct 2015)

We report the discovery of EPIC 204129699b, 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. EPIC 204129699b is a 1.8-Jupiter-mass planet on an 1.26-day-orbit around a G7V star (M* = 0.91 Msun, R* = 0.78 Rsun). The planetary radius is poorly constrained (0.7 < Rp < 1.4 RJup ), owing to the grazing transit and the low sampling rate of the K2 photometry. The short orbital period and the brightness of the host star (V = 10.8 mag) make the system amenable to atmospheric characterization.

Subjects: Earth and Planetary Astrophysics (astro-ph.EP)
Cite as: arXiv:1510.09149 [astro-ph.EP] (or arXiv:1510.09149v1 [astro-ph.EP] for this version)
Submission history
From: Sascha Grziwa
[v1] Fri, 30 Oct 2015 16:29:34 GMT (3164kb,D)
http://arxiv.org/abs/1510.09149

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