We report the discovery from K2 of two transiting hot Jupiter systems. K2-295 (observed in Campaign 8) is a K5 dwarf which hosts a planet slightly smaller than Jupiter, orbiting with a period of 4.0 d. We have made an independent discovery of K2-237 b (Campaign 11), which orbits an F6 dwarf every 2.2 d and has an inflated radius 50 - 60 per cent larger than that of Jupiter. We use high-precision radial velocity measurements, obtained using the HARPS and FIES spectrographs, to measure the planetary masses. We find that K2-295 b has a similar mass to Saturn, while K2-237 b is a little more massive than Jupiter.
@article{arxiv.1807.05865,
title = {K2-295 b and K2-237 b: two transiting hot Jupiters},
author = {A. M. S. Smith and Sz. Csizmadia and D. Gandolfi and S. Albrecht and R. Alonso and O. Barragán and J. Cabrera and W. D. Cochran and F. Dai and H. Deeg and Ph. Eigmüller and M. Endl and A. Erikson and M. Fridlund and A. Fukui and S. Grziwa and E. W. Guenther and A. P. Hatzes and D. Hidalgo and T. Hirano and J. Korth and M. Kuzuhara and J. Livingston and N. Narita and D. Nespral and P. Niraula and G. Nowak and E. Palle and M. Pätzold and C. M. Persson and J. Prieto-Arranz and H. Rauer and S. Redfield and I. Ribas and V. Van Eylen},
journal= {arXiv preprint arXiv:1807.05865},
year = {2020}
}
Comments
26 pages, 12 figures, accepted for publication in Acta Astronomica