WASP-157b, a Transiting Hot Jupiter Observed with K2

Abstract

We announce the discovery of the transiting hot Jupiter WASP-157b in a 3.95-d orbit around a V = 12.9 G2 main-sequence star. This moderately inflated planet has a Saturn-like density with a mass of $0.57\pm 0.10$ M${}_{\mathrm{Jup}}$ and a radius of $1.06\pm 0.05$ R${}_{\mathrm{Jup}}$. We do not detect any rotational or phase-curve modulations, nor the secondary eclipse, with conservative semi-amplitude upper limits of 250 and 20 ppm, respectively.

6 pages, 5 figures and 4 tables. Accepted for publication in PASP