Two transiting hot Jupiters from the WASP survey: WASP-150b and WASP-176b

Abstract

We report the discovery of two transiting exoplanets from the WASP survey, WASP-150b and WASP-176b. WASP-150b is an eccentric ($e$ = 0.38) hot Jupiter on a 5.6 day orbit around a $V$ = 12.03, F8 main-sequence host. The host star has a mass and radius of 1.4 ${\mathrm{M}}_{\odot }$ and 1.7 ${\mathrm{R}}_{\odot }$ respectively. WASP-150b has a mass and radius of 8.5 ${\mathrm{M}}_{\mathrm{J}}$ and 1.1 ${\mathrm{R}}_{\mathrm{J}}$, leading to a large planetary bulk density of 6.4 $\ddot{\mathrm{I}}{}_{\mathrm{J}}$. WASP-150b is found to be $\sim 3$ Gyr old, well below its circularisation timescale, supporting the eccentric nature of the planet. WASP-176b is a hot Jupiter planet on a 3.9 day orbit around a $V$ = 12.01, F9 sub-giant host. The host star has a mass and radius of 1.3 ${\mathrm{M}}_{\odot }$ and 1.9 ${\mathrm{R}}_{\odot }$. WASP-176b has a mass and radius of 0.86 ${\mathrm{M}}_{\mathrm{J}}$ and 1.5 ${\mathrm{R}}_{\mathrm{J}}$ respectively, leading to a planetary bulk density of 0.23 $\ddot{\mathrm{I}}{}_{\mathrm{J}}$.

15 pages, 14 figures. Accepted for publication in The Astronomical Journal