Thursday, October 6, 2016

WASP-92b, WASP-93b and WASP-118b: Three new hot Jupiters


Hay et al


We present the discovery of three new transiting giant planets, first detected with the WASP telescopes, and establish their planetary nature with follow up spectroscopy and ground-based photometric lightcurves. WASP-92 is an F7 star, with a moderately inflated planet orbiting with a period of 2.17 days, which has Rp=1.461±0.077RJ and Mp=0.805±0.068MJ. WASP-93b orbits its F4 host star every 2.73 days and has Rp=1.597±0.077RJ and Mp=1.47±0.029MJ. WASP-118b also has a hot host star (F6) and is moderately inflated, where Rp=1.440±0.036RJ and Mp=0.513±0.041MJ and the planet has an orbital period of 4.05 days. They are bright targets (V = 13.18, 10.97 and 11.07 respectively) ideal for further characterisation work, particularly WASP-118b, which is being observed by K2 as part of campaign 8. WASP-93b is expected to be tidally migrating outwards, which is divergent from the tidal behaviour of the majority of hot Jupiters discovered.

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