Three irradiated and bloated hot Jupiters:

Le résumé fourni par la source

We report on three new transiting hot Jupiter planets, discovered from the WASP surveys, which we combine with radial velocities from OHP/SOPHIE and Euler/CORALIE and photometry from Euler and TRAPPIST.The planets WASP-76b, WASP-82b, and WASP-90b are all inflated, with radii of 1.7-1.8R Jup .All three orbit hot stars, of type F5-F7, with orbits of 1.8-3.9d, and all three stars have evolved, post-main-sequence radii (1.7-2.2R ).Thus the three planets fit a known trend of hot Jupiters that receive high levels of irradiation being highly inflated.We caution, though, about the presence of a selection effect, in that non-inflated planets around ∼2 R post-MS stars can often produce transits too shallow to be detected by the ground-based surveys that have found the majority of transiting hot Jupiters.

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