Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b, and WASP-90b
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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 1.7–1.8 RJup. All three orbit hot stars, of type F5–F7, with orbits of 1.8–3.9 d, and all three stars have evolved, post-main-sequence radii (1.7–2.2 R⊙). 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.
West , R G , Hellier , C , Almenara , J-M , Anderson , D R , Barros , S C C , Bouchy , F , Brown , D J A , Collier Cameron , A , Deleuil , M , Delrez , L , Doyle , A P , Faedi , F , Fumel , A , Gillon , M , Gómez Maqueo Chew , Y , Hébrard , G , Jehin , E , Lendl , M , Maxted , P F L , Pepe , F , Pollacco , D , Queloz , D , Ségransan , D , Smalley , B , Smith , A M S , Southworth , J , Triaud , A H M J & Udry , S 2016 , ' Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b, and WASP-90b ' Astronomy & Astrophysics , vol 585 , A126 . DOI: 10.1051/0004-6361/201527276
Astronomy & Astrophysics
© ESO, 2016. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at http://dx.doi.org/10.1051/0004-6361/201527276