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Three irradiated and bloated hot Jupiters: WASP-76b, WASP-82b, and WASP-90b

  • R. G. West
  • , C. Hellier
  • , J.-M. Almenara
  • , D. R. Anderson
  • , S. C. C. Barros
  • , F. Bouchy
  • , D. J. A. Brown
  • , A. Collier Cameron
  • , M. Deleuil
  • , L. Delrez
  • , A. P. Doyle
  • , F. Faedi
  • , A. Fumel
  • , M. Gillon
  • , Y. Gómez Maqueo Chew
  • , G. Hébrard
  • , E. Jehin
  • , M. Lendl
  • , P. F. L. Maxted
  • , F. Pepe
  • D. Pollacco, D. Queloz, D. Ségransan, B. Smalley, A. M. S. Smith, J. Southworth, A. H. M. J. Triaud, S. Udry

Research output: Contribution to journalArticlepeer-review

Abstract

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.
Original languageEnglish
Article numberA126
Number of pages7
JournalAstronomy & Astrophysics
Volume585
DOIs
Publication statusPublished - 8 Jan 2016

Keywords

  • Planetary systems
  • Stars: individual: WASP-76
  • Stars: individual: WASP-82
  • Stars: individual: WASP-90

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