WASP-167b/KELT-13b: Joint discovery of a hot Jupiter transiting a rapidly rotating F1V star

  • L. Y. Temple
  • , C. Hellier
  • , M. D. Albrow
  • , D. R. Anderson
  • , D. Bayliss
  • , T. G. Beatty
  • , A. Bieryla
  • , D. J.A. Brown
  • , P. A. Cargile
  • , A. Collier Cameron
  • , K. A. Collins
  • , K. D. Colón
  • , I. A. Curtis
  • , G. D'Ago
  • , L. Delrez
  • , J. Eastman
  • , B. S. Gaudi
  • , M. Gillon
  • , J. Gregorio
  • , D. James
  • E. Jehin, M. D. Joner, J. F. Kielkopf, R. B. Kuhn, J. Labadie-Bartz, D. W. Latham, M. Lendl, M. B. Lund, A. L. Malpas, P. F.L. Maxted, G. Myers, T. E. Oberst, F. Pepe, J. Pepper, D. Pollacco, D. Queloz, J. E. Rodriguez, D. Ségransan, R. J. Siverd, B. Smalley, K. G. Stassun, D. J. Stevens, C. Stockdale, T. G. Tan, A. H.M.J. Triaud, S. Udry, S. Villanueva, R. G. West, G. Zhou

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

We report the jointWASP/KELT discovery ofWASP-167b/KELT-13b, a transiting hot Jupiter with a 2.02-d orbit around a V = 10.5, F1V star with [Fe/H] = 0.1 ± 0.1. The 1.5 RJup planet was confirmed by Doppler tomography of the stellar line profiles during transit. We place a limit of < 8 MJup on its mass. The planet is in a retrograde orbit with a sky-projected spin-orbit angle of λ=-165° ±5°. This is in agreement with the known tendency for orbits around hotter stars to be more likely to be misaligned. WASP-167/KELT-13 is one of the few systems where the stellar rotation period is less than the planetary orbital period. We find evidence of non-radial stellar pulsations in the host star, making it a δ-Scuti or γ -Dor variable. The similarity to WASP-33, a previously known hot-Jupiter host with pulsations, adds to the suggestion that close-in planets might be able to excite stellar pulsations.

Original languageEnglish (US)
Pages (from-to)2743-2752
Number of pages10
JournalMonthly Notices of the Royal Astronomical Society
Volume471
Issue number3
DOIs
StatePublished - Nov 1 2017
Externally publishedYes

Keywords

  • Planets and satellites: individual
  • Stars: individual
  • Starts: rotation
  • Techniques: photometric
  • Techniques: spectroscopic

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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