WASP-8b: a retrograde transiting planet in a multiple system

Didier Queloz; David Anderson; Andrew Collier Cameron; Michaël Gillon; Leslie Hebb; Coel Hellier; Pierre Maxted; Francesco Pepe; Don Pollacco; Damien Ségransan; Barry Smalley; Amaury H. M. J Triaud; Stéphane Udry; Richard West

doi:10.1051/0004-6361/201014768

WASP-8b: a retrograde transiting planet in a multiple system

Earth and Planetary Astrophysics 2015-05-19 v1

Authors: Didier Queloz , David Anderson , Andrew Collier Cameron , Michaël Gillon , Leslie Hebb , Coel Hellier , Pierre Maxted , Francesco Pepe , Don Pollacco , Damien Ségransan , Barry Smalley , Amaury H. M. J Triaud , Stéphane Udry , Richard West

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Abstract

We report the discovery of WASP-8, a transiting planet of 2.25+-0.08 M_Jup on a strongly inclined eccentric 8.15-day orbit, moving in a retrograde direction to the rotation of its late-G host star. Evidence is found that the star is in a multiple stellar system with two other companions. The dynamical complexity of the system indicates that it may have experienced secular interactions such as the Kozai mechanism or a formation that differs from the ``classical" disc-migration theory.

Keywords

exoplanet transits

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@article{arxiv.1006.5089,
  title  = {WASP-8b: a retrograde transiting planet in a multiple system},
  author = {Didier Queloz and David Anderson and Andrew Collier Cameron and Michaël Gillon and Leslie Hebb and Coel Hellier and Pierre Maxted and Francesco Pepe and Don Pollacco and Damien Ségransan and Barry Smalley and Amaury H. M. J Triaud and Stéphane Udry and Richard West},
  journal= {arXiv preprint arXiv:1006.5089},
  year   = {2015}
}

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A&A Letter Accepted (21/6/2010)

WASP-8b: a retrograde transiting planet in a multiple system

Abstract

Keywords

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