WASP-8b: a retrograde transiting planet in a multiple system
arXiv:1006.5089 · doi:10.1051/0004-6361/201014768
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.
A&A Letter Accepted (21/6/2010)