Amaury H. M. J. Triaud
Observatoire de Genève

Abstract
Gas giants are regularly found quite close to their star, too close so that they could realistically have formed at their current orbit. Two competing theories are attempting to explain planetary orbital migration. I will present observations of the Rossiter-McLaughlin effect, an effect happening for transiting planets, which allow us to measure the angle between the planet's orbital spin and the star's spin axis. The distribution of those angles is a very important clue to understanding the origins of hot Jupiters.

2011 October 26, 15:00

IA/U.Porto
Centro de Astrofísica da Universidade do Porto (Auditorium)
Rua das Estrelas, 4150-762 Porto