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Tidal evolution of planets around brown dwarfs

Emeline Bolmont
University of Bordeaux-CNRS, Floirac

Abstract
The discovery of more than 900 planets orbiting other stars than our Sun makes this period very exciting. Our knowledge which was based on the Solar System has been challenged by new planetary systems which are very different from our system. Some of them are much more compact than the Solar System. Some planets are located extremely close-in from their star, within the orbital distance of Mercury, in a region where tidal effects are important. Understanding the structure of the known exoplanetary systems and the future ones requires to take into account the physics of tidal evolution.

I will talk about the dynamical and tidal evolution of planetary systems orbiting evolving brown dwarfs. Close-in planets orbiting brown dwarfs are very interesting to study because they are influenced by tides and they can be in the habitable zone: the region around a star where a planet with an atmosphere can have water on its surface. I will show that tides are important for these systems because it has an effect on the possible habitability of planets.

2013 December 10, 13:30

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

Instituto de Astrofísica e Ciências do Espaço Universidade do Porto Faculdade de Ciências da Universidade de Lisboa
Fundação para a Ciência e a Tecnologia COMPETE 2020 PORTUGAL 2020 União Europeia