Stéphane Udry, Université de Genève
Extra-solar planets obtain a very high scientific and public interest since the detection 17 years ago of the reflex motion due to a Jupiter-mass object around the solar-type star 51 Pegasi. During the ensuing years, we learned that planets are common, and that planetary formation processes may produce a surprising variety of configurations: masses considerably larger than Jupiter, planets moving on highly eccentric orbits, planets very close to their stars, planets in resonant multi-planet systems, planets orbiting components of stellar binaries, etc. Understanding the physical reasons for such wide variations in outcome remains a central issue in planet-formation theory. In this presentation I will review some of the most interesting results outlining the motivations and development that led to these results, and showing how they shape our new understanding of the formation and structure of planetary systems.
Cette conférence s'adresse à tous, y compris les professeurs, les chercheurs et les étudiants des trois cycles.
Cette conférence est présentée par le Département de physique de l'Université de Montréal.