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Centro de Astrofísica da Universidade do Porto
Planets at twilight: implications on their formation and evolution

Jorge Lillo Box
Centro de Astrobiologia (CSIC-INTA)

Abstract
At present, around two thousand extrasolar planets have been confirmed or validated. This large crop of planetary systems with very different configurations now allows us to start answering many questions about their formation and evolution, with the final goal of understanding the process that formed the Solar System. So far, several approaches have been applied to unveil the mechanisms of planet formation: theoretical simulations, observations of protoplanetary disks, population synthesis, etc. In this talk, I will present another approach: analyzing planet formation and evolution from the information provided by planets at the end of their lives. These results were part of my thesis in which we have started to fill the gap of planets at this stage, orbiting in close-in orbits around giant stars. I will discuss what these planets can tell us about their formation and evolution history and the implications that their detection and characteristics have on these processes. At present, around two thousand extrasolar planets have been confirmed or validated. This large crop of planetary systems with very different configurations now allows us to start answering many questions about their formation and evolution, with the final goal of understanding the process that formed the Solar System. So far, several approaches have been applied to unveil the mechanisms of planet formation: theoretical simulations, observations of protoplanetary disks, population synthesis, etc. In this talk, I will present another approach: analyzing planet formation and evolution from the information provided by planets at the end of their lives. These results were part of my thesis in which we have started to fill the gap of planets at this stage, orbiting in close-in orbits around giant stars. I will discuss what these planets can tell us about their formation and evolution history and the implications that their detection and characteristics have on these processes.

4 September 2015, 13:30

Centro de Astrofísica
Rua das Estrelas
4150-762 Porto

Institute of Astrophysics and Space Sciences

Institute of Astrophysics and Space Sciences (IA) is a new but long anticipated research infrastructure with a national dimension. It embodies a bold but feasible vision for the development of Astronomy, Astrophysics and Space Sciences in Portugal, taking full advantage and fully realizing the potential created by the national membership of the European Space Agency (ESA) and the European Southern Observatory (ESO). IA resulted from the merging the two most prominent research units in the field in Portugal: the Centre for Astrophysics of the University of Porto (CAUP) and the Center for Astronomy and Astrophysics of the University of Lisbon (CAAUL). It currently hosts more than two-thirds of all active researchers working in Space Sciences in Portugal, and is responsible for an even greater fraction of the national productivity in international ISI journals in the area of Space Sciences. This is the scientific area with the highest relative impact factor (1.65 times above the international average) and the field with the highest average number of citations per article for Portugal.

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