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Centro de Astrofísica da Universidade do Porto
Chemical anomalies in stars with planets?

Elisa Delgado Mena
CAUP

Abstract
The discovery of more than 700 extrasolar planets has given us the opportunity to thoroughly study their host stars. The determination of chemical abundances provide us with unique information not only about the stellar atmospheres but also about the processes that take place inside the stars and how they have been formed. The first difference we came across between stars with and without planets was that the former are on average more metallic but other trends have been reported during these years. I will make a short review about these studies and focus more specifically on light elements and the information they can give us about the formation of planetary systems.

20 June 2012, 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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