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Centro de Astrofísica da Universidade do Porto

Correlating planetary with stellar parameters

A. Mortier, N. C. Santos, S. G. Sousa

Abstract.
Over the years, the search for extrasolar planetary systems accelerated. Over 550 planet hosts are known today, hosting more than 750 planets. Several previous studies have shown that stellar metallicity and mass have an influence on planet formation. But what exactly is their influence on the resulting planets and their properties? We studied the largest sample of stars with planets where the stellar parameters are all derived in the same way. This makes it possible to perform a uniform statistical analysis. We look into the correlations of these stellar properties with planetary properties. Understanding these correlations will put constraints on theories of planet formation and help us in our understanding of the formation processes. In this talk we will present our unique sample and the results of this analysis.

17th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun
Barcelona, Spain
June 2012

Type: Poster

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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