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Characterisation of exoplanet host stars: A window into planet formation

N. C. Santos

Abstract
The detection of thousands of planets orbiting stars other than the Sun has shown that planets are common throughout the Galaxy. However, the diversity of systems found has also raised many questions regarding the process of planet formation and evolution. Interestingly, but perhaps not unexpectedly, crucial information to constraint the planet formation models comes from the analysis of the planet-host stars. In this talk I will review why it is so important to study and understand the stars when finding and characterising exoplanets. I will then present some of the most relevant star-planet relations found to date, and how they are helping us to understand planet formation and evolution. I will end with a presentation of the future steps in this field, including what Gaia will bring to help constrain the properties of planet-host stars, as well as to the star-planet connection.

Keywords
planetary systems, stars: abundances, planetary systems: formation

IAU Symposium S330 (Astrometry and Astrophysics in the Gaia sky)
Alejandra Recio-Blanco, Patrick de Laverny, Anthony G. A. Brown, Timo Prusti

Cambridge University Press
Volume 12, Page 369
2018 March

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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