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Precise characterisation of exoplanet-host stars parameters

Published online by Cambridge University Press:  10 November 2011

Sylvie Vauclair
Sylvie Vauclair*
Affiliation:
Institut de Recherches en Astrophysique et Planetologie, 14 avenue Edouard Belin, 31400, Toulouse, France email: [email protected]
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Abstract

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Studying the internal structure of exoplanet-host stars compared to that of similar stars without detected planets is particularly important for the understanding of planetary formation. In this framework, asteroseismic studies represent an excellent tool for a better characterization of stars and for a precise determination of the stellar parameters like mass, radius, gravity, effective temperature. The detection of stellar oscillations is obtained with the same instruments as used for the discovery of exoplanets, both from the ground and from space, although the time scales are very different. Here I discuss some details about the characterization of exoplanethost stars from seismology and the importance of the helium and heavy element abundances in this respect.

Keywords

stars: abundancesstars: oscillationsstars: interiors
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 6 , Symposium S276: The Astrophysics of Planetary Systems: Formation, Structure, and Dynamical Evolution , October 2010 , pp. 30 - 33
Copyright
Copyright © International Astronomical Union 2011

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