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Stellar Parameters for a Sample of Stars with Planets

Published online by Cambridge University Press:  09 March 2010

Luan Ghezzi ,
Katia Cunha ,
Francisco X. de Araújo ,
Verne V. Smith ,
Ramiro de la Reza  and
Simon Schuler
Luan Ghezzi
Affiliation:
Observatório Nacional, Rua General José Cristino, 77, 20921-400, São Cristóvão, Rio de Janeiro, RJ, Brazil; email: luan@on.br
Katia Cunha
Affiliation:
Observatório Nacional, Rua General José Cristino, 77, 20921-400, São Cristóvão, Rio de Janeiro, RJ, Brazil; email: luan@on.br NOAO, 950 N Cherry Ave., Tucson, AZ 85719, USA
Francisco X. de Araújo
Affiliation:
Observatório Nacional, Rua General José Cristino, 77, 20921-400, São Cristóvão, Rio de Janeiro, RJ, Brazil; email: luan@on.br
Verne V. Smith
Affiliation:
NOAO, 950 N Cherry Ave., Tucson, AZ 85719, USA
Ramiro de la Reza
Affiliation:
Observatório Nacional, Rua General José Cristino, 77, 20921-400, São Cristóvão, Rio de Janeiro, RJ, Brazil; email: luan@on.br
Simon Schuler
Affiliation:
NOAO, 950 N Cherry Ave., Tucson, AZ 85719, USA
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Abstract

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The study of chemical abundances in stars with planets is an important ingredient for the models of formation and evolution of planetary systems. In order to determine accurate abundances, it is crucial to have a reliable set of atmospheric parameters. In this work, we describe the homogeneous determination of effective temperatures, surface gravities and iron abundances for a large sample of stars with planets as well as a control sample of stars without giant planets. Our results indicate that the metallicity distribution of the stars with planets is more metal rich by ~0.13 dex than the control sample stars.

Keywords

stars: abundancesstars: atmospheres(stars:) planetary systems: formation
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 432 - 433
Copyright
Copyright © International Astronomical Union 2010

References

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