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Photospheric parameters and C abundances in solar-like stars with and without planets

Published online by Cambridge University Press:  09 March 2010

Ronaldo Da Silva  and
André Milone
Ronaldo Da Silva
Affiliation:
Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, Brazil email: [email protected]
André Milone
Affiliation:
Divisão de Astrofísica, Instituto Nacional de Pesquisas Espaciais, Brazil email: [email protected]
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Abstract

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We have been analyzing a large sample of solar-like stars with and without planets in order to homogeneously measure their photospheric parameters and Carbon abundances. Our sample contains around 200 stars in the solar neighborhood observed with the ELODIE spectrograph, for which the observational data are publicly available. We performed spectral synthesis of prominent bands of C2 and CI lines, aiming to accurately obtain the C abundances. We intend to contribute homogeneous results to studies that compare elemental abundances in stars with and without known planets. New arguments will be brought forward to the discussion of possible chemical anomalies that have been suggested in the literature, leading us to a better understanding of the planetary formation process. In this work we focus on the C abundances in both stellar groups of our sample.

Keywords

stars: fundamental parametersstars: abundancesplanetary systems
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. 426 - 427
Copyright
Copyright © International Astronomical Union 2010

References

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