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

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

2009-10-01

arxiv.org/abs/0910.0261v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

2 pages, 2 figures, to be published in the proceedings of the IAU Symposium No. 265, 2009

Scientific paper

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 C$_{2}$ and C I 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.

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