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The Chemical Composition of Carbon C(N) stars

C. Abia·I. Dominguez·R. Gallino·S. Masera·M. Busso·O. Straniero·P. de Laverny·B. Plez
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Abstract

A chemical study of normal Galactic C(N) carbon stars is presented. Abundances of Li, CNO isotopes and s-elements are derived. The derived abundances of s-elements nicely agree with theoretical s-process nucleosynthesis predictions during the AGB phase. However, the figures obtained for Li and the 12C/13C ratios might imply the existence of a non-standard mixing process during the AGB phase operating preferentially in low mass stars. The intrinsic or extrinsic nature of C(N) stars is also discussed.

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C. Abia, I. Dominguez, R. Gallino, S. Masera, M. Busso, O. Straniero, P. de Laverny, B. Plez. 2003-02-14. The Chemical Composition of Carbon C(N) stars. https://arxiv.org/abs/astro-ph/0302278

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