The Chemical Composition of Carbon C(N) stars
Astrophysics
2007-05-23 v1
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.
Cite
@article{arxiv.astro-ph/0302278,
title = {The Chemical Composition of Carbon C(N) stars},
author = {C. Abia and I. Dominguez and R. Gallino and S. Masera and M. Busso and O. Straniero and P. de Laverny and B. Plez},
journal= {arXiv preprint arXiv:astro-ph/0302278},
year = {2007}
}
Comments
Oral talk presented in "CNO in the Universe". Eds. C. Charbonnel, D. Schaerer, & G. Maynet. ASI Conference Series, in press