2003/02/14 by C. Abia, I. Dominguez, Abia, C. +13
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0302278
Oral talk presented in "CNO in the Universe". Eds. C. Charbonnel, D. Schaerer, & G. Maynet. ASI Conference Series, in press
arxiv created 2003/02/14 · arxiv updated 2009/12/01
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.