1996/10/31 by B. Gustafsson, Bengt Gustafsson, Gustafsson, Bengt +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9610261
16 pages, LaTex, no figures, Invited Review at the IAU Symposium 177 ``The Carbon Star Phenomenon", to be published in the proceedings. LaTeX and postscript files also available at ftp.astro.uu.se/pub/articles/atmos/P107
arxiv created 1996/10/31 · arxiv updated 2009/12/01
The role of carbon stars in the build-up of chemical elements in galaxies is discussed on the basis of stellar evolution calculations and estimated stellar yields, abundance analyses of AGB stars, galactic-evolution models and abundance trends among solar-type disk stars. We conclude that the AGB stars in general, and carbon stars in particular, probably are main contributors of s-elements, that their contributions of flourine and carbon are quite significant, and that possibly their contributions of lithium, 13C and 22Ne are of some importance. Also contributions of N, Na and Al are discussed. The major uncertainties that characterize almost any statement concerning these issues are underlined.