The Frequency of Carbon-Enhanced Metal-Poor Stars Based on SDSS Spectroscopy
Abstract
The publicly available stellar database from SDSS contains many hundreds of metal-poor stars with large enhancements of carbon. The Galactic extension of SDSS, SEGUE, will identify several thousand more. Many of these Carbon-Enhanced Metal-Poor (CEMP) stars are likely to be enhanced in s-process elements created by AGB companions and dumped to the surviving member of a binary pair through either Roche-Lobe mass transfer or the operation of a stellar wind (CEMP-s stars). Based on previous high-resolution investigation of CEMP stars, an interesting subset of this sample is expected to show little or no s-process enhancement (CEMP-no stars).
- Publication:
-
Stellar Populations as Building Blocks of Galaxies
- Pub Date:
- August 2007
- DOI:
- 10.1017/S1743921307008071
- Bibcode:
- 2007IAUS..241..252M
- Keywords:
-
- stars: abundances;
- carbon;
- chemically peculiar;
- Galaxy: structure