碳富集、极金属贫值 Population II 恒星
天体物理学
2007-05-23 v1
摘要
A significant fraction of very metal-poor stars have unexpectedly high carbon abundances. I recap on their discovery, describe the results of high-resolution spectroscopic studies of their composition, and consider possible origins. It is now clear that at least two, and possibly three different explanations are needed for their general characteristics.
关键词
引用
@article{arxiv.astro-ph/0211608,
title = {Carbon-rich, extremely metal-poor Population II stars},
author = {Sean G. Ryan},
journal= {arXiv preprint arXiv:astro-ph/0211608},
year = {2007}
}
备注
4 pages including 1 figure. Conference proceedings for "CNO in the Universe", St Luc, Switzerland, 10-14 September 2002 C. Charbonnel, D. Schaerer & G. Meynet (eds) ASP Conference Series