金属富集星团:其形成所致未被充分考虑的因素?
天体物理学
2007-05-23 v1
摘要
目前尚未被充分考虑但相当可信的“化学因子”可能是造成球状星系中旧金属丰富星团(MRGCs)以及其在不规则星系中对应物——年轻(中间年龄)巨型恒星团(MSCs)形成的原因。其形成大概发生在宿主星系化学演化的同一阶段,与宿主星系在相同金属浓度(Zsol/3,[Fe/H]~-0.5)附近显著增强的星际形成活动相关。该过程在巨型球状星系中很快发生,随后在质量较低的球状星系中稍晚发生,在不规则星系中则晚得多。
引用
@article{arxiv.astro-ph/0605109,
title = {Metal-Rich Globular Clusters: an Unaccounted Factor Responsible for Their Formation?},
author = {Valery V. Kravtsov},
journal= {arXiv preprint arXiv:astro-ph/0605109},
year = {2007}
}
备注
2 pages, 1 figure; to be published in the proceedings of the conference "Globular Clusters - Guides to Galaxies", held in Concepcion, Chile, March 2006