CDM 宇宙中原始星形成区
天体物理学
2009-10-28 v1
摘要
我们开发了一个三维两层层次宇宙代码,采用真实且稳健的多物种非平衡离子化和辐射冷却过程处理方法,用于探究源于标准 CDM 主导宇宙中高-σ扰动的原始星形成区。我们发现,在非常高的红移(z ~ 40)处,可能产生质量约为 ~1000Ms 的引力束缚和冷却结构。这些小尺度结构中分子氢形成遵循 Abel (1995) 和 Tegmark 等 (1996) 的解析预测得很好。我们还讨论了 cosmological 结构冷却和坍缩所必须具备的最小质量。
引用
@article{arxiv.astro-ph/9611224,
title = {Primordial Star Forming Regions in a CDM Universe},
author = {Yu Zhang and Michael L. Norman and Peter Anninos and Tom Abel},
journal= {arXiv preprint arXiv:astro-ph/9611224},
year = {2009}
}
备注
4 pages, with one figure that prints in color. To appear in the proceedings of the 7th Annual Astrophysics Conference in Maryland, STAR FORMATION, NEAR AND FAR, eds. Stephen S. Holt and Lee G. Mundy. This paper and some of the referenced articles are also available at http://lca.ncsa.uiuc.edu/~tom/PGas/bib.html