期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 721, 期 2, 页码 L79-L81出版社
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/721/2/L79
关键词
cosmology: theory; galaxies: evolution; galaxies: formation; methods: numerical; stars: formation
资金
- DOE at Fermila
- NSF [AST-0908063]
- NASA [NNX-09AJ54G]
- Fermilab, Kavli Institute for Cosmological Physics
- University of Chicago
The effect of the cosmic UV background on star formation in high-redshift galaxies is explored by means of high-resolution cosmological simulations. The simulations include star formation, three-dimensional radiative transfer, and a highly detailed interstellar medium model, and reach spatial resolution sufficient to resolve formation sites for molecular clouds. In the simulations, the local radiation field in the Lyman-Werner band around star-forming molecular clouds dominates over the cosmic UV background by a factor of 100, similarly to the interstellar radiation field in the Milky Way and in a few high-redshift galaxies for which measurements exist. The cosmic UV background in the Lyman-Werner band, therefore, is essentially irrelevant for star formation in normal galaxies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据