期刊
ASTROPHYSICAL JOURNAL
卷 703, 期 2, 页码 1352-1362出版社
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/703/2/1352
关键词
galaxies: star clusters; HII regions; ISM: bubbles; radiative transfer; stars: formation; stars: winds, outflows
资金
- Alfred P. Sloan Foundation
- NASA
- NSERC Canada
- National Science Foundation [AST-0807739]
We evaluate the role of radiation pressure in the dynamics of HII regions. We first determine under what conditions radiation pressure is significant in comparison to gas pressure and show that, while radiation pressure is generally unimportant for HII regions driven by a handful of massive stars, it is dominant for the larger HII regions produced by the massive star clusters found near the Galactic center and in starburst environments. We then provide a solution for the problem of how HII regions expand when radiation pressure influences their behavior. Finally, we compare radiation-dominated HII regions to other sources of stellar feedback, and argue that HII regions are probably the primary mechanism for regulating the formation of massive star clusters.
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