Clumpy ultracompact H II regions .3. Cometary morphologies around stationary stars

被引：0
|
作者：
Williams, RJR [1 ]
Dyson, JE [1 ]
Redman, MP [1 ]
机构：
[1] UNIV LEEDS,DEPT PHYS & ASTRON,LEEDS,W YORKSHIRE,ENGLAND
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1996年 / 280卷 / 02期
关键词：
hydrodynamics; stars; mass-loss; H II regions; ISM; structure; radio lines;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Cometary ultracompact H II regions have been modelled as the interaction of the hypersonic wind from a moving star with the molecular cloud which surrounds the star. We here show that a similar morphology can ensue even if the star is stationary with respect to the cloud material. We assume that the H II region is within a stellar wind bubble which is strongly mass loaded: the cometary shape results from a gradient in the distribution of mass loading sources. This model circumvents problems associated with the necessarily high spatial velocities of stars in the moving star models.
引用
收藏
页码：667 / 672
页数：6
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