WR stars in star forming regions

被引：0
|
作者：
Schmutz, W [1 ]
Vacca, WD [1 ]
机构：
[1] ETH Zentrum, Astron Inst, CH-8092 Zurich, Switzerland
来源：
FROM EXTRASOLAR PLANETS TO COSMOLOGY: THE VLT OPENING SYMPOSIUM | 2000年
关键词：
D O I：
10.1007/10720961_45
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
WR galaxies are characterized by broad emission features at 4686 A and occasionally at 4640 A and 5805 A. The features are attributed to stellar emission from a large population of WR stars. The presence of WR stars allows a determination of the age of the starburst. In a few WR galaxies the 4640 emission line has been measured to be as large or larger than the He II 4686 line. We demonstrate that a 4640/4686 ratio larger than unity cannot be produced by any known population of WR stars and discuss the implications for the interpretation of the star formation histories in WR galaxies.
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页码：307 / 312
页数：6
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