Star formation efficiency and host galaxies of Gamma-Ray Bursts

被引：0
|
作者：
Courty, S. [1 ]
Bjornsson, G. [1 ]
Gudmundsson, E. H. [1 ]
机构：
[1] Univ Iceland, Inst Sci, Dunhaga 3, IS-107 Reykjavik, Iceland
来源：
NUOVO CIMENTO C-COLLOQUIA AND COMMUNICATIONS IN PHYSICS | 2005年 / 28卷 / 4-5期
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D O I：
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Gamma-ray bursts are likely to be associated with regions of active star formation and may therefore be useful as cosmological tracers of galaxy formation. Using hydrodynamical/N-body simulations the cosmological properties of host galaxies are investigated. Assuming the hosts to be efficient star-forming objects, i.e. with high specific star formation rates, the majority of the candidate hosts are found to below mass, young galaxies with a moderate star formation rate. This picture, consistent with most observations of GRB host galaxies, corroborates the idea that gamma-ray bursts do not follow the cosmic star formation rate. More importantly the hosts should contribute to unveil the faint end of the galaxy luminosity function.
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页码：661 / 664
页数：4
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