The host galaxy of GRB 060505: Host ISM properties

被引：20
作者：
Levesque, Emily M. [1 ]
Kewley, Lisa J. [1 ]
机构：
[1] Univ Hawaii, Inst Astron, Honolulu, HI 96822 USA
来源：
ASTROPHYSICAL JOURNAL | 2007年 / 667卷 / 02期
基金：
美国国家科学基金会;
关键词：
gamma rays : bursts;
D O I：
10.1086/522117
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the ISM environment of GRB 060505. Using optical emission-line diagnostic ratios, we compare the ISM properties of the GRB 060505 host region with the hosts of unambiguous long- and short-duration GRBs. We show that the metallicity, ionization state, and star formation rate of the GRB 060505 environment are more consistent with short-duration GRBs than with long- duration GRBs. We compare the metallicity and star formation rates of the GRB 060505 region with four other star-forming regions within the GRB 060505 host galaxy. We find no significant change in metallicity or star formation rate between the GRB 060505 region and the other four host regions. Our results are consistent with a compact-object-merger progenitor for GRB 060505.
引用
收藏
页码：L121 / L124
页数：4
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