Column density distribution of galactic Lyα absorption systems

被引：1
|
作者：
Cirkovic, MM [1 ]
Samurovic, S
机构：
[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA
[2] Univ Trieste, Dipartimento Astron, I-34131 Trieste, Italy
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2000年 / 271卷 / 01期
关键词：
D O I：
10.1023/A:1002150321117
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A simple consistency argument for hypothesis of the galactic halo origin of the Ly alpha forest absorption lines is advanced, based on the recent determination of column-density vs. impact parameter relation for the low-redshift gaseous galactic haloes. It is shown that observations of neutral hydrogen absorption around luminous galaxies are consistent with the index of the power-law column density distribution derived from statistical analyses of large samples of high-redshift Ly alpha forest lines.
引用
收藏
页码：91 / 95
页数：5
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