Cosmological conductive/cooling fronts as Ly alpha forest clouds

被引：2

作者：

Ferrara, A ^{[1
]}

Shchekinov, Y ^{[1
]}

机构：

[1] ROSTOV DON STATE UNIV,INST PHYS,ROSTOV NA DONU 344104,RUSSIA

来源：

ASTROPHYSICAL JOURNAL | 1996年 / 465卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

intergalactic medium; quasars; absorption lines;

D O I：

10.1086/310153

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We propose a simple model for the origin and evolution of Ly alpha forest clouds based on cosmological conductive/cooling fronts. In this model the Ly alpha forest arises in the interfaces between the intergalactic medium and cold clouds that could be tentatively identified with protogalaxies. Most of the properties of the Ly alpha forest absorbers are reproduced with a very restricted number of assumptions. Among these are the correct range of HI column density, cloud sizes, and redshift, and HI column density distributions for the absorbers. Several predictions and implications of the model are briefly discussed.

引用

页码：L91 / L94

页数：4

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