Redshift distribution of Lyα lines and metal systems

被引：3
|
作者：
Demianski, M
Doroshkevich, AG
Turchaninov, V
机构：
[1] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland
[2] Williams Coll, Dept Astron, Williamstown, MA 01267 USA
[3] Theoret Astrophys Ctr, DK-2100 Copenhagen O, Denmark
[4] Russian Acad Sci, MV Keldysh Appl Math Inst, Moscow 125047, Russia
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2000年 / 318卷 / 04期
关键词：
surveys; quasars : absorption lines; quasars : general; large-scale structure of Universe;
D O I：
10.1046/j.1365-8711.2000.03861.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The observed redshift distribution of Ly alpha lines and metal systems is examined in order to discriminate and to trace the evolution of structure elements observed in the galaxy distribution, at small redshifts, and to test the theoretical description of structure evolution. We show that the expected evolution of a filamentary component of structure describes quite well the redshift distribution of metal systems and stronger Ly alpha lines with log(N-HI)greater than or equal to 14, at z less than or equal to3. The redshift distribution of weaker Ly alpha lines can be attributed to the population of poorer structure elements (Zel'dovich pancakes), which were formed at high redshifts from the invisible dark matter and non-luminous baryonic matter, and which at lower redshifts are mainly merged and dispersed.
引用
收藏
页码：1177 / 1188
页数：12
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