Gas metallicities and early evolution of distant radio galaxies

被引：7
|
作者：
Villar-Martín, M [1 ]
Fosbury, R
Vernet, J
Cohen, M
Cimatti, A
Alighieri, SD
机构：
[1] Univ Hertfordshire, Hatfield AL10 9AB, Herts, England
[2] ESO, Garching, Germany
[3] CALTECH, Pasadena, CA 91125 USA
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2001年 / 277卷 / Suppl 1期
关键词：
elliptical galaxies; abundances; galaxy evolution;
D O I：
10.1023/A:1012764309451
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
By modeling the rich emission line spectra of a sample of high redshift (HzRG, z similar to2.5) radio galaxies we find that solar and supersolar metallicities are common in the extended gas of these objects. Our models and the comparison with high redshift quasars suggest that HzRG at z similar to 2.5 are associated with intense star formation activity. This is consistent with chemical evolution models for giant ellipticals and it supports the idea that distant powerful radio galaxies are progenitors of giant ellipticals. We might be witnessing different evolutive status in different objects.
引用
收藏
页码：571 / 574
页数：4
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