The absorbing haloes around high-redshift radio galaxies:: the UVES view

被引：4

作者：

Wilman, RJ ^{[1
]}

Jarvis, MJ

Röttgering, HJA

Binette, L

机构：

[1] Univ Durham, Dept Phys, Durham DH1 3LE, England

[2] Sterrewacht Leiden, NL-2300 RA Leiden, Netherlands

[3] Univ Durham, Dept Phys, Durham DH1 3LE, England

[4] Oxford Astrophys, Oxford OX1 3RH, England

[5] Natl Autonomous Univ Mexico, Inst Astron, Mexico City 04510, DF, Mexico

来源：

NEW ASTRONOMY REVIEWS | 2003年 / 47卷 / 4-5期

关键词：

galaxies : active; galaxies : haloes; galaxies : high-redshift; galaxies : emission lines; galaxies; absorption lines;

D O I：

10.1016/S1387-6473(03)00039-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We summarise the properties of the absorbing haloes around two high-redshift radio galaxies studied with the VLT-UVES echelle spectrograph. The absorbers in 0943 - 242 (z = 2.92) exhibit little further structure compared with previous data-the main absorber still has N(HI) similar or equal to 10(19) cm(-2)-reinforcing the picture in which the absorbing gas occupies a smooth shell beyond the emission line halo. In 0200+015 (z = 2.23) the main absorber now splits into two spatially-resolved systems with N(HI) = 4 x 10(14) cm(-2), one of which has strong CIV absorption, implying a metallicity of Z similar or equal to 10 Zcircle dot. We explain the differences between the two sources with an evolutionary scenario, invoking interaction with the expanding radio source and metal enrichment via a starburst superwind. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：279 / 283

页数：5

共 9 条

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