Towards a direct detection of warm gas in galactic haloes at cosmological distances

被引：8

作者：

Cirkovic, MM ^{[1
]}

Bland-Hawthorn, J

Samurovic, S

机构：

[1] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[2] Astron Observ, YU-11000 Belgrade, Yugoslavia

[3] Anglo Australian Observ, Epping, NSW 2121, Australia

[4] Publ Observ, YU-11000 Belgrade, Yugoslavia

[5] Univ Trieste, Dipartimento Astron, I-34131 Trieste, Italy

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1999年 / 306卷 / 01期

关键词：

techniques : spectroscopic; galaxies : haloes; galaxies : ISM;

D O I：

10.1046/j.1365-8711.1999.02645.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent highly sensitive detections of line emission from extended gas in the local Universe demonstrate the feasibility of detecting Ha-emitting galactic haloes out to z similar to 1. We determine the form of the surface brightness versus redshift dependence, which takes into account UV background evolution. Successful detections will have a major impact on a wide range of fields, in particular the source of ionization in QSO absorption systems.

引用

页码：L15 / L18

页数：4

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