Damped Lyα systems

被引：641

作者：

Wolfe, AM ^{[1
]}

Gawiser, E

Prochaska, JX

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Ctr Astrophys & Space Sci, La Jolla, CA 92093 USA

[3] Yale Univ, Dept Astron, NSF Astron & Astrophys Postdoctoral Fellow, New Haven, CT 06520 USA

[4] Univ Calif Santa Cruz, Univ Calif Observ, Lick Observ, Santa Cruz, CA 95064 USA

来源：

ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS | 2005年 / 43卷

关键词：

galaxies : cosmology; evolution; QSOs : absorption lines;

D O I：

10.1146/annurev.astro.42.053102.133950

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Observations of damped Ly alpha systems offer a unique window on the neutral-gas reservoirs that gave rise to galaxies at high redshifts. This review focuses on critical properties such as the H I and metal content of the gas and on independent evidence for star formation. Together, these provide an emerging picture of gravitationally bound objects in which accretion of gas from the IGM replenishes gas consumed by star formation. Other properties such as dust content, molecular content, ionized-gas content, gas kinematics, and galaxy identifications are also reviewed. These properties point to a multiphase ISM in which radiative and hydrodynamic feedback processes are present. Numerical simulations and other types of models used to describe damped Lya systems within the context of galaxy formation are also discussed.

引用

页码：861 / 918

页数：58

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