The ESI/Keck II damped Lyα abundance database

被引：129

作者：

Prochaska, JX ^{[1
]}

Gawiser, E

Wolfe, AM

Cooke, J

Gelino, D

机构：

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

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

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

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2003年 / 147卷 / 02期

关键词：

quasars : absorption lines;

D O I：

10.1086/375839

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This paper presents chemical abundance measurements for 37 damped Lyalpha systems at z > 2.5 observed with the Echellette Spectrograph and Imager on the Keck II telescope. We measure the H I column densities of these damped systems through Voigt profile fits to their Lyalpha profiles, and we implement the apparent optical depth method to determine ionic column densities. Figures and tables of all relevant data are presented. A full analysis of the chemical enrichment history described by these observations will be presented in a future paper. This data set is also valuable for efficiently planning future echelle observations and for rough abundance pattern analyses. We aim to make this entire data set public within 3 years of this publication.

引用

页码：227 / 264

页数：38

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