A Caltech Library Service

Surveys for z > 3 Damped Lyα Absorption Systems: The Evolution of Neutral Gas

Storrie-Lombardi, Lisa J. and Wolfe, Arthur M. (2000) Surveys for z > 3 Damped Lyα Absorption Systems: The Evolution of Neutral Gas. Astrophysical Journal, 543 (2). pp. 552-576. ISSN 0004-637X.

[img] PDF - Published Version
See Usage Policy.

[img] PDF - Erratum
See Usage Policy.


Use this Persistent URL to link to this item:


We have completed spectroscopic observations using LRIS on the Keck 1 telescope of 30 very high redshift quasars, 11 selected for the presence of damped Lyα absorption systems and 19 with redshifts z > 3.5 not previously surveyed for absorption systems. We have surveyed an additional 10 QSOs with the Lick 120'' and the Anglo-Australian Telescope. We have combined these with previous data, resulting in a statistical sample of 646 QSOs and 85 damped Lyα absorbers with column densities N_(H i) ≥ 2 × 10^(20) atoms cm^(-2) covering the redshift range 0.008 ≤ z ≤ 4.694. Four main features of how the neutral gas in the universe evolves with redshift are evident from these data.

Item Type:Article
Related URLs:
URLURL TypeDescription
Storrie-Lombardi, Lisa J.0000-0002-5987-5210
Additional Information:© 2000. The American Astronomical Society. Received 2000 March 2; accepted 2000 June 12. We thank Julia Kennefick, George Djorgovski, Mike Irwin, and Richard McMahon for providing QSO coordinates prior to publication and the staff at Keck, Lick, and the AAT for their able assistance in obtaining these observations. L. S. L. thanks Jason Prochaska, Celine Peroux, and Max Pettini, and an anonymous referee for helpful suggestions.
Errata:Lisa J. Storrie-Lombardi and Arthur M. Wolfe 2003 ApJ 592 1263
Group:Infrared Processing and Analysis Center (IPAC)
Subject Keywords:galaxies: evolution; intergalactic medium; quasars: absorption lines
Issue or Number:2
Record Number:CaltechAUTHORS:20170321-135400195
Persistent URL:
Official Citation:Lisa J. Storrie-Lombardi and Arthur M. Wolfe 2000 ApJ 543 552
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:75276
Deposited By: George Porter
Deposited On:21 Mar 2017 21:07
Last Modified:03 Oct 2019 16:48

Repository Staff Only: item control page