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A Damped Lyα Absorption-Line System in an Apparent Void at Redshift 2.38

Published online by Cambridge University Press:  05 March 2013

Leith E. H. Godfrey  and
Paul J. Francis
Leith E. H. Godfrey
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Canberra ACT 0200, Australia
Paul J. Francis*
Affiliation:
Research School of Astronomy and Astrophysics, Australian National University, Canberra ACT 0200, Australia
*
BCorresponding author. Email: pfrancis@mso.anu.edu.au
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Abstract

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We study the contents of an apparent void in the distribution of Lyα emitting galaxies at redshift 2.38. We show that this void is not empty, but contains a damped Lyα absorption-line system, seen in absorption against background QSO 2138-4427. Imaging does not reveal any galaxy associated with this absorption-line system, but it contains metals (Fe/H ∼ −1.3), and its large velocity range (∼180 km s−1) implies a significant mass.

Keywords

Large Scale Structure of Universequasars: individual (2138-4427)quasars: absorption lines
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 22 , Issue 3: Featuring Gravity Workshop 2004 , 2005 , pp. 245 - 248
Copyright
Copyright © Astronomical Society of Australia 2005

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