A Damped Ly-alpha Absorption-line System in an Apparent Void at Redshift 2.38

Details A Damped Ly-alpha Absorption-line System in an Apparent Void at Redshift 2.38 A Damped Ly-alpha Absorption-line System in an Apparent Void at Redshift 2.38

2005-06-22

arxiv.org/abs/astro-ph/0506525v1

Astronomy and Astrophysics

Astrophysics

Accepted for publication in Publ. Ast. Soc. Australia

Scientific paper

10.1071/AS05009

We study the contents of an apparent void in the distribution of Ly-alpha emitting galaxies at redshift 2.38. We show that this void is not empty, but contains a damped Ly-alpha 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) implies a significant mass.

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