Physical Sciences and Mathematics Commons^™

A Group Of Galaxies At Redshift 2.38, Paul J. Francis, Bruce E. Woodgate, Stephen J. Warren, Palle Møller, Margaret Mazzolini, Andrew J. Bunker, James D. Lowenthal, Ted B. Williams, Takeo Minezaki, Yukiyasu Kobayashi, Yuzuru Yoshii

Astronomy: Faculty Publications

We report the discovery of a group of galaxies at redshift 2.38. We imaged ∼ 10% of a claimed supercluster of QSO absorption lines at z = 2.38. In this small field (2′ radius), we detect two Lyα-emitting galaxies. The discovery of two such galaxies in our tiny field supports Francis & Hewett's interpretation of the absorption-line supercluster as a high-redshift Great Wall. One of the Lyα galaxies lies 22″ from a background QSO and may be associated with a multicomponent Lyα absorption complex seen in the QSO spectrum. This galaxy has an extended (∼50 kpc), lumpy Lyα morphology surrounding …