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The discovery of six Lyα emitters near a radio galaxy at z~5.2
The authors present the results of narrow-band and broad-band imaging with the Very Large Telescope of the field surrounding the radio galaxy TN J0924-2201 at z = 5.2. 14 candidate Ly{alpha} emitters with an observed equivalent width of at least 124 {angstrom} were detected. Spectroscopy of 8 of these objects revealed 6 having redshifts similar to that of the radio galaxy. The density of emitters near the radio galaxy is a factor 3-4 higher than in the field, and comparable to the density of Ly{alpha} emitters in the protocluster 1338-1942 at z = 4.1. The Ly{alpha} emitters near TN J0924-2201 could therefore be part of a structure that will evolve into a 10{sup 15} M{sub {circle_dot}} cluster. These observations confirm that substantial clustering of Ly{alpha} emitters occur at z > 5 and strengthen the idea that radio galaxies in the early Universe pinpoint regions of high density.
Date:
September 15, 2004
Creator:
Venemans, B. P.; Rottgering, H. A.; Overzier, R. A.; Miley, G. K.; De Breuck, C.; Kurk, J. D. et al.
System:
The UNT Digital Library
Extremophiles 2004
None
Date:
September 19, 2004
Creator:
Robb, Frank
System:
The UNT Digital Library