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18 April 2024

» arxiv » astro-ph/9910434

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Extremely Red Objects in the Field of QSO 1213-0017: A Galaxy Concentration at z=1.31
Michael C. Liu ; Arjun Dey ; James R. Graham ; Charles C. Steidel ; Kurt L. Adelberger ;
Date:	26 Oct 1999
Subject:	astro-ph
Affiliation:	UC Berkeley, NOAO, Caltech
Abstract:	We have discovered an excess of extremely red objects (EROs) surrounding the z=2.69 quasar QSO 1213-0017 (UM 485). Optical/IR colors for these galaxies are consistent with z=1-2 ellipticals, and there are at least 5 galaxies with spectroscopic redshifts at =1.31. Keck optical spectra for 3 of the red galaxies show rest-frame UV breaks resembling local elliptical galaxies. Our initial results suggest a coherent structure in redshift, possibly arising from a massive galaxy cluster.
Source:	arXiv, astro-ph/9910434
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