Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-02-24
Astronomy and Astrophysics
Astrophysics
37 pages including 11 Postscript figures. To appear in the June 2000 issue of the Astronomical Journal
Scientific paper
10.1086/301399
We have discovered a concentration of extremely red objects (EROs; R-K>6) in the field of the z=2.69 quasar QSO 1213-0017 (UM 485), which is significantly overabundant compared to the field ERO surface density. The optical/near-IR colors of the EROs and numerous other red galaxies in this field are consistent with elliptical galaxies at z=1-2. HST optical images for a subset of galaxies show regular morphologies, most of them being disky or diffuse and without any obvious evidence for interactions. Ground-based IR images show similar morphologies, indicating any dust reddening in these objects is spatially uniform. Optical spectroscopy with the W. M. Keck Telescope has found that four of the red galaxies lie at
Adelberger Kurt Ludvig
Bundy Kevin A.
Dey Arjun
Dickinson Mark Everett
Graham James R.
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