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Red Galaxies around a Quasar at z=1.1 and their Ages

Published online by Cambridge University Press:  25 May 2016

I. Tanaka ,
T. Yamada ,
A. Aragón-Salamanca ,
T. Kodama ,
K. Ohta  and
N. Arimoto
I. Tanaka
Affiliation:
Astronomical Institute, Tohoku University, Aoba-ku, Sendai 980-77, Japan
T. Yamada
Affiliation:
Astronomical Institute, Tohoku University, Aoba-ku, Sendai 980-77, Japan
A. Aragón-Salamanca
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge, CB3 0HA, UK
T. Kodama
Affiliation:
Institute of Astronomy, Madingley Road, Cambridge, CB3 0HA, UK
K. Ohta
Affiliation:
Department of Astronomy, Kyoto University, Kyoto, 606-01, Japan
N. Arimoto
Affiliation:
Institute of Astronomy, University of Tokyo, Mitaka, Tokyo 181, Japan

Extract

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We obtained near-infrared and new deep optical images of the field near the radio-loud quasar 1335.8+2834 at z=1.086 where excess of galaxy surface number density was reported by Huthings et al. [AJ, 106, 1324]. We found a clustering of objects with very red optical-NIR color, 4 < R–K < 6 and 3 < I–K < 5 near the quasar. The colors and magnitude of the reddest objects are consistent with those predicted for luminous (> 0.5L∗) and old (2-4 Gyr old) passively evolving elliptical galaxies at z=1.1.

Type
III. Galaxy Formation and Evolution
Information
Symposium - International Astronomical Union , Volume 183: Cosmological Parameters and the Evolution of the Universe , 1999 , pp. 164
Copyright
Copyright © Kluwer 1999