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Clustering of Red Galaxies Near a Radio-Loud Quasar at z = 1.086

  • I. Tanaka (a1), T. Yamada (a1), A. Aragón-Salamanca (a2), T. Kodama (a2), K. Ohta (a3) and N. Arimoto (a4)...

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We investigated the environment of the radio-loud quasar 1335.8+2834 at z = 1.086 where an excess surface number density of galaxies was reported by Huthings et al. (1993). By obtaining near-infrared and new deep optical images of the field, 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 old (2–4 Gyr) passively evolving elliptical galaxies at z = 1.1.

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References

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Hutchings, J. B., Crampton, D., & Persram, D. 1993, AJ, 106, 1324
Yamada, T., Tanaka, I.N., Aragón-Salamanca, A., Kodama, T., Ohta, K., & Arimoto, N. 1992, ApJ, 487, L125

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