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Published online by Cambridge University Press: 25 May 2016
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.