The density of extremely red objects around high-z radio-loud active galactic nuclei

被引：22

作者：

Cimatti, A. ^{[1
]}

Villani, D. ^{[2
]}

Pozzetti, L. ^{[1
]}

Di Serego Alighieri, S. ^{[1
]}

机构：

[1] Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, I-50125 Firenze, Italy

[2] Dipartimento di Astronomia, Università di Firenze, Largo E. Fermi 5, I-50125 Firenze, Italy

来源：

| 2000年 / Blackwell Publishing Ltd卷 / 318期

关键词：

Surveys; -; Color;

D O I：

10.1046/j.1365-8711.2000.03736.x

中图分类号：

学科分类号：

摘要：

We present the results of a K-band imaging survey of 40 arcmin2 in fields around 14 radio-loud active galactic nuclei (AGN), comprising six radio galaxies and eight quasars, with z > 1.5. The survey, which is 80 per cent complete to K 1.5 radio galaxies and radio-loud quasars. At 18 6 in comparison with the general field. Consistently, we also find that the R - K colour distribution of all the galaxies in the AGN fields is significantly redder than the colour distribution of the field galaxies. On the other hand, the distribution of the R - K colours is indistinguishable from that of galaxies taken from literature fields around radio-loud quasars at 1

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