Galaxy protocluster candidates at 1.6<z<2

Details Galaxy protocluster candidates at 1.6<z<2 Galaxy protocluster candidates at 1.6<z<2

2010-08-05

arxiv.org/abs/1008.1094v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

accepted for publication in A&A, 16 pages, 13 figures, 3 tables

Scientific paper

We present a study of protoclusters associated with high redshift radio galaxies. We imaged MRC1017-220 (z=1.77) and MRC0156-252 (z=2.02) using the near-infrared wide-field (7.5'x7.5') imager VLT/HAWK-I in the Y, H and Ks bands. We present the first deep Y-band galaxy number counts within a large area (200 arcmin2). We then develop a purely near-infrared colour selection technique to isolate galaxies at 1.6

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