Number counts and clustering properties of bright distant red galaxies in the UKIDSS Ultra Deep Survey Early Data Release

  title={Number counts and clustering properties of bright distant red galaxies in the UKIDSS Ultra Deep Survey Early Data Release},
  author={Sylvie Foucaud and Omar Almaini and I. R. Smail and Christopher J. Conselice and K. P. Lane and Alastair Edge and Chris Simpson and James S. Dunlop and Ross J. McLure and Michele Cirasuolo and Paul Hirst and Mike G. Watson and M J Page},
  journal={Monthly Notices of the Royal Astronomical Society: Letters},
We describe the number counts and spatial distribution of 239 distant red galaxies ( DRGs), selected from the Early Data Release of the UKIDSS Ultra Deep Survey. The DRGs are identified by their very red infrared colours with (J - K)(AB) > 1.3, selected over 0.62 deg(2) to a 90 per cent completeness limit of K-AB similar or equal to 20.7. This is the first time that a large sample of bright DRGs has been studied within a contiguous area, and we provide the first measurements of their number… 

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