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Title: Number counts and clustering properties of bright distant red galaxies in the UKIDSS Ultra Deep Survey Early Data Release
Authors: Foucaud, S.
Almaini, O.
Smail, I.
Conselice, C.J.
Lane, K.P.
Edge, A.C.
Simpson, C.
Dunlop, J.S.
McLure, R.J.
Cirasuolo, M.
Hirst, P.
Watson, Michael G.
Page, M.J.
First Published: 9-Feb-2007
Publisher: Blackwell Publishing on behalf of the Royal Astronomical Society
Citation: Monthly Notices of the Royal Astronomical Society, 2007, 376 (1), pp. L20-L24 (5)
Abstract: 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 counts and clustering. The population shows strong angular clustering, intermediate between those of K-selected field galaxies and optical/infrared-selected extremely red galaxies. Adopting the redshift distributions determined from other recent studies, we infer a high correlation length of r(0) similar to 11 h(-1) Mpc. Such strong clustering could imply that our galaxies are hosted by very massive dark matter haloes, consistent with the progenitors of present-day L greater than or similar to L(*) elliptical galaxies.
DOI Link: 10.1111/j.1745-3933.2007.00278.x
ISSN: 0035-8711
eISSN: 1365-2966
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © 2007 The Authors. Journal compilation © 2007 RAS. Deposited with reference to the publisher's archiving policy available from the Journal Exclusive Licence Form, which permits posting of the Blackwell Publishing PDF 6 months after publication. The definitive version is available at
Appears in Collections:Published Articles, Dept. of Physics and Astronomy

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