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|Title:||Galaxy clusters at 0.6 < z < 1.4 in the UKIDSS Ultra Deep Survey Early Data Release|
|Authors:||van Breukelen, C.|
Watson, Michael G.
|Publisher:||Blackwell Publishing on behalf of the Royal Astronomical Society|
|Citation:||Monthly Notices of the Royal Astronomical Society, 2006, 373 (1), pp. L26-L30 (5)|
|Abstract:||We present the first cluster catalogue extracted from the UKIRT Infrared Deep Sky Survey (UKIDSS) Early Data Release. The catalogue is created using UKIDSS Ultra Deep Survey infrared J and K data combined with 3.6- and 4.5-mu m Spitzer bands and optical BVRi'z' imaging from the Subaru Telescope over 0.5 deg(2) in the Subaru XMM-Newton Deep Field. We have created a new cluster detection algorithm, based on the friends-of-friends and Voronoi tessellation methods, which utilizes probability distribution functions derived from a photometric redshift analysis. We employ mock catalogues to understand the selection effects and contamination associated with the algorithm. The cluster catalogue contains 13 clusters at redshifts 0.61 <= z <= 1.39 with luminosities 10 L* less than or similar to L(tot) less than or similar to 50 L*, corresponding to masses 5 x 10(13) less than or similar to M(cluster) less than or similar to 3 x 10(14)M circle dot for (M/M circle dot)/( L/L circle dot) = 75 h. The measured sky surface density of similar to 10 clusters deg(-2) for high-redshift (z = 0.5-1.5), massive (> 10(14)M circle dot) clusters is precisely in line with theoretical predictions presented by Kneissl et al.|
|Rights:||Copyright © 2006 The Authors. Journal compilation © 2006 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 from www.blackwell-synergy.com|
|Appears in Collections:||Published Articles, Dept. of Physics and Astronomy|
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|j.1745-3933.2006.00236.x.pdf||Publisher Version||5.34 MB||Adobe PDF||View/Open|
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