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Galaxy clusters at 0.6 < z < 1.4 in the UKIDSS ultra deep survey early data release

Van Breukelen, C.; Clewley, L.; Bonfield, D.G.; Rawlings, S.; Jarvis, M.J.; Barr, J.M.; Foucaud, S.; ... Watson, M.G.; + view all (2006) Galaxy clusters at 0.6 < z < 1.4 in the UKIDSS ultra deep survey early data release. Monthly Notices of the Royal Astronomical Society Letters , 373 (1) L26-L30. 10.1111/j.1745-3933.2006.00236.x. Green open access

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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-μm Spitzer bands and optical BVRi'z' imaging from the Subaru Telescope over 0.5 deg2 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*≲Ltot≲ 50 L* , corresponding to masses 5 × 1013≲Mcluster≲ 3 × 1014 M⊙ for (M/M⊙)/(L/L⊙) = 75 h . The measured sky surface density of ∼10 clusters deg−2 for high-redshift (z= 0.5–1.5) , massive (> 1014 M⊙) clusters is precisely in line with theoretical predictions presented by Kneissl et al.

Type: Article
Title: Galaxy clusters at 0.6 < z < 1.4 in the UKIDSS ultra deep survey early data release
Open access status: An open access version is available from UCL Discovery
DOI: 10.1111/j.1745-3933.2006.00236.x
Publisher version: http://dx.doi.org/10.1111/j.1745-3933.2006.00236.x
Language: English
Keywords: Methods: analytical, methods: data analysis, surveys, galaxies: clusters: general, galaxies: high-redshift, galaxies: photometry
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10128
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