Van Breukelen, C.; Clewley, L.; Bonfield, D.G.; Rawlings, S.; Jarvis, M.J.; Barr, J.M.; Foucaud, S.; ... Watson, M.G.; + view all Van Breukelen, C.; Clewley, L.; Bonfield, D.G.; Rawlings, S.; Jarvis, M.J.; Barr, J.M.; Foucaud, S.; Almaini, O.; Cirasuolo, M.; Dalton, G.; Dunlop, J.S.; Edge, A.C.; Hirst, P.; McLure, R.J.; Page, M.J.; Sekiguchi, K.; Simpson, C.; Smail, I.; Watson, M.G.; - view fewer (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.

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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.

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