The WaZP galaxy cluster sample of the dark energy survey year 1

ABSTRACT We present a new (2+1)D galaxy cluster finder based on photometric redshifts called Wavelet Z Photometric (WaZP) applied to DES first year (Y1A1) data. The results are compared clusters detected by the South Pole Telescope (SPT) survey and redMaPPer finder, latter same WaZP searches for in wavelet-based density maps of galaxies selected redshift space without any assumption populations. comparison other samples was performed with matching algorithm angular proximity difference clusters. It led development approach match two optical samples, following an iterative minimize incorrect associations. Y1A1 (1511.13 deg2 up mi = 23 mag) detection 60 547 0.05 < z 0.9 richness Ngals ? 5. Considering overlapping regions ranges between SPT surveys, all sz recovered sample. showed excellent overall agreement (? redMaPPer) greater than 25 (20), 95 per cent recovery both directions. Based cross-match, we explore relative fragmentation investigate possible signatures unmatched