http://arxiv.org/abs/2204.11215
Using photometric data from the Dark Energy Survey and the Wide-field Infrared Survey Explorer, we estimate photometric redshifts for 105 million galaxies using the nearest-neighbour algorithm. From such a large database, 151,244 clusters of galaxies are identified in the redshift range of 0.1<z<1.5 based on the overdensity of the total stellar mass of galaxies within a given photometric redshift slice, among which 76,826 clusters are newly identified and 30,477 clusters have a redshift z>1. We cross-match these clusters with those in the catalogues identified from the X-ray surveys and the Sunyaev-Zel’dovich (SZ) effect by the Planck, South Pole Telescope and Atacama Cosmology Telescope surveys, and get the redshifts for 45 X-ray clusters and 56 SZ clusters. More than 95% SZ clusters in the sky region have counterparts in our catalogue. We find multiple optical clusters in the line of sight towards about 15% of SZ clusters.
Z. Wen and J. Han
Tue, 26 Apr 22
4/74
Comments: 14 pages, 15 figures, 4 tables, accepted for publication in MNRAS
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