An optically-selected cluster catalog at redshift 0.1 z 1.1 from the Hyper Suprime-Cam Subaru Strategic Program S16A data

摘要

We present an optically-selected cluster catalog from the Hyper Suprime-Cam (HSC) Subaru Strategic Program. The HSC images are sufficiently deep to detect cluster member galaxies down to M-* similar to 10(10.2) M-circle dot even at z similar to 1, allowing a reliable cluster detection at such high redshifts. We apply the CAMIRA algorithm to the HSC Wide S16A dataset covering similar to 232 deg(2) to construct a catalog of 1921 clusters at redshift 0.1 z 1.1 and richness (N) over cap (mem) 15 that roughly corresponds to M-200m greater than or similar to 10(14) h(-1) M-circle dot. We confirm good cluster photometric redshift performance, with the bias and the scatter in Delta z/(1 + z) being better than 0.005 and 0.01, respectively, over most of the redshift range. We compare our cluster catalog with large X-ray cluster catalogs from the XXL and XMM-LSS (the XMM Large Scale Structure) surveys and find good correlation between richness and X-ray properties. We also study the mis-centering effect from the distribution of offsets between optical and X-ray cluster centers. We confirm the high ( 0.9) completeness and purity for high-mass clusters by analyzing mock galaxy catalogs.