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*?～?1010.2?M⊙ even at z?～?1, allowing a reliable cluster detection at such high redshifts. We apply the CAMIRA algorithm to the HSC Wide S16A dataset covering ～232?deg2 to construct a catalog of 1921 clusters at redshift 0.1??z??1.1 and richness |${skew7hat{N}}_{m mem}15$| that roughly corresponds to M200m ? 1014?h?1?M⊙. We confirm good cluster photometric redshift performance, with the bias and the scatter in Δz/(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.