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∗∼1010.2M⊙ 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 N^mem>15 that roughly corresponds to M200m≳1014h−1M⊙. We confirm good cluster photometric redshift performance, with the bias and scatter in Δz/(1+z) being better than 0.005 and 0.01 over most of the redshift range, respectively. We compare our cluster catalog with large X-ray cluster catalogs from XXL and XMM-LSS surveys and find good correlation between richness and X-ray properties. We also study the miscentering 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.
@article{arxiv.1701.00818,
title = {An optically-selected cluster catalog at redshift 0.1<z<1.1 from the Hyper Suprime-Cam Subaru Strategic Program S16A data},
author = {Masamune Oguri and Yen-Ting Lin and Sheng-Chieh Lin and Atsushi J. Nishizawa and Anupreeta More and Surhud More and Bau-Ching Hsieh and Elinor Medezinski and Hironao Miyatake and Hung-Yu Jian and Lihwai Lin and Masahiro Takada and Nobuhiro Okabe and Joshua S. Speagle and Jean Coupon and Alexie Leauthaud and Robert H. Lupton and Satoshi Miyazaki and Paul A. Price and Masayuki Tanaka and I-Non Chiu and Yutaka Komiyama and Yuki Okura and Manobu M. Tanaka and Tomonori Usuda},
journal= {arXiv preprint arXiv:1701.00818},
year = {2018}
}
Comments
18 pages, 18 figures, accepted for publication in PASJ; cluster catalogs are available at http://www.slac.stanford.edu/~oguri/cluster/