Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field

PASJ: Publications of the Astronomical Society of Japan

Mandelbaum, Rachel¹  Oguri, Masamune¹  Akamatsu, Hiroki¹  Sato, Kousuke²  More, Surhud³  Fujita, Yutaka⁴  Coupon, Jean⁵  Fukazawa, Yasushi⁶  Okabe, Nobuhiro⁶  Miyaoka, Keita⁶  Hamana, Takashi⁶  Ichinohe, Yuto⁷  Tamura, Takayuki⁷  Ota, Naomi⁸  Babazaki, Yasunori⁹  Hikage, Chiaki^1,10  Matsushita, Kyoko^1,11  Spergel, David^1,11  Mitsuishi, Ikuyuki^1,12  Kitaguchi, Takao^1,13  Lin, Yen-Ting^1,13  Komiyama, Yutaka^1,14  Miyazaki, Satoshi^1,15  Umetsu, Keiichi^1,15  Takizawa, Motokazu^1,15  Miyatake, Hironao^1,16  Tanaka, Manobu M^1,17  Nishizawa, Atsushi J^1,18  Nakazawa, Kazuhiro^1,18  Tanaka, Masayuki^1,18  Chiu, I-Non^1,19  Hoshino, Akio^2,20  Utsumi, Yousuke^2,20  Sasaki, Toru^2,20  Medezinski, Elinor^2,21  Ueda, Shutaro^2,22  Leauthaud, Alexie^2,23 

[1] Core Research for Energetic Universe, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan;Department of Astronomy and Astrophysics, University of California Santa Cruz, Santa Cruz, CA 95064, USA;Department of Astronomy, University of Geneva, ch. dÉcogia 16, 1290 Versoix, Switzerland;Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, USA;Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan;Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan;Department of Physics, Nagoya University, Aichi 464-8602, Japan;Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan;Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;Department of Physics, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan;Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjyuku-ku, Tokyo 162-8601, Japan;Department of Physics, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata, Yamagata 990-8560, Japan;Hiroshima Astrophysical Science Center, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan;Institute for Advanced Research, Nagoya University, Furocho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan;Institute of Astronomy and Astrophysics, Academia Sinica, PO Box 23-141, Taipei 10617, Taiwan;Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 229-8510, Japan;Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, CA 91109, USA;Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI), University of Tokyo, Chiba 277-8582, Japan;McWilliams Center for Cosmology, Department of Physics, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, PA 15213, USA;National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan;Research Center for the Early Universe, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan;SRON Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands;The Graduate University for Advanced Studies, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan

关键词: galaxies: clusters: intracluster medium;    galaxies: stellar content;    X-rays: galaxies: clusters;    gravitational lensing: weak;   

DOI  :  10.1093/pasj/psx132

学科分类：天文学(综合)

来源: Oxford University Press

【 摘 要 】

We present a joint X-ray, optical, and weak-lensing analysis for X-ray luminous galaxy clusters selected from the MCXC (Meta-Catalog of X-Ray Detected Clusters of Galaxies) cluster catalog in the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) survey field with S16A data. As a pilot study for a series of papers, we measure hydrostatic equilibrium (HE) masses using XMM-Newton data for four clusters in the current coverage area out of a sample of 22 MCXC clusters. We additionally analyze a non-MCXC cluster associated with one MCXC cluster. We show that HE masses for the MCXC clusters are correlated with cluster richness from the CAMIRA catalog, while that for the non-MCXC cluster deviates from the scaling relation. The mass normalization of the relationship between cluster richness and HE mass is compatible with one inferred by matching CAMIRA cluster abundance with a theoretical halo mass function. The mean gas mass fraction based on HE masses for the MCXC clusters is 〈fgas〉 = 0.125 ± 0.012 at spherical overdensity Δ = 500, which is ∼80%–90% of the cosmic mean baryon fraction, Ωb/Ωm, measured by cosmic microwave background experiments. We find that the mean baryon fraction estimated from X-ray and HSC-SSP optical data is comparable to Ωb/Ωm. A weak-lensing shear catalog of background galaxies, combined with photometric redshifts, is currently available only for three clusters in our sample. Hydrostatic equilibrium masses roughly agree with weak-lensing masses, albeit with large uncertainty. This study demonstrates that further multiwavelength study for a large sample of clusters using X-ray, HSC-SSP optical, and weak-lensing data will enable us to understand cluster physics and utilize cluster-based cosmology.

【 授权许可】

CC BY