Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field
Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field
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DOI：
10.1093/pasj/psx132
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发表时间：
2017-05
影响因子：
2.3
通讯作者：
Keita Miyaoka;N. Okabe;T. Kitaguchi;M. Oguri;Y. Fukazawa;R. Mandelbaum;E. Medezinski;Y. Babazaki;A. Nishizawa;T. Hamana;Yen-Ting Lin;H. Akamatsu;I. Chiu;Y. Fujita;Y. Ichinohe;Y. Komiyama;T. Sasaki;M. Takizawa;S. Ueda;K. Umetsu;J. Coupon;C. Hikage;A. Hoshino;A. Leauthaud;K. Matsushita;I. Mitsuishi;H. Miyatake;S. Miyazaki;S. More;K. Nakazawa;N. Ota;Kousuke Sato;D. Spergel;T. Tamura;Masayuki Tanaka;Manobu M. Tanaka;Y. Utsumi
中科院分区：
文献类型：
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作者：
Keita Miyaoka;N. Okabe;T. Kitaguchi;M. Oguri;Y. Fukazawa;R. Mandelbaum;E. Medezinski;Y. Babazaki;A. Nishizawa;T. Hamana;Yen-Ting Lin;H. Akamatsu;I. Chiu;Y. Fujita;Y. Ichinohe;Y. Komiyama;T. Sasaki;M. Takizawa;S. Ueda;K. Umetsu;J. Coupon;C. Hikage;A. Hoshino;A. Leauthaud;K. Matsushita;I. Mitsuishi;H. Miyatake;S. Miyazaki;S. More;K. Nakazawa;N. Ota;Kousuke Sato;D. Spergel;T. Tamura;Masayuki Tanaka;Manobu M. Tanaka;Y. Utsumi
本文利用S16 A数据，对超Suprime-Cam Subaru战略计划（HSC-SSP）观测场的MCXC（Meta-Catalog of X-Ray Detected Clusters of Galaxies）星系团进行了X射线、光学和弱透镜联合分析。质量使用XMM-牛顿数据的四个集群在当前覆盖区域的样本的22 MCXC集群。我们还分析了与一个MCXC集群相关的非MCXC集群。我们证明了H.E. MCXC星系团的质量与CAMIRA目录中的星系团丰富度相关（Oguri et al. 2017），而非MCXC星系团的质量则偏离了标度关系。用质量归一化法研究了团簇丰富度与H.E.质量是兼容的一个通过匹配CAMIRA集群丰度与理论晕质量函数推断。基于H.E. MCXC星系团的质量为$\langle f_{\rm gas} \rangle = 0.125\pm0.012$，球密度$\Delta=500$，是宇宙微波背景实验测量的宇宙平均重子分数$\Omega_B/\Omega_m$的80 -90$ %.我们发现由X射线和HSC-SSP光学数据估算的平均重子分数与$\Omega_B/\Omega_m$相当。一个弱透镜剪切目录的背景星系，结合光度红移，目前只有三个集群在我们的样本。流体静力学平衡质量大致同意弱透镜质量，尽管有很大的不确定性。这项研究表明，进一步的多波长研究的大样本的集群使用X射线，HSC-SSP光学和弱透镜数据将使我们能够了解集群物理和利用集群为基础的宇宙学。
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 of our planned series papers, we measure hydrostatic equilibrium (H.E.) 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 H.E. masses for the MCXC clusters are correlated with cluster richness from the CAMIRA catalog (Oguri et al. 2017), while that for the non-MCXC cluster deviates from the scaling relation. The mass normalization of the relationship between the cluster richness and H.E. mass is compatible with one inferred by matching CAMIRA cluster abundance with a theoretical halo mass function. The mean gas mass fraction based on H.E. masses for the MCXC clusters is $\langle f_{\rm gas} \rangle = 0.125\pm0.012$ at spherical overdensity $\Delta=500$, which is $\sim80-90$ percent of the cosmic mean baryon fraction, $\Omega_b/\Omega_m$, 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 $\Omega_b/\Omega_m$. 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.