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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field
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Multiwavelength study of X-ray luminous clusters in the Hyper Suprime-Cam Subaru Strategic Program S16A field

机译：超级型凸轮副战略计划S16A场中X射线发光簇的多波长研究

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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 f(gas) = 0.125 +/- 0.012 at spherical overdensity Delta = 500, which is similar to 80%-90% 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-lensingmasses, 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.
机译：我们为来自MCXC的X射线发光星系簇提供联合X射线，光学和弱镜头分析（在超级Suprime-CAM Subaru战略计划中的MCXC（X射线检测到的星系簇的簇的Meta-Realog）集群目录（HSC-SSP）S60A数据的调查字段。作为一系列论文的试验研究，我们使用XMM-Newton数据测量静电平衡（HE）群体，用于在22个MCXC集群的样本中的当前覆盖区域中的四个集群中的四个集群。我们还在分析与一个MCXC群集关联的非MCXC群集。我们表明MCXC集群的群众与Camira目录中的集群丰富性相关，而非MCXC群集偏离缩放关系。聚类丰富性和HE质量之间的关系的质量正常化与通过将CAMIRA集群丰富与理论晕符号函数匹配的人兼容。基于HE的MCXC簇的肿块的平均气体质量分数是＆ F（气体）＆球面过度增长的δ= 500处的0.125 +/- 0.012，其类似于宇宙微波背景实验测量的宇宙平均骨折部分的80％-90％，ω（b）/ω（m）。我们发现，由X射线和HSC-SSP光学数据估计的平均骨折部分与Omega（B）/ Omega（M）相当。与光度红移相结合的背景星系的弱镜头剪切目录目前仅适用于我们样本中的三个集群。静水平衡质量大致与弱透镜相同，尽管具有大的不确定性。本研究表明，使用X射线，HSC-SSP光学和弱镜头数据的大型集群样本的进一步多波长研究将使我们能够理解群集物理并利用基于群集的宇宙学。

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