Correlations in the matter distribution in CLASH galaxy clusters
文献类型：期刊论文
| 作者 | Del Popolo, Antonino1,2; Le Delliou, Morgan3,4; Lee, Xiguo5 |
| 刊名 | PHYSICS OF THE DARK UNIVERSE
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 26页码:15 |
| ISSN号 | 2212-6864 |
| 关键词 | Galaxy clusters Galaxy formation Weak gravitational lensing |
| DOI | 10.1016/j.dark.2019.100342 |
| 通讯作者 | Le Delliou, Morgan() |
| 英文摘要 | We study the total and dark matter (DM) density profiles as well as their correlations for a sample of 15 high-mass galaxy clusters by extending our previous work on several clusters from Newman et al. Our analysis focuses on 15 CLASH X-ray-selected clusters that have high-quality weak- and strong-lensing measurements from combined Subaru and Hubble Space Telescope observations. The total density profiles derived from lensing are interpreted based on the two-phase scenario of cluster formation. In this context, the brightest cluster galaxy (BCG) forms in the first dissipative phase, followed by a dissipationless phase where baryonic physics flattens the inner DM distribution. This results in the formation of clusters with modified DM distribution and several correlations between characteristic quantities of the clusters. We find that the central DM density profiles of the clusters are strongly influenced by baryonic physics as found in our earlier work. The inner slope of the DM density for the CLASH clusters is found to be flatter than the Navarro-Frenk-White profile, ranging from alpha = 0.30 to 0.79. We examine correlations of the DM density slope a with the effective radius R-e and stellar mass Me of the BCG, finding that these quantities are anti-correlated with a Spearman correlation coefficient of similar to -0.6. We also study the correlation between Re and the cluster halo mass M-500, and the correlation between the total masses inside 5 kpc and 100 kpc. We find that these quantities are correlated with Spearman coefficients of 0.68 and 0.64, respectively. These observed correlations are in support of the physical picture proposed by Newman et al. (C) 2019 Published by Elsevier B.V. |
| WOS关键词 | COLD DARK-MATTER ; ACTIVE GALACTIC NUCLEI ; ANGULAR-MOMENTUM ; DENSITY-PROFILE ; COSMOLOGICAL SIMULATIONS ; SECONDARY INFALL ; DWARF GALAXIES ; BLACK-HOLES ; MILKY-WAY ; ADIABATIC CONTRACTION |
| 资助项目 | Chinese Academy of Sciences ; President's International Fellowship Initiative[2017 VMA0044] ; Lanzhou University |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000499696200009 |
| 资助机构 | Chinese Academy of Sciences ; President's International Fellowship Initiative ; Lanzhou University |
| 源URL | [http://119.78.100.186/handle/113462/141256]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Le Delliou, Morgan |
| 作者单位 | 1.Univ Catania, Dipartimento Fis & Astron, Via S Sofia,64, I-95123 Catania, Italy 2.INFN, Sez Catania, Via S Sofia 64, I-95123 Catania, Italy 3.Lanzhou Univ, Sch Phys Sci & Technol, Inst Theoret Phys, 222,South Tianshui Rd, Lanzhou 730000, Gansu, Peoples R China 4.Univ Lisbon, Fac Ciencias, Inst Astrofis & Ciencias Espaco, Ed C8, P-1769016 Lisbon, Portugal 5.Chinese Acad Sci, Inst Modern Phys, POB 31, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Del Popolo, Antonino,Le Delliou, Morgan,Lee, Xiguo. Correlations in the matter distribution in CLASH galaxy clusters[J]. PHYSICS OF THE DARK UNIVERSE,2019,26:15. |
| APA | Del Popolo, Antonino,Le Delliou, Morgan,&Lee, Xiguo.(2019).Correlations in the matter distribution in CLASH galaxy clusters.PHYSICS OF THE DARK UNIVERSE,26,15. |
| MLA | Del Popolo, Antonino,et al."Correlations in the matter distribution in CLASH galaxy clusters".PHYSICS OF THE DARK UNIVERSE 26(2019):15. |
入库方式： OAI收割
来源：近代物理研究所
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