Statistics of X-ray observables for the cooling-core and non-cooling core galaxy clusters
Chen Y(陈勇); Chen, Y; Reiprich, TH; Bohringer, H; Ikebe, Y; Zhang, YY
刊名ASTRONOMY & ASTROPHYSICS
2007
卷号466期号:3页码:805-U28
关键词galaxies : clusters : general galaxies : intergalactic medium X-ray : galaxies : clusters
学科分类Astronomy & Astrophysics
DOI10.1051/004-6361:20066471
通讯作者Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China ; Max Planck Inst Extraterr Phys, D-85748 Garching, Germany ; Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany ; Natl Museum Emerging Sci & Innovat, Tokyo 1350064, Japan
文章类型Article
英文摘要We present a statistical study of the occurrence and effects of the cooling cores in the clusters of galaxies in a flux-limited sample, HIFLUGCS, based on ROSAT and ASCA observations. About 49% of the clusters in this sample have a significant, classically-calculated cooling-flow, mass-deposition rate. The upper envelope of the derived mass-deposition rate is roughly proportional to the cluster mass, and the fraction of cooling core clusters is found to decrease with it. The cooling core clusters are found to have smaller core radii than non-cooling core clusters, while some non-cooling core clusters have high beta values (> 0.8). In the relation of the X-ray luminosity vs. the temperature and the mass, the cooling core clusters show a significantly higher normalization. A systematic correlation analysis, also involving relations of the gas mass and the total infrared luminosity, indicates that this bias is shown to be mostly due to an enhanced X-ray luminosity for cooling core clusters, while the other parameters, like temperature, mass, and gas mass may be less affected by the occurrence of a cooling core. These results may be explained by at least some of the non-cooling core clusters being in dynamically young states compared with cooling core clusters, and they may turn into cooling core clusters in a later evolutionary stage.
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
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语种英语
WOS记录号WOS:000246007400002
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被引频次:154[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238525
专题中国科学院高能物理研究所_粒子天体物理中心_期刊论文
作者单位中国科学院高能物理研究所
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Chen Y,Chen, Y,Reiprich, TH,et al. Statistics of X-ray observables for the cooling-core and non-cooling core galaxy clusters[J]. ASTRONOMY & ASTROPHYSICS,2007,466(3):805-U28.
APA 陈勇,Chen, Y,Reiprich, TH,Bohringer, H,Ikebe, Y,&Zhang, YY.(2007).Statistics of X-ray observables for the cooling-core and non-cooling core galaxy clusters.ASTRONOMY & ASTROPHYSICS,466(3),805-U28.
MLA 陈勇,et al."Statistics of X-ray observables for the cooling-core and non-cooling core galaxy clusters".ASTRONOMY & ASTROPHYSICS 466.3(2007):805-U28.
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