A deprojection analysis of Abell 1650 with XMM-Newton
Jia SM(贾淑梅); Chen Y(陈垚); Jia, SM; Chen, Y; Chen, L
刊名CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
2006
卷号6期号:2页码:#REF!
关键词galaxies : clusters : individual : Abell 1650 galaxies : cooling flows galaxies : evolution galaxies : intergalactic medium X-rays : galaxies : clusters
学科分类Astronomy & Astrophysics
DOI10.1088/1009-9271/6/2/6
通讯作者Jia, SM (reprint author), Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China.
文章类型Article
英文摘要We revisit the XMM-Newton observation of the galaxy cluster Abell 1650 with a deprojection technique. We find that the radial deprojected spectra of Abell 1650 can be marginally fitted by a single-temperature model. In order to study the properties of the central gas, we fit the spectra of the central two regions with a two-temperature model. The fits then become significantly better and the cool gas about 1 similar to 2 keV can be connected with the gas cooling. Fitting the central spectrum (r <= 1') by using a cooling flow model with an isothermal component yields a small mass deposition rate of 10(-7)(+11) M. yr(-1), while the standard cooling flow model can not fit this spectrum satisfactorily except that there exists a cut-off temperature having a level of about 3 keV. From the isothermal model we derive the deprojected electron density profile n(e)(r), and then together with the deprojected temperature profile the total mass and gas mass fraction of cluster are also determined. We compare the properties of Abell 1650 with those of Abell 1835 (a large cooling flow cluster) and some other clusters, to explore the difference in properties between large And small cooling flow cluster, and what causes the difference in the cooling flow of different clusters. It has been shown that Abell 1835 has a steeper potential well and thus a higher electron density and a lower temperature in its center, indicating that the shape of the gravitational potential well in central region determines the cooling flow rates of clusters. We calculate the potential, internal and radiated energies of these two clusters, and find that the gas energies in both clusters are conserved during the collapsing stage.
类目[WOS]Astronomy & Astrophysics
收录类别SCI
WOS记录号WOS:000237087700006
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被引频次:7[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/311005/226742
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
中国科学院高能物理研究所_粒子天体物理中心
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Jia SM,Chen Y,Jia, SM,et al. A deprojection analysis of Abell 1650 with XMM-Newton[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2006,6(2):#REF!.
APA 贾淑梅,陈垚,Jia, SM,Chen, Y,&Chen, L.(2006).A deprojection analysis of Abell 1650 with XMM-Newton.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,6(2),#REF!.
MLA 贾淑梅,et al."A deprojection analysis of Abell 1650 with XMM-Newton".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 6.2(2006):#REF!.
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