The galaxy cluster Abell 3581 as seen by Chandra

被引：33
|
作者：
Johnstone, RM
Fabian, AC
Morris, RG
Taylor, GB
机构：
[1] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England
[2] Natl Radio Astron Observ, Socorro, NM 87801 USA
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2005年 / 356卷 / 01期
关键词：
galaxies : clusters : general; galaxies : clusters : individual : Abell 3581; intergalactic medium; X-rays : galaxies : clusters;
D O I：
10.1111/j.1365-2966.2004.08445.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present results from an analysis of a Chandra observation of the cluster of galaxies Abell 3581. We discover the presence of a point-source in the central dominant galaxy that is coincident with the core of the radio source PKS 1404-267. The emission from the intracluster medium is analysed, both as seen in projection on the sky, and after correcting for projection effects, to determine the spatial distribution of gas temperature, density and metallicity. We find that the cluster, despite hosting a moderately powerful radio source, shows a temperature decline to around 0.4 T-max within the central 5 kpc. The cluster is notable for the low entropy within its core. We test and validate the XSPEC PROJCT model for determining the intrinsic cluster gas properties.
引用
收藏
页码：237 / 246
页数：10
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