X-ray observations of the southern cluster CA 0340 – 538 and the Horologium supercluster
X-ray observations of the southern cluster CA 0340 – 538 and the Horologium supercluster
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DOI：
10.1093/mnras/203.2.253
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发表时间：
1983-06
影响因子：
4.8
通讯作者：
W. Ku;F. Abramopoulos;P. Nulsen;A. Fabian;G. Stewart;G. Chincarini;M. Tarenghi
中科院分区：
文献类型：
--
作者：
W. Ku;F. Abramopoulos;P. Nulsen;A. Fabian;G. Stewart;G. Chincarini;M. Tarenghi
X-ray observations of the Horologium supercluster are examined. Results show that the optically Coma-like cluster CA 0340-538 has a smooth X-ray structure which also resembles that of Coma. The density structure of its X-ray emitting gas, determined in a model-independent way, is found to be remarkably featureless, being consistent with a nearly isothermal polytrope out to approximately 2 Mpc from the cluster center. The total mass of the gas is determined to exceed 10% of the cluster virial mass and may contribute a substantial fraction of the cluster binding mass. Although CA 0329-527 is found to be an X-ray double cluster, its structure appears to be confused. CA 0325-539 is found to show no substantial X-ray emission. An upper limit of 1.3 x 10 to the 44th erg/s is determined for any diffuse 2-10 keV emission from the Horologium supercluster.
