The mass distribution in the galaxy cluster Abell 2744

被引：0
|
作者：
Iu. Babyk
A. Elyiv
O. Melnyk
V. N. Krivodubskij
机构：
[1] Faculty of Physics of the Taras Shevchenko National University of Kyiv,
[2] Main Astronomical Observatory of NAS of Ukraine,undefined
[3] Institut d’Astrophysique et de Geophysique,undefined
[4] Astronomical Observatory of the Taras Shevchenko National University of Kyiv,undefined
来源：
Kinematics and Physics of Celestial Bodies | 2012年 / 28卷
关键词：
cluster of galaxies; intracluster gas; profile Navarro-Frank-White; dark matter;
D O I：
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摘要：
The mass distribution for the galaxy cluster Abell 2744 (z = 0.308) is investigated on the base of the archival X-ray data of the Chandra observatory. The temperature of the hot gas in the cluster (kT = 9.82−0.41+0.43 keV) and the cluster total mass (M200 = 2.22−0.12+0.13 × 1015M⊙) for the radius R200 = 2.38−0.31+0.36 Mpc are estimated. The density and mass profiles for the intergalactic gas and dark matter are obtained. The fractions of the intergalactic gas and dark matter in the total mass of the cluster are 15.4−1.3+1.3% and 84.6−1.3+1.4%, respectively.
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页码：69 / 76
页数：7
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