The mass distribution in the galaxy cluster Abell 2744

被引：4
|
作者：
Babyk, Iu. [1 ]
Elyiv, A. [2 ,3 ]
Melnyk, O. [3 ,4 ]
Krivodubskij, V. N. [4 ]
机构：
[1] Taras Shevchenko Natl Univ Kyiv, Fac Phys, UA-03127 Kiev, Ukraine
[2] NAS Ukraine, Main Astron Observ, UA-03680 Kiev, Ukraine
[3] Inst Astrophys & Geophys, Liege, Belgium
[4] Taras Shevchenko Natl Univ Kyiv, Astron Observ, UA-04053 Kiev, Ukraine
来源：
KINEMATICS AND PHYSICS OF CELESTIAL BODIES | 2012年 / 28卷 / 02期
关键词：
cluster of galaxies; intracluster gas; profile Navarro-Frank-White; dark matter; XMM-NEWTON OBSERVATION; GAS PROPERTIES; DARK; PROFILE;
D O I：
10.3103/S0884591312020031
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
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 (M (200) = 2.22 (-0.12) (+0.13) x 10(15) M (aS (TM))) for the radius R (200) = 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.
引用
收藏
页码：69 / 76
页数：8
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