ROSAT PSPC observations of Abell 3667

被引:33
作者
Knopp, GP [1 ]
Henry, JP [1 ]
Briel, UG [1 ]
机构
[1] MAX PLANCK INST EXTRATERR PHYS, D-85740 GARCHING, GERMANY
关键词
galaxies; clusters; individual; (Abell; 3667); X-rays;
D O I
10.1086/178047
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We have examined the X-ray morphology of A3667 and its relation to the galaxy distribution. The X-ray isophotes of A3667 are very flattened in the center of the cluster and gradually become consistent with circularity at the lowest levels detectable. There is significant X-ray emission associated with a group of galaxies around the second brightest cluster member. The X-ray morphology of this emission indicates that this group is merging with the cluster. The average temperature we measure for the cluster, 6.3(-0.6)(+0.5) keV, agrees well with previous measurements. The azimuthally averaged radial temperature distribution shows that A3667 is not isothermal, likely having a hotter core.
引用
收藏
页码:125 / 130
页数:6
相关论文
共 36 条
[1]   X-RAY CLUSTERS OF GALAXIES - CORRELATIONS WITH OPTICAL MORPHOLOGY AND GALAXY DENSITY [J].
BAHCALL, NA .
ASTROPHYSICAL JOURNAL, 1977, 217 (02) :L77-L82
[2]  
Bell Burnell S. J., 1984, Astronomy & Astrophysics Supplement Series, V56, P415
[3]   AN X-RAY TEMPERATURE MAP OF THE MERGING GALAXY CLUSTER A2256 [J].
BRIEL, UG ;
HENRY, JP .
NATURE, 1994, 372 (6505) :439-441
[4]  
BRIEL UG, 1991, ASTRON ASTROPHYS, V246, pL10
[5]  
BRIEL UG, 1992, ASTRON ASTROPHYS, V259, pL31
[6]   X-RAY CONSTRAINTS ON THE SHAPE OF THE DARK MATTER IN 5 ABELL CLUSTERS [J].
BUOTE, DA ;
CANIZARES, CR .
ASTROPHYSICAL JOURNAL, 1992, 400 (02) :385-397
[7]   THE COMA CLUSTER AFTER LUNCH - HAS A GALAXY GROUP PASSED THROUGH THE CLUSTER CORE [J].
BURNS, JO ;
ROETTIGER, K ;
LEDLOW, M ;
KLYPIN, A .
ASTROPHYSICAL JOURNAL, 1994, 427 (02) :L87-L90
[8]   EVIDENCE FOR AN ON-GOING CLUSTER GROUP MERGER IN ABELL-2255 [J].
BURNS, JO ;
ROETTIGER, K ;
PINKNEY, J ;
PERLEY, RA ;
OWEN, FN ;
VOGES, W .
ASTROPHYSICAL JOURNAL, 1995, 446 (02) :583-593
[9]   X-RAY SUBSTRUCTURE IN A1656 AND A2256 [J].
DAVIS, DS ;
MUSHOTZKY, RF .
ASTRONOMICAL JOURNAL, 1993, 105 (02) :409-416
[10]   PROPERTIES OF COOLING FLOWS IN A FLUX-LIMITED SAMPLE OF CLUSTERS OF GALAXIES [J].
EDGE, AC ;
STEWART, GC ;
FABIAN, AC .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1992, 258 (01) :177-188