2006PASJ...58..131F

Query : 2006PASJ...58..131F

2006PASJ...58..131F - Publ. Astron. Soc. Jap., 58, 131-141 (2006/February-0)

Chandra observations of A 2670 and A 2107: a comet galaxy and cDs with large peculiar velocities.

FUJITA Y., SARAZIN C.L. and SIVAKOFF G.R.

Abstract (from CDS):

begin{HTML} We present an analysis of Chandra observations of the galaxy clusters A 2670 and A 2107. Their cD galaxies have large peculiar velocities (>200 km s<sup>-1</sup>) and thus the clusters appear to be undergoing mergers. In A 2670, we find a comet-like structure around one of the brightest galaxies. At the leading edge of the structure, there is a cold front. The mass of the X-ray gas in the comet-like structure suggests that the galaxy was in a small cluster or group, and its intracluster medium is being stripped by ram-pressure. The regions of cool interstellar medium of the cD galaxies in A 2670 and A 2107 are very compact. This is similar to the brightest galaxies in the Coma cluster, which is also a merging cluster. In each galaxy, the short cooling time of the ISM requires a heating source; the compact nature of the ISM makes it unlikely that the heating source is a central active galactic nucleus.

Abstract Copyright: ∼

Journal keyword(s): cooling flows - galaxies: clusters: general - galaxies: clusters: individual: (Abell 2107, Abell 2670) - intergalactic medium - X-rays: galaxies: clusters

Simbad objects: 19

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Number of rows : 19
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 2A 0251+413 ClG 02 54 26.6 +41 33 25           ~ 328 1
2 ZwCl 0335+0956 ClG 03 38 35.3 +09 57 54           ~ 402 1
3 NGC 4874 LIN 12 59 35.7093764280 +27 57 33.293892204 13.01 13.7 12.71 12.27 11.386 ~ 814 3
4 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
5 NGC 4889 EmG 13 00 08.097 +27 58 37.29 12.93 13.0 11.30 11.652 10.906 ~ 742 1
6 ACO 2052 ClG 15 16 41.64 +07 01 45.5           ~ 756 1
7 ACO 2107 ClG 15 39 39.04 +21 46 57.8           ~ 270 0
8 ACO 2125 ClG 15 41 14.1 +66 15 57           ~ 124 1
9 ACO 2199 ClG 16 28 34.5 +39 32 26           ~ 1206 1
10 [B94] Clump C ClG 23 54 04 -10 24.3           ~ 3 0
11 [B94] Clump D ClG 23 54 05 -10 10.7           ~ 3 0
12 2MASXI J2354070-102516 GiC 23 54 07.0310971152 -10 25 16.758946128           ~ 8 0
13 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 364 0
14 SDSSCGA 3 CGG 23 54 13.5 -10 23 17           ~ 6 0
15 2MASX J23541371-1025084 LIN 23 54 13.6827414192 -10 25 08.481024912   15.32       ~ 55 2
16 [B94] Clump A ClG 23 54 20 -10 21.6           ~ 3 0
17 [HW97b] 1 G ~ ~           ~ 3 0
18 [HW97b] 3 G ~ ~           ~ 3 0
19 [HW97b] 2 X ~ ~           ~ 3 0

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