2004MNRAS.352..605B

Query : 2004MNRAS.352..605B

2004MNRAS.352..605B - Mon. Not. R. Astron. Soc., 352, 605-654 (2004/August-1)

Substructure analysis of selected low-richness 2dFGRS clusters of galaxies.

BURGETT W.S., VICK M.M., DAVIS D.S., COLLESS M., DE PROPRIS R., BALDRY I., BAUGH C., BLAND-HAWTHORN J., BRIDGES T., CANNON R., COLE S., COLLINS C., COUCH W., CROSS N., DALTON G., DRIVER S., EFSTATHIOU G., ELLIS R., FRENK C.S., GLAZEBROOK K., HAWKINS E., JACKSON C., LAHAV O., LEWIS I., LUMSDEN S., MADDOX S., MADGWICK D., NORBERG P., PEACOCK J.A., PERCIVAL W., PETERSON B., SUTHERLAND W. and TAYLOR K.

Abstract (from CDS):

Complementary one-, two- and three-dimensional tests for detecting the presence of substructure in clusters of galaxies are applied to recently obtained data from the 2dF Galaxy Redshift Survey. The sample of 25 clusters used in this study includes 16 clusters not previously investigated for substructure. Substructure is detected at or greater than the 99 per cent confidence level in at least one test for 21 of the 25 clusters studied here. From the results, it appears that low-richness clusters commonly contain subclusters participating in mergers. About half of the clusters have two or more components within 0.5h–1Mpc of the cluster centroid, and at least three clusters (Abell 1139, Abell 1663 and Abell S333) exhibit velocity-position characteristics consistent with the presence of possible cluster rotation, shear, or infall dynamics. The geometry of certain features is consistent with influence by the host supercluster environments. In general, our results support the hypothesis that low-richness clusters relax to structureless equilibrium states on very long dynamical time-scales (if at all).

Abstract Copyright: 2004 RAS

Journal keyword(s): galaxies: clusters: general - large-scale structure of Universe

Simbad objects: 27

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Number of rows : 27
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 ACO 2734 ClG 00 11 21.60 -28 51 16.6           ~ 156 0
2 EDCC 442 ClG 00 25 31.36 -33 02 47.7           ~ 19 0
3 ACO 2814 ClG 00 42 08.82 -28 32 08.8           ~ 15 0
4 ACO S 141 ClG 01 13 53.2 -31 44 21           ~ 20 0
5 ACO S 258 ClG 02 25 44.44 -29 36 57.5           ~ 9 0
6 APMCC 268 ClG 02 29 25.1 -33 50 02           ~ 5 0
7 ACO 3027 ClG 02 30 49.41 -33 06 11.7           ~ 23 0
8 ACO S 301 ClG 02 49 33.72 -31 11 23.2           ~ 70 2
9 ACO 3094 ClG 03 11 25.00 -26 55 52.2           ~ 64 0
10 ACO S 333 ClG 03 15 09.95 -29 14 37.4           ~ 17 0
11 ACO 930 ClG 10 07 01.32 -05 37 28.7           ~ 30 0
12 ACO 957 ClG 10 14 02.35 -00 53 30.0           ~ 225 2
13 ACO 1139 ClG 10 58 01.63 +01 38 05.4           ~ 162 3
14 ACO 1238 ClG 11 22 05.37 +00 47 03.0           ~ 91 0
15 ACO 1620 ClG 12 50 03.89 -01 32 26.7           ~ 54 0
16 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
17 ACO 1663 ClG 13 02 52.55 -02 31 04.0           ~ 112 0
18 ACO 1750 ClG 13 30 50.44 -01 51 27.1           ~ 190 2
19 ACO 3880 ClG 22 27 49.5 -30 34 40           ~ 104 2
20 ACO S 1043 ClG 22 36 27.96 -24 20 30.8           ~ 14 0
21 ACO 4012 ClG 23 31 45 -33 49.4           ~ 10 0
22 ACO 4013 ClG 23 31 51 -35 16.4           ~ 10 0
23 APMCC 917 ClG 23 41 33.4 -29 09 12           ~ 19 0
24 ACO 4038 ClG 23 47 31.1 -28 12 10           ~ 349 3
25 * del Scl PM* 23 48 55.5462353347 -28 07 48.976490953 4.55 4.58 4.57 4.53 4.55 A0VankB9((_lB)) 149 0
26 EDCC 365 ClG 23 55 08.43 -32 44 25.6           ~ 9 0
27 APMCC 933 ClG 23 56 27.66 -34 35 35.0           ~ 5 0

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