2002A&A...386..816B

Query : 2002A&A...386..816B

2002A&A...386..816B - Astronomy and Astrophysics, volume 386, 816-828 (2002/5-2)

The dynamical status of the cluster of galaxies 1E 0657-56.

BARRENA R., BIVIANO A., RAMELLA M., FALCO E.E. and SEITZ S.

Abstract (from CDS):

We present the results of a new spectroscopic and photometric survey of the hot X-ray cluster 1E 0657-56, at z=0.296. We determine the presence of a low velocity dispersion subcluster, which is offset from the main cluster position by 0.7Mpc and ≃600km/s. We determine the virial masses and total luminosities of the cluster and its subcluster, and solve for the two-body dynamical model. With additional constraints from the results of the analysis of the cluster X-ray emission by Markevitch et al. (2002ApJ...567L..27M), we find that the subcluster passed through the cluster centre ≃0.15Gyr ago. Taken at face value the mass of the subcluster is typical of a loose group. It is however difficult to establish the pre-merger mass of the colliding system. We provide tentative evidence that the subcluster is in fact the remnant core of a moderately massive cluster, stripped by the collision with 1E 0657-56. The main cluster dynamics does not seem to have suffered from this collision. On the contrary, the cluster X-ray properties seem to have been significantly affected. We also discuss the effect of the subcluster collision in relation to starburst events and the cluster radio halo.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: 1E 0657-56 - galaxies: clusters: general - galaxies: distances and redshifts

Nomenclature: Table 1: [BBR2002] NN (Nos 1-78).

Simbad objects: 85

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Number of rows : 85
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 ClG 0021+0406 ClG 00 23 52 +04 23.1           ~ 48 0
2 [BBR2002] 1 GiC 06 57 56.0 -55 54 24           ~ 1 0
3 [BBR2002] 2 GiC 06 57 56.0 -55 55 55           ~ 1 0
4 [BBR2002] 3 GiC 06 57 57.0 -55 54 37           ~ 1 0
5 [FBC2017] J065800.3-555339.1 GiC 06 58 00.308 -55 53 39.01           ~ 4 0
6 [BBR2002] 6 GiC 06 58 08.0 -55 55 34   22.97   19.95 19.81 ~ 1 0
7 [BBR2002] 5 GiC 06 58 08.0 -55 53 36           ~ 1 0
8 [FBC2017] J065812.2-555430.0 GiC 06 58 12.209 -55 54 29.87   22.36   19.82 19.39 ~ 3 0
9 [FBC2017] J065813.9-555636.2 GiC 06 58 13.939 -55 56 36.09   21.61   18.86 17.69 ~ 3 0
10 [FBC2017] J065815.7-555600.8 GiC 06 58 15.714 -55 56 00.57   22.96   20.31 19.14 ~ 3 0
11 [FBC2017] J065815.9-555636.3 BiC 06 58 15.954 -55 56 36.20   20.43   17.95 16.59 ~ 4 0
12 [FBC2017] J065818.0-555635.7 GiC 06 58 17.9570917752 -55 56 35.472767676   21.81   18.99 17.77 ~ 3 0
13 [BBR2002] 12 GiC 06 58 18.0 -55 56 15   22.68   19.89 18.73 ~ 1 0
14 [BBR2002] 11 GiC 06 58 18.0 -55 54 59   21.88   18.87 18.33 ~ 1 0
15 [FBC2017] J065819.1-555551.6 GiC 06 58 19.066 -55 55 51.42   22.25   19.93 18.85 ~ 3 0
16 [FBC2017] J065820.2-555631.8 GiC 06 58 20.187 -55 56 31.62   22.79   20.18 19.03 ~ 3 0
17 [FBC2017] J065820.2-555555.1 GiC 06 58 20.191 -55 55 54.98   22.63   20.13 19.09 ~ 3 0
18 [FBC2017] J065820.3-555457.9 GiC 06 58 20.310 -55 54 57.79   21.89   19.63 19.06 ~ 3 0
19 [FBC2017] J065820.9-555446.1 GiC 06 58 20.884 -55 54 46.03   21.80   19.80 19.96 ~ 3 0
20 [FBC2017] J065821.5-555711.5 GiC 06 58 21.5132201640 -55 57 11.290295628   21.40   18.96 17.80 ~ 3 0
21 [BBR2002] 20 GiC 06 58 23.0 -55 54 55   21.72   19.48 18.42 ~ 1 0
22 [FBC2017] J065824.3-555628.6 GiC 06 58 24.303 -55 56 28.40   22.36   19.96 18.80 ~ 3 0
23 [BBR2002] 22 GiC 06 58 25.132 -55 56 50.90   21.79   19.27 18.09 ~ 4 0
24 [BBR2002] 68 GiC 06 58 27.0 -56 00 00   20.07   17.81 17.30 ~ 1 0
25 [FBC2017] J065827.8-555545.2 GiC 06 58 27.838 -55 55 45.04   22.25   19.89 18.66 ~ 3 0
26 [BBR2002] 25 GiC 06 58 29.0 -55 56 47   19.84   17.48 16.32 ~ 1 0
27 [BBR2002] 24 GiC 06 58 29.40 -55 55 56.2   22.08   19.89 18.87 ~ 2 0
28 ClG 0657-56 ClG 06 58 29.6 -55 56 39           ~ 963 1
29 [GSB2009] J065829.64-555604.9 GiC 06 58 29.658 -55 56 04.69   22.01   19.76 18.61 ~ 5 0
30 [BBR2002] 27 GiC 06 58 30.0 -55 57 52   22.29   19.61 18.41 ~ 1 0
31 [BBR2002] 30 GiC 06 58 31.0 -55 57 59   19.73   17.64 16.67 ~ 2 0
32 [BBR2002] 28 GiC 06 58 31.0 -55 54 38   22.71   20.28 19.12 ~ 2 0
33 [BBR2002] 29 GiC 06 58 31.20 -55 56 51.4   21.81   19.71 18.68 ~ 2 0
34 [BBR2002] 69 GiC 06 58 31.40 -55 56 03.5   21.34   19.19 18.13 ~ 2 0
35 DES J065831.91-555636.8 GiC 06 58 31.9005137016 -55 56 36.798915156   21.49   18.83 17.61 ~ 5 0
36 [BBR2002] 32 GiC 06 58 32.10 -56 00 00.8   21.09   18.82 17.77 ~ 2 0
37 [FBC2017] J065832.4-555546.9 GiC 06 58 32.422 -55 55 46.69   22.52   20.17 19.03 ~ 3 0
38 [FBC2017] J065833.0-555635.2 GiC 06 58 32.9984419776 -55 56 35.020311792   20.93   18.23 17.06 ~ 4 0
39 [FBC2017] J065834.1-555618.2 GiC 06 58 34.145 -55 56 18.08   20.61   18.11 16.96 ~ 4 0
40 [BBR2002] 33 GiC 06 58 35.0 -55 57 05   22.19   19.57 18.39 ~ 1 0
41 [FBC2017] J065835.2-555656.7 BiC 06 58 35.237 -55 56 56.55   20.47   17.65 16.46 ~ 7 0
42 [FBC2017] J065835.3-555843.5 GiC 06 58 35.335 -55 58 43.42   22.04   19.72 18.59 ~ 3 0
43 [FBC2017] J065835.4-555719.5 GiC 06 58 35.413 -55 57 19.38   22.26   19.63 18.53 ~ 5 0
44 [FBC2017] J065836.0-555658.5 GiC 06 58 36.053 -55 56 58.33   21.69   18.89 17.91 ~ 4 0
45 [BBR2002] 35 GiC 06 58 36.10 -55 55 10.9   20.62   18.23 17.10 ~ 2 0
46 [FBC2017] J065836.3-555717.2 GiC 06 58 36.361 -55 57 16.96   22.49   19.85 18.70 ~ 4 0
47 [BBR2002] 40 GiC 06 58 36.71 -55 56 23.2   20.17   18.80 17.64 ~ 3 0
48 [FBC2017] J065836.8-555616.9 GiC 06 58 36.836 -55 56 16.72   22.44   19.08 17.85 ~ 4 0
49 [BBR2002] 44 GiC 06 58 37.0 -55 58 58   22.35   19.30 18.00 ~ 1 0
50 [BBR2002] 43 GiC 06 58 37.0 -55 57 03   21.58   19.04 18.84 ~ 2 0
51 [BBR2002] 39 GiC 06 58 37.0 -55 56 21   22.93   20.52 19.30 ~ 1 0
52 [FBC2017] J065837.0-555631.1 GiC 06 58 37.013 -55 56 31.07   22.84   19.48 18.20 ~ 4 0
53 [BBR2002] 37 GiC 06 58 37.02 -55 55 16.3   21.41   19.25 18.20 ~ 3 0
54 [FBC2017] J065837.2-555647.5 GiC 06 58 37.125 -55 56 47.29   21.19   18.76 17.59 ~ 4 0
55 [FBC2017] J065838.0-555722.8 GiC 06 58 37.9603973760 -55 57 22.497822252   21.00   17.78 17.23 ~ 3 0
56 [FBC2017] J065838.0-555731.6 GiC 06 58 37.967 -55 57 31.00   21.79   19.86 18.24 ~ 3 0
57 [BBR2002] 49 GiC 06 58 38.0 -55 59 01   22.38   19.42 18.43 ~ 2 0
58 [FBC2017] J065838.0-555745.5 GiC 06 58 38.007 -55 57 45.36   21.54   18.89 18.03 ~ 3 0
59 2MASX J06583806-5557256 BiC 06 58 38.0919286608 -55 57 25.724859696   20.32   17.78 16.56 ~ 6 0
60 [FBC2017] J065838.2-555626.5 GiC 06 58 38.197 -55 56 26.34   22.16   18.97 17.75 ~ 4 0
61 [FBC2017] J065839.3-555731.7 GiC 06 58 39.346 -55 57 31.56   22.01   19.35 17.58 ~ 3 0
62 [FBC2017] J065839.6-555611.9 GiC 06 58 39.598 -55 56 11.78   22.53   19.99 18.85 ~ 3 0
63 [BBR2002] 52 GiC 06 58 40.0 -55 57 48   23.47   21.19 20.12 ~ 2 0
64 [FBC2017] J065840.0-555919.5 GiC 06 58 40.002 -55 59 19.32   22.05   19.78 18.63 ~ 3 0
65 [BBR2002] 77 GiC 06 58 40.39 -55 56 03.0   21.24   19.31 18.31 ~ 3 0
66 [BBR2002] 56 GiC 06 58 40.50 -55 59 03.9   23.43   20.94 19.81 ~ 2 0
67 [FBC2017] J065840.9-555700.8 GiC 06 58 40.950 -55 57 00.66   22.22   19.75 18.58 ~ 3 0
68 [FBC2017] J065841.3-555734.2 GiC 06 58 41.308 -55 57 34.12   23.20   20.65 19.50 ~ 3 0
69 [BBR2002] 58 GiC 06 58 42.0 -56 00 28   23.00   20.36 19.66 ~ 1 0
70 [BBR2002] 57 GiC 06 58 42.0 -55 59 20   21.17   19.76 18.76 ~ 1 0
71 [FBC2017] J065842.5-555750.8 GiC 06 58 42.5223743544 -55 57 50.594669820   21.79   19.40 18.27 ~ 4 0
72 DES J065842.67-555835.6 GiC 06 58 42.674 -55 58 35.61   19.92   17.30 16.10 ~ 5 0
73 [FBC2017] J065844.3-555721.6 GiC 06 58 44.352 -55 57 21.38   22.49   20.27 19.16 ~ 3 0
74 [FBC2017] J065844.9-555757.0 GiC 06 58 44.879 -55 57 56.78   22.21   19.57 18.53 ~ 3 0
75 [FBC2017] J065845.0-555941.6 GiC 06 58 44.975 -55 59 41.44   22.53   20.20 18.88 ~ 3 0
76 [FBC2017] J065845.5-555835.0 GiC 06 58 45.493 -55 58 34.98   22.26   18.56 17.34 ~ 3 0
77 [BBR2002] 64 GiC 06 58 46.0 -55 58 38   21.89   18.83 19.04 ~ 2 0
78 [FBC2017] J065849.0-555903.8 GiC 06 58 48.954 -55 59 03.75   21.81   19.48 18.31 ~ 3 0
79 [BBR2002] 67 GiC 06 58 51.0 -56 00 26           ~ 1 0
80 [BBR2002] 66 GiC 06 58 51.0 -56 00 25   22.49   19.23 17.71 ~ 2 0
81 ClG 1054-03 ClG 10 57 00.2 -03 37 27     22     ~ 454 0
82 ACO 3558 ClG 13 27 54.8 -31 29 32           ~ 442 2
83 ACO 3562 ClG 13 33 31.8 -31 40 23           ~ 314 1
84 ClG J1716+6708 ClG 17 16 49.6 +67 08 30           ~ 134 0
85 NAME ACO 3558 Complex SCG ~ ~           ~ 10 1

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