2015MNRAS.452.3304P

Query : 2015MNRAS.452.3304P

2015MNRAS.452.3304P - Mon. Not. R. Astron. Soc., 452, 3304-3318 (2015/October-1)

The structure and dynamics of the AC114 galaxy cluster revisited.

PROUST D., YEGOROVA I., SAVIANE I., IVANOV V.D., BRESOLIN F., SALZER J.J. and CAPELATO H.V.

Abstract (from CDS):

We present a dynamical analysis of the galaxy cluster AC114 based on a catalogue of 524 velocities. Of these, 169 (32 percent) are newly obtained at European Southern Observatory (Chile) with the Very Large Telescope and the VIsible MultiObject spectrograph. Data on individual galaxies are presented and the accuracy of the measured velocities is discussed. Dynamical properties of the cluster are derived. We obtain an improved mean redshift value z = 0.31665±0.0008 and velocity dispersion σ= 1893^+73_-82 km s^-1. A large velocity dispersion within the core radius and the shape of the infall pattern suggests that this part of the cluster is in a radial phase of relaxation with a very elongated radial filament spanning 12000 km/s. A radial foreground structure is detected within the central 0.5 h-1 Mpc radius, recognizable as a redshift group at the same central redshift value. We analyse the colour distribution for this archetype Butcher-Oemler galaxy cluster and identify the separate red and blue galaxy sequences. The latter subset contains 44 percent of confirmed members of the cluster, reaching magnitudes as faint as Rf= 21.1 (1.0mag fainter than previous studies). We derive a mass M200 = (4.3±0.7)x1015 M☉ h-1. In a subsequent paper, we will utilize the spectral data presented here to explore the mass-metallicity relation for this intermediate redshift cluster.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): galaxies: clusters: general - galaxies: distances and redshifts - galaxies: evolution - cosmology: observations - distance scale - large-scale structure of Universe

VizieR on-line data: <Available at CDS (J/MNRAS/452/3304): table2.dat>

Nomenclature: Table 2: [PYS2015] N NNa N=33 among (Nos 1-1 to 1-45b), N=37 among (Nos 2 1a to 2 41), N=39 among (Nos 3 1 to 3 49), N=60 among (Nos 4 2 to 4 65).

Simbad objects: 177

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Number of rows : 177
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 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 648 1
2 LP 995-86 Pe* 03 48 22.6125679056 -39 08 37.013680104   13.61 13.15     F 104 0
3 ACO 539 ClG 05 16 35.1 +06 27 14           ~ 255 2
4 ACO 1367 ClG 11 44 44.6 +19 41 59           ~ 1127 1
5 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 5141 2
6 NAME Shapley Supercluster SCG 13 06.0 -33 04           ~ 677 0
7 [PYS2015] 3 10 G 22 58 22.64 -34 34 33.3   19.8   18.7   ~ 2 0
8 [PYS2015] 3 23 G 22 58 22.99 -34 36 26.7   22.1   20.5   ~ 2 0
9 GAMA J225823.24-343555.6 G 22 58 23.25 -34 35 55.6   20.0   18.6   ~ 3 0
10 GAMA J225824.22-343700.8 G 22 58 24.23 -34 37 00.8           ~ 3 0
11 GAMA J225824.85-344615.0 EmG 22 58 24.86 -34 46 15.0   20.8   19.000   ~ 5 0
12 [PYS2015] 4 10 G 22 58 25.31 -34 43 25.5   20.5   18.8   ~ 2 0
13 [PYS2015] 4 18 G 22 58 25.81 -34 44 06.4           ~ 2 0
14 [PYS2015] 4 15 EmG 22 58 25.91 -34 43 52.0   21.2   20.900   ~ 3 0
15 [PYS2015] 4 52 G 22 58 26.11 -34 47 37.5   22.6   18.200   ~ 3 0
16 [CBB2001] 1472 EmG 22 58 26.3661 -34 44 08.394       20.200   ~ 4 0
17 [PYS2015] 4 13 G 22 58 26.64 -34 43 44.0   22.4   20.5   ~ 2 0
18 [PYS2015] 4 28 G 22 58 26.83 -34 45 02.6       20.000   ~ 3 0
19 [PYS2015] 4 12 G 22 58 26.84 -34 43 34.1   22.1   21.0   ~ 1 0
20 [PYS2015] 4 41 G 22 58 27.85 -34 46 26.3       19.700   ~ 3 0
21 [PYS2015] 3 30 EmG 22 58 27.93 -34 37 16.9   21.2   20.1   ~ 2 0
22 [PYS2015] 3 26 G 22 58 28.24 -34 36 48.7       20.200   ~ 3 0
23 [CBB2001] 1196 EmG 22 58 28.3786 -34 46 00.941   22.04   19.61 18.89 ~ 5 0
24 [PYS2015] 4 43 G 22 58 28.88 -34 46 40.3       20.200   ~ 3 0
25 [PYS2015] 3 24 G 22 58 28.94 -34 36 34.7           ~ 2 0
26 [PYS2015] 4 48 G 22 58 29.14 -34 47 13.1   21.6   20.000   ~ 3 0
27 [PYS2015] 4 16 G 22 58 29.50 -34 43 55.5   22.2   20.400   ~ 3 0
28 [PYS2015] 3 27 EmG 22 58 29.50 -34 36 55.9           ~ 2 0
29 [MMK2007] J225829.65-344628.7 GiC 22 58 29.65 -34 46 28.7   23.23 22.30 21.28 20.66 ~ 3 0
30 [PYS2015] 4 37 EmG 22 58 29.65 -34 45 57.5           ~ 2 0
31 [CBB2001] 1352 EmG 22 58 29.7740 -34 44 53.976           ~ 3 0
32 [CBB2001] 1398 EmG 22 58 30.1393 -34 44 40.929       22.72 22.10 ~ 4 0
33 [PYS2015] 4 64 G 22 58 31.46 -34 48 53.3       18.300   ~ 3 0
34 [PYS2015] 3 36 EmG 22 58 31.51 -34 38 24.2   22.3   20.7   ~ 2 0
35 [PYS2015] 4 9b G 22 58 31.70 -34 43 18.8           ~ 2 0
36 [PYS2015] 4 9a G 22 58 31.70 -34 43 18.8   21.0   18.9   ~ 2 0
37 [PYS2015] 3 29 EmG 22 58 32.32 -34 37 07.5   21.6   20.1   ~ 2 0
38 [PYS2015] 4 7 EmG 22 58 32.37 -34 42 55.1   20.4   19.7   ~ 2 0
39 [PYS2015] 3 21 EmG 22 58 32.39 -34 36 15.5   21.1   19.2   ~ 2 0
40 [PYS2015] 4 11 G 22 58 32.43 -34 43 30.3   19.0   17.4   ~ 2 0
41 [PYS2015] 3 20 EmG 22 58 32.46 -34 36 07.9           ~ 2 0
42 [PYS2015] 4 8 EmG 22 58 32.75 -34 43 02.0           ~ 2 0
43 [PYS2015] 4 24 G 22 58 33.19 -34 44 39.7       20.500   ~ 3 0
44 [PYS2015] 3 35 EmG 22 58 33.67 -34 38 18.9   21.4   20.1   ~ 2 0
45 [PYS2015] 4 54 G 22 58 33.80 -34 47 46.6   22.3   19.5   ~ 2 0
46 [PYS2015] 3 6 G 22 58 33.87 -34 33 53.5           ~ 2 0
47 [PYS2015] 4 55a G 22 58 33.96 -34 47 53.3           ~ 2 0
48 [PYS2015] 4 55b G 22 58 33.96 -34 47 53.3           ~ 2 0
49 [PYS2015] 3 40 G 22 58 34.07 -34 38 53.1   21.9   19.300   ~ 3 0
50 [PYS2015] 4 65 G 22 58 34.69 -34 49 01.3           ~ 1 0
51 CN AC114 832 EmG 22 58 34.7504 -34 47 04.221   22.63 21.19 20.23 19.54 ~ 8 0
52 [PYS2015] 4 2 G 22 58 34.99 -34 42 24.0       19.500   ~ 3 0
53 [PYS2015] 4 23 G 22 58 35.11 -34 44 34.8   21.9   20.600   ~ 3 0
54 [PYS2015] 4 4 G 22 58 35.53 -34 42 35.8           ~ 2 0
55 GAMA J225835.84-344547.0 EmG 22 58 35.84 -34 45 47.1   20.46 19.14 18.17 17.41 ~ 8 0
56 [PYS2015] 3 11 EmG 22 58 35.95 -34 34 45.6   22.4   20.6   ~ 2 0
57 [CBB2001] 1281 EmG 22 58 36.4167 -34 45 14.286   22.45 20.95 19.87 19.06 ~ 6 0
58 [CBB2001] 1034 EmG 22 58 36.4316 -34 46 50.675       20.600   ~ 4 0
59 [PYS2015] 3 12 EmG 22 58 36.88 -34 34 58.2   21.5   19.000   ~ 3 0
60 2dFGRS TGS537Z147 G 22 58 37.05 -34 40 05.7   19.517   18.393   ~ 4 0
61 [CBB2001] 1360 EmG 22 58 37.9352 -34 45 21.142   20.62 18.62 17.48 16.68 ~ 7 0
62 [CPK2001] V12 EmG 22 58 38.15 -34 48 25.3   22.66 22.22 21.01 20.03 ~ 5 0
63 [PYS2015] 4 39 G 22 58 38.57 -34 46 10.7           ~ 2 0
64 [PYS2015] 3 33 EmG 22 58 39.09 -34 37 52.3           ~ 2 0
65 [PYS2015] 3 43 EmG 22 58 39.42 -34 39 13.5           ~ 2 0
66 [PYS2015] 4 20 G 22 58 39.44 -34 44 18.6       19.600   ~ 3 0
67 [PYS2015] 3 44 EmG 22 58 39.45 -34 39 24.1   22.2   19.4   ~ 2 0
68 CN AC114 247 GiC 22 58 39.57 -34 47 14.9   21.86 20.41 19.27 18.49 ~ 10 0
69 [PYS2015] 3 34 EmG 22 58 39.66 -34 38 03.8           ~ 2 0
70 [PYS2015] 4 22 EmG 22 58 39.87 -34 44 28.0       19.400   ~ 3 0
71 [PYS2015] 3 4 EmG 22 58 40.08 -34 33 42.2   21.3   19.9   ~ 2 0
72 [PYS2015] 3 3 G 22 58 40.11 -34 33 34.6   21.9   19.2   ~ 2 0
73 [PYS2015] 3 25 G 22 58 40.69 -34 36 41.1           ~ 2 0
74 CN AC114 243 GiC 22 58 40.89 -34 46 43.3   20.6   18.300   ~ 8 0
75 [PYS2015] 3 15 G 22 58 41.00 -34 35 21.4           ~ 2 0
76 [PYS2015] 3 5 EmG 22 58 41.10 -34 33 49.0           ~ 2 0
77 [PYS2015] 3 38 EmG 22 58 41.21 -34 38 40.5           ~ 2 0
78 GAMA J225841.25-343325.3 EmG 22 58 41.26 -34 33 25.3   20.5   18.8   ~ 3 0
79 [PYS2015] 4 33 EmG 22 58 41.30 -34 45 30.6   21.1   19.6   ~ 2 0
80 [PYS2015] 3 1 EmG 22 58 41.57 -34 33 18.1   20.3   19.800   ~ 3 0
81 [AMA2011] ac114 147 EmG 22 58 41.5754 -34 43 45.186   20.5   21.35 21.19 ~ 5 0
82 CN AC114 145 EmG 22 58 41.64 -34 48 06.5   21.98 20.46 19.36 18.59 ~ 11 0
83 [AMA2011] ac114 100 EmG 22 58 41.9687 -34 44 48.481   20.79 20.00 19.60 19.24 ~ 6 0
84 [PYS2015] 4 5 EmG 22 58 42.57 -34 42 42.5           ~ 2 0
85 [PYS2015] 3 46 G 22 58 42.70 -34 39 40.6           ~ 2 0
86 [PYS2015] 3 8 EmG 22 58 42.73 -34 34 23.0   22.0       ~ 2 0
87 CN AC114 143 EmG 22 58 42.8292 -34 48 31.135   22.39 21.05 20.53 20.12 ~ 9 0
88 [PYS2015] 3 45 G 22 58 43.50 -34 39 32.3   21.6   20.6   ~ 2 0
89 [PYS2015] 4 56 EmG 22 58 44.05 -34 47 59.4       18.400   ~ 3 0
90 [PYS2015] 3 31 EmG 22 58 44.38 -34 37 24.2   22.2   20.2   ~ 2 0
91 CN AC114 140 EmG 22 58 44.4578 -34 48 19.050     22.03 21.04 20.28 ~ 8 0
92 [PYS2015] 4 3 EmG 22 58 45.17 -34 42 28.9   22.6   19.1   ~ 2 0
93 [PYS2015] 4 59 G 22 58 45.48 -34 48 14.9           ~ 2 0
94 [PYS2015] 3 16 EmG 22 58 45.84 -34 35 30.4   20.9   20.4   ~ 2 0
95 CN AC114 5 EmG 22 58 46.31 -34 47 29.5   21.73 20.25 19.22 18.48 ~ 11 0
96 [PYS2015] 3 39 EmG 22 58 46.63 -34 38 45.7   21.9   20.6   ~ 2 0
97 [PYS2015] 4 35 EmG 22 58 47.92 -34 45 45.0   21.7   19.5   ~ 2 0
98 [CBB2001] 941 EmG 22 58 48.1151 -34 47 21.429       21.65 21.23 ~ 4 0
99 [PYS2015] 3 17 EmG 22 58 48.43 -34 35 39.7           ~ 2 0
100 [CBB2001] 852 EmG 22 58 49.7824 -34 48 02.295   21.6   19.7   ~ 3 0
101 [PYS2015] 4 21 G 22 58 50.72 -34 44 16.7       19.500   ~ 3 0
102 [BAE96] AC 114 161 EmG 22 58 51.0097 -34 46 58.803   21.04 20.16 19.60 19.11 ~ 11 0
103 [PYS2015] 3 13 G 22 58 51.29 -34 35 07.6           ~ 1 0
104 ACO S 1077 ClG 22 58 52.34 -34 46 54.6           ~ 198 0
105 [BAE96] AC 114 44 EmG 22 58 52.7049 -34 48 37.245       20.200   ~ 5 0
106 [PYS2015] 3 18 EmG 22 58 56.50 -34 35 48.2   20.8   19.3   ~ 2 0
107 [PYS2015] 2 18 G 22 59 12.16 -34 36 28.0   21.0       ~ 2 0
108 [PYS2015] 2 26 EmG 22 59 12.34 -34 37 37.5   22.3   20.2   ~ 2 0
109 [PYS2015] 2 8 G 22 59 12.89 -34 34 48.4           ~ 2 0
110 [PYS2015] 2 4 EmG 22 59 13.67 -34 34 11.1           ~ 2 0
111 [PYS2015] 2 37 EmG 22 59 13.94 -34 39 33.0   21.8   20.7   ~ 2 0
112 [PYS2015] 2 5 G 22 59 15.03 -34 34 23.5   22.5   20.1   ~ 2 0
113 [PYS2015] 2 28 EmG 22 59 15.56 -34 37 57.2   20.8   19.4   ~ 2 0
114 [PYS2015] 2 15 G 22 59 15.61 -34 35 51.1           ~ 2 0
115 [PYS2015] 1 44 EmG 22 59 15.92 -34 48 43.8   22.2   21.1   ~ 2 0
116 [PYS2015] 2 1b G 22 59 16.30 -34 33 40.6           ~ 2 0
117 [PYS2015] 2 1a G 22 59 16.30 -34 33 40.6   20.8   19.0   ~ 2 0
118 [PYS2015] 2 33 EmG 22 59 16.65 -34 38 43.7   20.1   18.1   ~ 2 0
119 [PYS2015] 1 41 G 22 59 16.77 -34 48 06.8           ~ 2 0
120 [PYS2015] 2 11 EmG 22 59 16.88 -34 35 08.5           ~ 2 0
121 [PYS2015] 1 11 G 22 59 17.61 -34 43 57.1           ~ 2 0
122 [PYS2015] 2 29 EmG 22 59 17.62 -34 38 03.8           ~ 2 0
123 [PYS2015] 2 9 EmG 22 59 17.73 -34 34 54.1           ~ 2 0
124 [PYS2015] 2 3 EmG 22 59 18.00 -34 33 58.5           ~ 2 0
125 [PYS2015] 1 38 EmG 22 59 18.07 -34 47 39.8           ~ 2 0
126 [PYS2015] 2 2 G 22 59 18.23 -34 33 50.7           ~ 2 0
127 GAMA J225918.48-344342.4 EmG 22 59 18.48 -34 43 42.5   20.5   18.8   ~ 3 0
128 [PYS2015] 1 19 EmG 22 59 18.51 -34 45 13.1   21.2   20.3   ~ 2 0
129 [PYS2015] 2 10 EmG 22 59 18.77 -34 35 02.2   21.5   19.9   ~ 2 0
130 [PYS2015] 2 16 EmG 22 59 19.18 -34 35 59.7   21.4   20.4   ~ 2 0
131 [PYS2015] 2 19 G 22 59 19.31 -34 36 38.6   22.0   20.1   ~ 2 0
132 [PYS2015] 1 13 G 22 59 20.00 -34 44 20.3           ~ 1 0
133 [PYS2015] 1 12 EmG 22 59 20.05 -34 44 09.4   20.8   19.5   ~ 2 0
134 [PYS2015] 2 14 G 22 59 20.21 -34 35 43.7           ~ 2 0
135 [PYS2015] 1 1 G 22 59 20.70 -34 42 24.6           ~ 2 0
136 [PYS2015] 2 27 EmG 22 59 21.00 -34 37 46.0   20.6   20.0   ~ 2 0
137 [PYS2015] 2 7 G 22 59 21.45 -34 34 41.8           ~ 2 0
138 [PYS2015] 2 23 G 22 59 21.57 -34 37 07.8   19.3   18.4   ~ 2 0
139 [PYS2015] 2 21 G 22 59 21.69 -34 36 53.5           ~ 2 0
140 [PYS2015] 2 38 EmG 22 59 23.08 -34 39 47.1       20.100   ~ 3 0
141 [PYS2015] 1 18 EmG 22 59 23.15 -34 45 03.0       19.700   ~ 3 0
142 GAMA J225923.29-344758.2 EmG 22 59 23.30 -34 47 58.2   20.6   18.100   ~ 4 0
143 GAMA J225923.74-343431.4 G 22 59 23.75 -34 34 31.4   21.3   19.2   ~ 3 0
144 [PYS2015] 1 37 EmG 22 59 23.76 -34 47 27.4   21.0   19.600   ~ 3 0
145 [PYS2015] 2 31 G 22 59 24.67 -34 38 18.4   21.4   20.6   ~ 2 0
146 [PYS2015] 1 22 EmG 22 59 24.80 -34 45 36.6   22.3   19.6   ~ 2 0
147 [PYS2015] 2 32 EmG 22 59 25.00 -34 38 35.6   20.8   19.500   ~ 3 0
148 [PYS2015] 1 34 G 22 59 25.25 -34 47 05.9           ~ 2 0
149 [PYS2015] 2 36 EmG 22 59 25.79 -34 39 11.8   21.4   20.0   ~ 2 0
150 [PYS2015] 1 9 G 22 59 25.99 -34 43 31.9           ~ 2 0
151 [PYS2015] 1 28 G 22 59 26.16 -34 46 32.5   20.2   19.2   ~ 2 0
152 [PYS2015] 2 13 G 22 59 26.31 -34 35 32.2           ~ 2 0
153 [PYS2015] 1 15 EmG 22 59 28.09 -34 44 29.0           ~ 2 0
154 [PYS2015] 1 24 G 22 59 28.59 -34 45 49.8   21.6   19.6   ~ 2 0
155 [PYS2015] 1 16 G 22 59 28.82 -34 44 44.1           ~ 2 0
156 [PYS2015] 1 2 G 22 59 31.37 -34 42 28.4           ~ 1 0
157 [PYS2015] 1 45b G 22 59 31.40 -34 48 50.4           ~ 1 0
158 [PYS2015] 1 45a G 22 59 31.40 -34 48 50.3           ~ 1 0
159 [PYS2015] 1 26 G 22 59 32.09 -34 46 13.6           ~ 2 0
160 [PYS2015] 1 5 EmG 22 59 32.31 -34 42 58.2   20.2       ~ 2 0
161 [PYS2015] 1 27 G 22 59 32.34 -34 46 23.3           ~ 2 0
162 [PYS2015] 2 12 G 22 59 32.84 -34 35 24.7   21.9       ~ 2 0
163 2dFGRS TGS537Z096 EmG 22 59 33.50 -34 42 36.5   18.688   18.132   ~ 4 0
164 [PYS2015] 1 31 G 22 59 33.65 -34 46 49.2           ~ 2 0
165 [PYS2015] 1 36 G 22 59 34.22 -34 47 19.9           ~ 2 0
166 [PYS2015] 1 25 EmG 22 59 35.08 -34 45 57.0   22.4       ~ 2 0
167 GAMA J225936.13-344640.4 EmG 22 59 36.14 -34 46 40.5   20.8   19.600   ~ 4 0
168 [PYS2015] 2 40 G 22 59 36.39 -34 39 58.4           ~ 2 0
169 GAMA J225936.48-344321.6 EmG 22 59 36.47 -34 43 21.8   20.2       ~ 3 0
170 [PYS2015] 2 22 EmG 22 59 36.79 -34 36 53.5           ~ 2 0
171 [PYS2015] 2 24 EmG 22 59 36.81 -34 37 21.2           ~ 2 0
172 [PYS2015] 1 17 G 22 59 38.42 -34 44 52.4           ~ 2 0
173 [PYS2015] 2 39 EmG 22 59 39.01 -34 39 53.1           ~ 2 0
174 GAMA J225940.34-344518.6 G 22 59 40.35 -34 45 18.7           ~ 3 0
175 [PYS2015] 2 35 G 22 59 40.57 -34 39 05.1       19.700   ~ 3 0
176 [PYS2015] 2 41 G 22 59 43.80 -34 40 06.7           ~ 2 0
177 ACO 2670 ClG 23 54 10.51 -10 23 06.8           ~ 364 0

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