CDS

2012A&A...540A..43B

Query : 2012A&A...540A..43B

2012A&A...540A..43B - Astronomy and Astrophysics, volume 540A, 43-43 (2012/4-1)

Abell 1758N from an optical point of view: new insights on a merging cluster with diffuse radio emission.

BOSCHIN W., GIRARDI M., BARRENA R. and NONINO M.

Abstract (from CDS):

The mechanisms producing the diffuse radio emission in galaxy clusters, and in particular their connection with cluster mergers, are still debated. We seek to explore the internal dynamics of the cluster Abell 1758N, which has been shown to host a radio halo and two relics, and is known to be a merging bimodal cluster.Our analysis is mainly based on new redshift data for 137 galaxies acquired at the Telescopio Nazionale Galileo, only four of which have redshifts previously listed in the literature. We also used photometric data from the Sloan Digital Sky Survey and from the Canada-France-Hawaii Telescope archive. We combined galaxy velocities and positions to select 92 cluster galaxies and analyzed the internal cluster dynamics.We estimate a cluster redshift of <z≥0.2782 and quite a high line-of-sight (LOS) velocity dispersion σV∼1300km/s. Our 2D analysis confirms the presence of a bimodal structure along the NW-SE direction. We add several pieces of information to the previous merging scenario: the two subclusters (here A1758N(NW) and A1758N(SE)) cannot be separated in the velocity analyses and we deduce a small LOS velocity difference (ΔVrf,LOS≲300km/s in the cluster rest-frame). The velocity information successfully shows that A1758N is surrounded by two small groups and active galaxies infalling onto, or escaping from, the cluster. Removing the two groups, we estimate σV,NW∼1000km/s and σV,SE∼800km/s for A1758N(NW) and A1758N(SE), respectively. We find that Abell 1758N is a very massive cluster with a range of M=2-3x1015h70–1M☉, depending on the adopted model. As expected for clusters that host powerful, extended, diffuse radio emissions, Abell 1758N is a major cluster merger just forming a massive system.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: Abell 1758N - galaxies: clusters: general - galaxies: kinematics and dynamics

VizieR on-line data: <Available at CDS (J/A+A/540/A43): table1.dat>

Nomenclature: Table 1: [BGB2012] NNN (Nos 1-137).

Simbad objects: 152

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Number of rows : 152
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023 		#notes
1 ACO 2744 ClG 00 14 20.03 -30 23 17.8           ~ 749 0
2 ZwCl 0024+1652 ClG 00 26 35.6 +17 09 32     18.35     ~ 633 1
3 ACO 209 ClG 01 31 52.9 -13 36 53           ~ 289 0
4 ACO 3266 ClG 04 31 11.9 -61 24 23           ~ 407 0
5 ACO 520 ClG 04 54 10.1 +02 55 38           ~ 431 0
6 ACO 754 ClG 09 09 08.4 -09 39 58           ~ 661 1
7 ACO 1656 ClG 12 59 44.40 +27 54 44.9           ~ 4694 2
8 BAX 199.3086-25.5133 ClG 13 14 25.4 -25 15 44           ~ 101 0
9 SDSS J133213.95+503623.2 G 13 32 13.954 +50 36 23.23   23.01   21.65   ~ 2 0
10 SDSS J133214.69+503452.4 G 13 32 14.695 +50 34 52.48   21.04   19.64   ~ 2 0
11 SDSS J133215.37+503518.1 G 13 32 15.378 +50 35 18.12   21.92   20.23   ~ 2 0
12 SDSS J133216.88+503319.2 G 13 32 16.882 +50 33 19.27   21.41   19.61   ~ 2 0
13 SDSS J133217.61+503727.1 G 13 32 17.613 +50 37 27.12   19.89   18.99   ~ 2 0
14 SDSS J133217.85+503339.5 G 13 32 17.848 +50 33 39.58   20.86   20.07   ~ 2 0
15 SDSS J133217.91+503739.4 G 13 32 17.916 +50 37 39.47   21.62   20.08   ~ 2 0
16 DES J133218.32+503647.8 GiC 13 32 18.323 +50 36 47.58   22.06   20.10   ~ 4 0
17 SDSS J133218.98+503604.3 G 13 32 18.981 +50 36 04.38   22.48   21.01   ~ 2 0
18 SDSS J133219.27+503603.8 G 13 32 19.279 +50 36 03.83   21.86   19.96   ~ 2 0
19 SDSS J133219.44+503411.1 G 13 32 19.447 +50 34 11.15   22.47   20.16   ~ 2 0
20 SDSS J133222.26+503508.9 G 13 32 22.267 +50 35 08.96   21.63   19.64   ~ 3 0
21 DES J133222.42+503449.1 GiC 13 32 22.422 +50 34 48.84   21.67   19.82   ~ 3 0
22 SDSS J133222.46+503704.4 G 13 32 22.466 +50 37 04.45   23.51   21.81   ~ 2 0
23 SDSS J133222.58+503527.3 G 13 32 22.585 +50 35 27.40   21.94   19.76   ~ 2 0
24 DES J133222.88+503604.9 GiC 13 32 22.884 +50 36 04.74   22.24   20.16   ~ 3 0
25 DES J133225.27+503403.7 GiC 13 32 25.2712787520 +50 34 03.488937780   20.49   18.29   ~ 4 0
26 SDSS J133225.98+503818.2 G 13 32 25.982 +50 38 18.20   21.70   20.07   ~ 2 0
27 SDSS J133227.58+503744.4 G 13 32 27.5832834336 +50 37 44.377151340   21.64   19.70   ~ 2 0
28 SDSS J133227.59+503331.4 G 13 32 27.589 +50 33 31.50   21.96   20.15   ~ 2 0
29 SDSS J133229.22+503410.0 G 13 32 29.224 +50 34 10.02   21.42   19.46   ~ 3 0
30 SDSS J133229.57+503525.8 G 13 32 29.574 +50 35 25.80   22.00   20.46   ~ 2 0
31 DES J133229.93+503721.7 GiC 13 32 29.934 +50 37 21.49   22.04   19.86   ~ 4 0
32 DES J133230.22+503637.3 GiC 13 32 30.228 +50 36 37.14   22.61   20.24   ~ 3 0
33 DES J133230.26+503349.2 GiC 13 32 30.269 +50 33 49.05   21.96   19.74   ~ 3 0
34 SDSS J133230.61+503625.4 G 13 32 30.616 +50 36 25.48   21.94   19.91   ~ 3 0
35 SDSS J133231.63+503617.6 G 13 32 31.639 +50 36 17.70   21.54   19.51   ~ 2 0
36 DES J133231.88+503450.1 GiC 13 32 31.884 +50 34 49.87   22.44   20.17   ~ 4 0
37 ACO 1758 ClG 13 32 32.1 +50 30 37           ~ 243 2
38 SDSS J133232.64+503427.8 G 13 32 32.6370331296 +50 34 27.874371072   20.31   18.49   ~ 3 0
39 NAME ACO 1758S GrG 13 32 32.8 +50 24 48           ~ 62 0
40 DES J133232.85+503604.7 GiC 13 32 32.8532808864 +50 36 04.466119896   21.98   19.89   ~ 3 0
41 SDSS J133233.30+503402.5 G 13 32 33.306 +50 34 02.51   22.36   21.26   ~ 2 0
42 SDSS J133233.72+503103.4 G 13 32 33.724 +50 31 03.43   21.81   19.79   ~ 2 0
43 SDSS J133233.85+503049.9 rG 13 32 33.853 +50 30 50.00   21.00   19.01   ~ 2 0
44 DES J133234.11+503039.9 GiC 13 32 34.117 +50 30 39.73   21.87   20.03   ~ 3 0
45 DES J133234.31+503303.3 rG 13 32 34.3102212216 +50 33 03.147410952   21.32   19.26   ~ 4 0
46 SDSS J133234.40+503211.3 G 13 32 34.404 +50 32 11.31   21.18   19.77   ~ 3 0
47 DES J133234.49+503318.7 rG 13 32 34.494 +50 33 18.51   20.94   18.78   ~ 5 0
48 SDSS J133234.57+503316.2 G 13 32 34.574 +50 33 16.20           ~ 1 0
49 SDSS J133234.68+503139.0 G 13 32 34.688 +50 31 39.09   22.53   20.25   ~ 2 0
50 DES J133234.70+503324.9 rG 13 32 34.6977291360 +50 33 24.707965176   21.47   19.22   ~ 5 0
51 SDSS J133234.74+503143.2 G 13 32 34.748 +50 31 43.27   21.96   20.36   ~ 2 0
52 DES J133234.95+503237.5 GiC 13 32 34.9494409656 +50 32 37.287644856   20.66   18.58   ~ 5 0
53 SDSS J133235.07+503830.4 G 13 32 35.072 +50 38 30.46   21.14   19.61   ~ 2 0
54 SDSS J133235.20+503236.2 G 13 32 35.208 +50 32 36.24   19.37   17.96   ~ 6 0
55 DES J133235.69+503338.3 GiC 13 32 35.696 +50 33 38.12   22.22   20.03   ~ 3 0
56 DES J133235.72+503450.1 GiC 13 32 35.730 +50 34 49.83   22.82   20.66   ~ 3 0
57 DES J133235.83+503352.2 GiC 13 32 35.842 +50 33 52.04   22.39   20.36   ~ 4 0
58 SDSS J133236.45+503550.6 G 13 32 36.452 +50 35 50.58   21.47   20.25   ~ 2 0
59 SDSS J133236.87+503037.6 G 13 32 36.879 +50 30 37.65   22.21   20.48   ~ 2 0
60 DES J133236.88+503259.9 rG 13 32 36.8836056984 +50 32 59.665470216   21.48   19.35   ~ 5 0
61 DES J133237.57+503305.9 rG 13 32 37.5758370984 +50 33 05.706131832   21.41   19.18   ~ 5 0
62 DES J133238.04+503057.4 GiC 13 32 38.043 +50 30 57.20   22.64   20.41   ~ 3 0
63 DES J133238.33+503130.5 GiC 13 32 38.334 +50 31 30.27   22.60   20.67   ~ 4 0
64 DES J133238.34+503330.4 GiC 13 32 38.3449472928 +50 33 30.178040868   20.88   18.64   ~ 3 0
65 SDSS J133238.41+503335.7 BiC 13 32 38.4096415488 +50 33 35.782077096   19.65   17.41   ~ 16 0
66 SDSS J133238.46+503141.4 G 13 32 38.465 +50 31 41.43   22.65   20.59   ~ 3 0
67 DES J133238.48+503253.2 GiC 13 32 38.483 +50 32 53.07   22.08   19.99   ~ 3 0
68 DES J133238.57+503344.1 GiC 13 32 38.586 +50 33 43.88   20.72   18.67   ~ 5 0
69 DES J133239.43+503445.2 rG 13 32 39.4323008712 +50 34 45.027436656   21.11   18.89   ~ 5 0
70 DES J133239.53+503345.2 GiC 13 32 39.5359204704 +50 33 45.049056660   22.00   19.74   ~ 3 0
71 DES J133239.54+503432.2 rG 13 32 39.5415523248 +50 34 31.949971320   20.99   18.84   ~ 5 0
72 DES J133239.76+503314.6 GiC 13 32 39.765 +50 33 14.41   22.36   20.09   ~ 3 0
73 DES J133239.79+503241.1 rG 13 32 39.793 +50 32 40.95   21.05   18.98   ~ 5 0
74 SDSS J133239.93+503223.8 G 13 32 39.937 +50 32 23.88   22.60   20.57   ~ 2 0
75 DES J133240.34+503449.6 rG 13 32 40.3393712088 +50 34 49.345810644   21.30   19.34   ~ 4 0
76 DES J133240.50+503539.8 GiC 13 32 40.4996051976 +50 35 39.594660144   20.57   18.41   ~ 5 0
77 SDSS J133240.51+503216.0 G 13 32 40.519 +50 32 16.00   23.67   21.59   ~ 2 0
78 DES J133240.58+503315.6 rG 13 32 40.5832054944 +50 33 15.375499632   21.56   19.39   ~ 4 0
79 DES J133240.95+503346.5 rG 13 32 40.9528819416 +50 33 46.360395468   20.02   17.78   ~ 7 0
80 SDSS J133241.47+503210.6 G 13 32 41.471 +50 32 10.68   21.82   20.45   ~ 2 0
81 DES J133242.02+503434.9 GiC 13 32 42.021 +50 34 34.67   19.62   18.05   ~ 4 0
82 SDSS J133242.21+503230.0 G 13 32 42.217 +50 32 30.18   22.48   20.29   ~ 2 0
83 SDSS J133242.35+503233.0 G 13 32 42.354 +50 32 33.09   22.68   20.63   ~ 2 0
84 DES J133243.29+502926.4 GiC 13 32 43.2951061968 +50 29 26.111184324   21.11   18.85   ~ 4 0
85 DES J133243.42+503329.0 rG 13 32 43.4288095344 +50 33 28.737013788   20.81   18.52   ~ 5 0
86 DES J133243.77+503114.8 rG 13 32 43.7684879712 +50 31 14.574567000   21.29   19.23   ~ 6 0
87 DES J133244.76+503326.2 GiC 13 32 44.769 +50 33 26.01   21.92   19.68   ~ 3 0
88 MCXC J1332.7+5032 ClG 13 32 44.8 +50 32 24           ~ 102 0
89 DES J133244.95+503157.4 GiC 13 32 44.958 +50 31 57.21   21.94   19.82   ~ 4 0
90 DES J133245.35+503324.8 rG 13 32 45.3532171392 +50 33 24.632166096   21.28   19.27   ~ 6 0
91 DES J133245.93+503204.9 rG 13 32 45.9291459048 +50 32 04.711345548   21.49   19.30   ~ 5 0
92 SDSS J133246.35+503641.4 G 13 32 46.357 +50 36 41.48   20.89   18.83   ~ 3 0
93 DES J133246.89+503148.7 GiC 13 32 46.901 +50 31 48.49   22.07   20.34   ~ 3 0
94 SDSS J133246.99+503201.9 G 13 32 46.997 +50 32 02.03   21.62   19.59   ~ 3 0
95 DES J133247.91+503209.8 GiC 13 32 47.917 +50 32 09.62   21.88   19.79   ~ 3 0
96 SDSS J133248.47+502806.7 G 13 32 48.472 +50 28 06.68   21.52   19.21   ~ 2 0
97 DES J133248.70+503155.1 GiC 13 32 48.711 +50 31 54.88   22.05   19.73   ~ 3 0
98 DES J133248.71+503121.9 rG 13 32 48.7118334528 +50 31 21.678732336   21.44   19.18   ~ 6 0
99 SDSS J133249.24+503131.1 G 13 32 49.247 +50 31 31.13   22.14   19.90   ~ 2 0
100 SDSS J133249.28+502850.3 G 13 32 49.280 +50 28 50.35   22.10   20.66   ~ 2 0
101 SDSS J133249.31+503355.9 G 13 32 49.3131213768 +50 33 55.935299592   21.80   19.91   ~ 3 0
102 SDSS J133249.72+502841.6 G 13 32 49.728 +50 28 41.64   20.06   18.49   ~ 2 0
103 SDSS J133249.99+503225.9 G 13 32 49.993 +50 32 26.00   21.89   19.89   ~ 3 0
104 SDSS J133250.03+503353.8 G 13 32 50.033 +50 33 53.84   21.37   20.25   ~ 2 0
105 SDSS J133250.61+502752.3 G 13 32 50.616 +50 27 52.32   20.85   19.42   ~ 2 0
106 DES J133250.71+502747.0 GiC 13 32 50.729 +50 27 46.73   21.37   19.40   ~ 4 0
107 DES J133251.01+503309.0 GiC 13 32 51.031 +50 33 08.36   21.35   19.31   ~ 5 0
108 SDSS J133251.09+502745.8 G 13 32 51.0880321536 +50 27 45.774819252   21.40   19.54   ~ 2 0
109 SDSS J133251.42+503304.7 G 13 32 51.424 +50 33 04.76   19.47   17.94   ~ 2 0
110 SDSS J133251.50+503310.3 G 13 32 51.501 +50 33 10.31   21.58   19.62   ~ 2 0
111 SDSS J133251.79+502713.5 G 13 32 51.7846263528 +50 27 13.440137220   20.09   17.89   ~ 3 0
112 DES J133252.08+503134.2 BiC 13 32 52.096 +50 31 34.04   19.69   17.36   ~ 10 0
113 SDSS J133252.21+503121.8 G 13 32 52.212 +50 31 21.81   22.02   19.99   ~ 2 0
114 DES J133252.31+502743.0 GiC 13 32 52.330 +50 27 42.81   22.43   20.54   ~ 3 0
115 SDSS J133252.41+503112.8 G 13 32 52.411 +50 31 12.85   22.30   20.15   ~ 3 0
116 NVSS J133253+503137 rG 13 32 52.9193654568 +50 31 46.039341036   20.54   18.26   ~ 14 1
117 SDSS J133253.10+503135.5 G 13 32 53.0970153048 +50 31 35.470017696   21.09   18.76   ~ 2 0
118 SDSS J133253.23+503028.9 G 13 32 53.2278884376 +50 30 28.898233668   20.76   18.48   ~ 2 0
119 SDSS J133253.56+502735.9 G 13 32 53.565 +50 27 35.99   22.21   20.33   ~ 2 0
120 SDSS J133253.68+503053.3 G 13 32 53.689 +50 30 53.30   20.48   18.90   ~ 3 0
121 SDSS J133253.74+502656.2 G 13 32 53.749 +50 26 56.26   22.32   20.78   ~ 2 0
122 DES J133253.91+502957.9 GiC 13 32 53.921 +50 29 57.75   21.87   19.75   ~ 4 0
123 SDSS J133253.93+503220.6 G 13 32 53.937 +50 32 20.66   20.68   19.00   ~ 3 0
124 SDSS J133254.86+503027.8 G 13 32 54.860 +50 30 27.81   21.57   20.51   ~ 3 0
125 DES J133254.92+503314.9 GiC 13 32 54.939 +50 33 14.71   21.86   19.71   ~ 4 0
126 SDSS J133255.00+503127.6 G 13 32 55.001 +50 31 27.64           ~ 1 0
127 SDSS J133255.15+503125.4 G 13 32 55.1431598040 +50 31 25.381681356   20.82   18.60   ~ 3 0
128 DES J133255.59+503128.7 rG 13 32 55.5952761264 +50 31 28.424991000   21.09   18.84   ~ 4 0
129 SDSS J133255.63+503055.7 G 13 32 55.636 +50 30 55.75   20.17   18.67   ~ 2 0
130 SDSS J133256.07+503017.4 G 13 32 56.077 +50 30 17.45   19.89   18.88   ~ 3 0
131 SDSS J133259.31+503019.9 G 13 32 59.319 +50 30 19.90   22.62   20.55   ~ 2 0
132 DES J133259.57+502927.8 GiC 13 32 59.589 +50 29 27.61   21.45   19.25   ~ 3 0
133 SDSS J133259.75+503005.3 G 13 32 59.751 +50 30 05.37   21.68   20.60   ~ 3 0
134 SDSS J133302.05+502717.0 G 13 33 02.0442690504 +50 27 16.998661584   21.91   19.73   ~ 3 0
135 DES J133302.06+502928.2 GiC 13 33 02.0652499296 +50 29 27.972395556   20.14   17.89   ~ 8 0
136 SDSS J133302.11+503009.2 G 13 33 02.117 +50 30 09.22   22.74   20.67   ~ 2 0
137 SDSS J133302.70+503142.2 G 13 33 02.706 +50 31 42.27   20.52   18.90   ~ 2 0
138 [RMO2003] ACO 1758 6 rG 13 33 03.060 +50 29 28.24           ~ 1 0
139 SDSS J133303.67+502825.2 G 13 33 03.675 +50 28 25.30   21.41   19.92   ~ 2 0
140 DES J133306.70+503124.3 GiC 13 33 06.7136289792 +50 31 24.091576248   20.47   18.50   ~ 4 0
141 SDSS J133307.42+502919.5 G 13 33 07.428 +50 29 19.55   22.28   20.15   ~ 2 0
142 SDSS J133307.48+503200.6 G 13 33 07.484 +50 32 00.68   21.02   18.94   ~ 3 0
143 SDSS J133309.83+502833.2 G 13 33 09.831 +50 28 33.28   20.84   19.71   ~ 2 0
144 SDSS J133309.90+502902.2 G 13 33 09.901 +50 29 02.28   22.07   20.12   ~ 2 0
145 SDSS J133310.19+502851.2 G 13 33 10.196 +50 28 51.26   20.99   19.20   ~ 3 0
146 DES J133310.70+503115.8 GiC 13 33 10.7074351032 +50 31 15.579867108   20.81   18.76   ~ 4 0
147 SDSS J133310.92+502853.6 G 13 33 10.929 +50 28 53.67   21.75   19.71   ~ 2 0
148 SDSS J133312.98+502901.2 rG 13 33 12.9815225400 +50 29 01.228467048   20.51   18.37   ~ 2 0
149 SDSS J133313.83+502955.3 G 13 33 13.834 +50 29 55.31   22.79   20.68   ~ 2 0
150 ACO 2146 ClG 15 56 04.7 +66 20 24           ~ 172 0
151 ACO 3667 ClG 20 12 33.68 -56 50 26.3           ~ 615 1
152 ACO 2345 ClG 21 27 09.80 -12 09 58.8           ~ 129 1

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2023.09.23-07:43:39

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