2015A&A...584A.125C

Query : 2015A&A...584A.125C

2015A&A...584A.125C - Astronomy and Astrophysics, volume 584A, 125-125 (2015/12-1)

Deconstructing the Antlia cluster core.

CASO J.P. and RICHTLER T.

Abstract (from CDS):

The present literature does not give a satisfactory answer to the question about the nature of the ``Antlia galaxy cluster''. The radial velocities of galaxies found in the region around the giant ellipticals NGC 3258/3268 range from about 1000km/s to 4000km/s. We characterise this region and its possible kinematical and population substructure. We have obtained VLT-VIMOS multi-object spectra of the galaxy population in the inner part of the Antlia cluster and measure radial velocities for 45 potential members. We supplement our galaxy sample with literature data, ending up with 105 galaxy velocities. We find a large radial velocity dispersion for the entire sample as reported in previous papers. However, we find three groups at about 1900km/s, 2800km/s, and 3700km/s, which we interpret as differences in the recession velocities rather than peculiar velocities. The high radial velocity dispersion of galaxies in the Antlia region reflects a considerable extension along the line of sight.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: Antlia cluster - galaxies: distances and redshifts

Nomenclature: Table A.1: ANTL JHHMMSS+DDMMSS N=18 added. Table A.2: ANTL JHHMMSS+DDMMSS N=11 added.

Simbad objects: 135

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Number of rows : 135
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 NAME SH2 HII 03 22 38.0 -37 18 47           ~ 8 0
2 NGC 1316 BL? 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1387 1
3 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 1827 0
4 LEDA 30566 GiG 10 25 05.38 -35 58 59.9   16.3       ~ 8 0
5 NGC 3249 EmG 10 26 22.1962915536 -34 57 49.056441084   13.86   12.54   ~ 29 0
6 ESO 375-25 GiG 10 26 44.79 -36 51 48.6   16.40   15.56   ~ 10 0
7 ESO 375-26 EmG 10 27 02.497 -36 13 41.54   14.56   13.15   ~ 59 0
8 ESO 375-28 GiG 10 27 20.4159603480 -35 16 27.218367084   15.15   13.71   ~ 20 0
9 6dFGS gJ102733.0-355911 GiG 10 27 33.0248526936 -35 59 10.826509740   15.0       ~ 16 0
10 2MASX J10275735-3549177 GiG 10 27 57.3756891264 -35 49 17.824461816   15.9       ~ 10 0
11 LEDA 82992 EmG 10 28 03.131 -35 26 31.75   15.2       ~ 13 0
12 LEDA 82994 GiG 10 28 06.9 -35 35 24   19.2       ~ 8 0
13 2MASX J10280807-3538249 GiG 10 28 08.0852495496 -35 38 24.896723496   15.7       ~ 13 0
14 LEDA 82999 GiG 10 28 12.1 -35 32 31   18.5       ~ 7 0
15 LEDA 83001 GiG 10 28 16.19 -35 32 01.9   15.9       ~ 6 0
16 ANTL J102817-353552 G 10 28 17.00 -35 35 52.8           ~ 1 0
17 ESO 375-32 GiG 10 28 19.1742113688 -35 27 16.452146844   14.56 13.64 13.00   ~ 23 0
18 2MASX J10281922-3545309 GiG 10 28 19.2269991696 -35 45 30.777023952   15.2       ~ 18 0
19 ANTL J102820-354236 G 10 28 19.68 -35 42 36.0           ~ 2 0
20 [FS90] Antlia 83 GiG 10 28 23.0 -35 30 57   17.4       ~ 5 0
21 ANTL J102823-352754 G 10 28 23.80 -35 27 54.0           ~ 1 0
22 ESO 375-34 GiG 10 28 23.9579018952 -35 31 46.674398892   15.10   13.71   ~ 22 0
23 LEDA 83007 GiG 10 28 24.0 -35 34 24   19.3       ~ 7 0
24 [FS90] Antlia 87 GiG 10 28 25.20 -35 14 34.8   17.2       ~ 5 0
25 LEDA 83009 Sy1 10 28 28.0140690216 -35 30 54.010066536   16.70   15.53   ~ 11 0
26 ANTL J102829-351510.8 G 10 28 29.30 -35 15 10.8           ~ 2 0
27 LEDA 83015 GiG 10 28 31.8 -35 40 39   16.7       ~ 5 0
28 2MASX J10283195-3542179 GiG 10 28 31.9374198840 -35 42 18.483744528   14.8       ~ 19 0
29 LEDA 83019 GiG 10 28 34.20696 -35 27 38.8800   17.0       ~ 11 0
30 ANTL J102838-352027 G 10 28 38.20 -35 20 27.6           ~ 1 0
31 LEDA 83024 GiG 10 28 45.1 -35 34 40   19.8       ~ 8 0
32 NGC 3257 GiG 10 28 47.1211653816 -35 39 29.380364640   14.05 12.54 12.53   ~ 48 0
33 LEDA 83026 GiG 10 28.8 -35 10   18.2       ~ 9 0
34 [FS90] Antlia 110 GiG 10 28 53.0 -35 35 34   17.3       ~ 8 0
35 [FS90] Antlia 109 GiG 10 28 53.0 -35 32 52           ~ 6 0
36 2MASX J10285311-3519089 GiG 10 28 53.115 -35 19 08.98   16.5       ~ 8 0
37 NGC 3258 EmG 10 28 53.588 -35 36 19.98   12.50 11.72 10.86   ~ 187 0
38 LEDA 83040 GiG 10 29 01.6 -35 34 01   17.8       ~ 8 0
39 LEDA 83041 GiG 10 29 02.7 -35 40 29   18.2       ~ 8 0
40 ANTL J102904-352320 G 10 29 04.60 -35 23 20.4           ~ 1 0
41 ANTL J102905-352146 G 10 29 05.50 -35 21 46.8           ~ 1 0
42 NGC 3260 GiG 10 29 06.3956235984 -35 35 42.453138552   13.72 14.39 12.11   ~ 56 0
43 ANTL J102910-353920.1 G 10 29 10.30 -35 39 20.1           ~ 3 0
44 MCG-06-23-034 GiG 10 29 11.0589500280 -35 41 16.663424100   15       ~ 13 0
45 2MASX J10291155-3539289 GiG 10 29 11.5685891400 -35 39 28.758466224   15.9       ~ 10 0
46 2MASX J10291308-3529149 GiG 10 29 13.1218055040 -35 29 14.521783524   15.5       ~ 8 0
47 ANTL J102914-353923.6 G 10 29 14.40 -35 39 23.6           ~ 3 0
48 LEDA 83053 GiG 10 29 14.8 -35 25 55   18.4       ~ 9 0
49 LEDA 83052 GiG 10 29 15.0 -35 41 34   18.6       ~ 7 0
50 [FS90] Antlia 139 GiG 10 29 15.60 -35 04 04.8   16.7       ~ 3 0
51 LEDA 83055 GiG 10 29 17.1 -35 35 02   19.0       ~ 5 0
52 [FS90] Antlia 142 GiG 10 29 20.16 -35 35 09.6   17.6       ~ 4 0
53 ANTL J102926-351051 G 10 29 26.90 -35 10 51.6           ~ 1 0
54 LEDA 83067 Sy2 10 29 28.3988149776 -34 40 21.816149556   16.0       ~ 9 0
55 ESO 375-41 EmG 10 29 30.9876894552 -35 15 35.675092260   14.61   13.27   ~ 26 0
56 ANTL J102936-352606 G 10 29 36.00 -35 26 06.0           ~ 1 0
57 ANTL J102936-353336 G 10 29 36.70 -35 33 36.0           ~ 1 0
58 ANTL J102937-353552 G 10 29 37.20 -35 35 52.8           ~ 1 0
59 2MASX J10294066-3525084 G 10 29 40.6627180488 -35 25 08.484922848   18.50   16.74   ~ 2 0
60 ACO S 636 ClG 10 29 41.0957 -35 19 32.908           ~ 225 0
61 2MASX J10294129-3517244 GiG 10 29 41.298 -35 17 24.40   17.3       ~ 6 0
62 LEDA 83076 GiG 10 29 42.9 -35 29 48   18.5       ~ 7 0
63 LEDA 83097 G 10 29 45.3 -35 37 04           ~ 3 0
64 2MASX J10294571-3542213 GiG 10 29 45.7711498680 -35 42 20.751330636   17.4       ~ 12 0
65 2MASX J10294837-3525077 GiG 10 29 48.4150839960 -35 25 07.684490712   15.1       ~ 20 0
66 NGC 3267 GiG 10 29 48.6040695000 -35 19 20.428071096   13.50 13.35 11.85   ~ 40 0
67 IC 2584 GiG 10 29 51.4862944440 -34 54 42.110897508   13.62 12.80 12.28   ~ 28 0
68 [FS90] Antlia 173 GiG 10 29 51.60 -35 10 04.8   15.8       ~ 4 0
69 LEDA 651967 G 10 29 51.6182326888 -35 12 09.837309505           ~ 2 0
70 2MASX J10295304-3522307 GiG 10 29 53.0469155808 -35 22 30.782113752   16.0       ~ 16 0
71 2MASX J10295436-3519148 GiG 10 29 54.364 -35 19 14.80   17.0       ~ 11 0
72 LEDA 83087 GiG 10 29 54.4 -35 17 22   18.6       ~ 7 0
73 NGC 3269 GiG 10 29 57.0426202656 -35 13 27.888395700   13.24 13.51 11.73   ~ 44 0
74 [FS90] Antlia 186 GiG 10 29 59.52 -35 18 10.8   19.4       ~ 5 0
75 NGC 3268 EmG 10 30 00.6490581240 -35 19 31.519591284   12.57 11.77 10.68   ~ 154 0
76 2MASX J10300111-3548498 GiG 10 30 01.1182520136 -35 48 50.107730688   17.0       ~ 8 0
77 LEDA 83098 GiG 10 30 02.6 -35 24 35   19.1       ~ 7 0
78 ANTL J103003-350701 G 10 30 03.80 -35 07 01.2           ~ 1 0
79 [FS90] Antlia 192 GiG 10 30 05.0677071672 -35 20 31.964169084   18.9   15.7 16.39 ~ 14 0
80 LEDA 83103 GiG 10 30 06.1 -35 23 27   18.3       ~ 8 0
81 [FS90] Antlia 195 GiG 10 30 06.48 -35 18 25.2   19.6       ~ 4 0
82 LGG 202 GrG 10 30 08 -35 18.5           ~ 4 0
83 ANTL J103013.7-352458.6 AG? 10 30 13.80 -35 24 58.3           ~ 5 0
84 2MASX J10301828-3511487 GiG 10 30 18.2408185632 -35 11 48.885011304   16.1       ~ 15 0
85 [FS90] Antlia 205 GiG 10 30 18.4 -35 24 43   18.9       ~ 5 0
86 [FS90] Antlia 209 GiG 10 30 19.4 -35 34 48   19.2       ~ 5 0
87 LEDA 83120 GiG 10 30 20.6 -35 35 32   16.1       ~ 7 0
88 ANTL J103021.4-353105.2 G? 10 30 21.3 -35 31 06           ~ 4 0
89 LEDA 83121 GiG 10 30 21.8 -35 12 06   19.3       ~ 7 0
90 ANTL J103022.0-353805.3 G 10 30 22.00 -35 38 05.3           ~ 3 0
91 2MASX J10302300-3510213 GiG 10 30 23.0057491368 -35 10 21.652927068   17.4       ~ 7 0
92 LEDA 30985 EmG 10 30 23.7842182320 -35 15 13.322385216   15.1       ~ 13 0
93 LEDA 83130 GiG 10 30 25.3 -35 13 18   18.5       ~ 8 0
94 LEDA 83128 EmG 10 30 25.3146042600 -35 33 48.515922252   15.5       ~ 19 0
95 MCG-06-23-043 EmG 10 30 25.7964678768 -35 06 28.870330500   15   14.08   ~ 19 0
96 NGC 3271 BiC 10 30 26.5035080808 -35 21 34.063890048   12.72 11.73 11.03   ~ 74 1
97 NGC 3273 GiG 10 30 29.1806574792 -35 36 38.199704832   13.50 12.93 11.89   ~ 50 0
98 [FS90] Antlia 227 GiG 10 30 31.4 -35 23 06   19.0       ~ 5 0
99 LEDA 83133 GiG 10 30 31.9 -35 14 40   18.6       ~ 8 0
100 ANTL J103033.1-352638.4 G 10 30 33.30 -35 26 38.6           ~ 4 0
101 [FS90] Antlia 231 GiG 10 30 34.56 -35 23 13.2   16.3       ~ 4 0
102 ANTL J103036.4-353047.2 G 10 30 36.40 -35 30 47.2           ~ 3 0
103 ANTL J103037.4-352708.3 G 10 30 37.50 -35 27 08.8           ~ 4 0
104 ANTL J103041-351250 G 10 30 41.00 -35 12 50.4           ~ 1 0
105 ANTL J103042-350914 G 10 30 42.20 -35 09 14.4           ~ 1 0
106 LEDA 83144 GiG 10 30 45.0 -35 21 34   16.2       ~ 5 0
107 ANTL J103045-351601 G 10 30 45.80 -35 16 01.2           ~ 1 0
108 ANTL J103047-353918 G 10 30 46.70 -35 39 18.0           ~ 3 0
109 LEDA 83148 GiG 10 30 47.5 -35 32 22   18.2       ~ 6 0
110 ANTL J103049-352031 G 10 30 49.40 -35 20 31.2           ~ 1 0
111 NGC 3275 EmG 10 30 51.7808470128 -36 44 13.204971312   12.54   11.12   ~ 62 0
112 IC 2587 EmG 10 30 59.6162919192 -34 33 46.544658768   13.38 12.95 11.90   ~ 39 0
113 2MASX J10310321-3440186 GiG 10 31 03.2579413008 -34 40 18.403372776   16.0       ~ 8 0
114 ESO 375-53 Sy2 10 31 24.1774670640 -35 13 13.700128692   14.61   13.30   ~ 32 0
115 ESO 375-54 GiG 10 31 48.168 -36 01 54.70   15.22   13.74   ~ 24 0
116 NGC 3281 Sy2 10 31 52.086 -34 51 13.40   12.62 14.02 11.17   ~ 364 0
117 MCG-06-23-049 GiG 10 31 52.1635837944 -35 12 17.434244016   15   14.21   ~ 18 0
118 ESO 375-58 GiG 10 31 55.7164689528 -35 24 35.182468368   13.99   12.50   ~ 33 0
119 ESO 375-57 GiG 10 31 56.2043113224 -34 59 28.746934440   14.98   13.65   ~ 18 0
120 LEDA 83207 GiG 10 31 56.7 -34 53 52   19.1       ~ 4 0
121 [FS90] Antlia 309 GiG 10 31 59.04 -35 11 45.6   14.5       ~ 3 0
122 6dFGS gJ103208.5-344030 GiG 10 32 08.45 -34 40 29.6   16.29   14.99   ~ 10 0
123 [FS90] Antlia 321 GiG 10 32 12.24 -34 40 08.4   15.3       ~ 3 0
124 2MFGC 8174 GiG 10 32 14.469 -35 15 33.88   16.2       ~ 11 0
125 ESO 375-60 EmG 10 32 24.910 -34 59 53.89   15.42   14.01   ~ 29 0
126 ESO 375-63 EmG 10 32 59.5458915696 -34 53 10.328804700   14.30       ~ 23 0
127 ESO 375-64 EmG 10 34 00.7143332064 -35 16 57.131748948   14.66   13.37   ~ 23 0
128 NGC 3289 GiG 10 34 07.4195648472 -35 19 24.030465024   13.68 14.13 12.35   ~ 41 0
129 ESO 375-67 EmG 10 34 13.696 -36 14 00.62   15.74   14.79   ~ 13 0
130 [FS90] Antlia 353 GiG 10 34 55.44 -35 28 19.2   15.5       ~ 3 0
131 2MASX J10372287-3521371 GiG 10 37 22.8528128184 -35 21 37.442915244   15.6       ~ 19 0
132 NAME Virgo Cluster ClG 12 26 32.1 +12 43 24           ~ 6644 0
133 IC 3486 GiG 12 33 14.026 +12 51 27.77   15.3       ~ 56 1
134 IC 3492 GiC 12 33 19.772 +12 51 12.77   15 15.30     ~ 90 0
135 NGC 4636 LIN 12 42 49.8333280080 +02 41 15.951929028   12.62 11.84     ~ 1117 1

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