2007A&A...464L..21B

Query : 2007A&A...464L..21B

2007A&A...464L..21B - Astronomy and Astrophysics, volume 464, L21-24 (2007/3-3)

Globular clusters and dwarf galaxies in Fornax. I. Kinematics in the cluster core from multi-object spectroscopy.

BERGOND G., ATHANASSOULA E., LEON S., BALKOWSKI C., CAYATTE V., CHEMIN L., GUZMAN R., MEYLAN G. and PRUGNIEL P.

Abstract (from CDS):

We acquired radial velocities of a significant number of globular clusters (GCs) on wide fields between galaxies in the nearby Fornax cluster of galaxies, in order to derive their velocity dispersion radial profile and to probe the dynamics of the cluster. We used FLAMES on the VLT to obtain accurate velocities for 149 GCs, within a ≃500x150kpc strip centered on NGC 1399, the Fornax central galaxy. These objects are at the very bright tail (MV≲-9.5) of the GC luminosity function, overlapping the so-called ``ultra-compact dwarfs'' magnitude range. Eight of the brightest FLAMES-confirmed members indeed show hints of resolution in the subarcsecond pre-imaging data we used for selecting the ∼500 targets for FLAMES spectroscopy. Ignoring the GCs around galaxies by applying 3d25 diameter masks, we find 61 GCs of 20.0≤V≤22.2 lying in the intra-cluster (IC) medium. The velocity dispersion of the population of ICGCs is 200km/s at ∼150kpc from the central NGC 1399 and rises to nearly 400km/s at 200kpc, a value which compares with the velocity dispersion of the population of dwarf galaxies, thought to be infalling from the surroundings of the cluster.

Abstract Copyright: ∼

Journal keyword(s): galaxies: star clusters - galaxies: kinematics and dynamics - galaxies: elliptical and lenticular, cD - galaxies: dwarf - galaxies: individual: Fornax cluster

VizieR on-line data: <Available at CDS (J/A+A/464/L21): table1.dat table2.dat table3.dat>

Nomenclature: Table 1: [BAL2007] gcNNN.NNNa, [BAL2007] gcNNNNww, N=149. Table 2: [BAL2007] ucNNN.NN, N=6, [BAL2007] ucdA (Nos A-B). Table 3: [BAL2007] newdwN (Nos 1-4).

CDS comments: In table 1 there are 2 objects designated as gc172.2, so we have added in the format a letter a and b to differentiate them.

Simbad objects: 184

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Number of rows : 184
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 Mayall II GlC 00 32 46.5323801712 +39 34 40.504803060   14.564 13.807 13.208 12.684 ~ 389 1
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12650 1
3 NGC 1316 BL? 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1387 1
4 [BAL2007] gc1375s GlC 03 35 17.214 -35 16 07.65           ~ 1 0
5 [BAL2007] gc1375e GlC 03 35 18.768 -35 15 53.06           ~ 1 0
6 [BAL2007] gc325.6 GlC 03 35 18.8132 -35 12 50.232           ~ 3 0
7 [BAL2007] gc346.6 GlC 03 35 21.0313919880 -35 13 53.181712920           ~ 2 0
8 [BAL2007] gc323.6 GlC 03 35 21.5434726632 -35 14 42.173441952           ~ 3 0
9 [BAL2007] gc30.60 GlC 03 35 21.8480 -35 14 04.519           ~ 2 0
10 GALEXASC J033535.69-351726.2 AG? 03 35 35.67 -35 17 26.5           ~ 3 1
11 [BAL2007] gc144.6 GlC 03 35 38.864 -35 21 53.40           ~ 3 0
12 [BAL2007] gc290.6 GlC 03 35 42.523 -35 13 51.71           ~ 3 0
13 LEDA 13287 LSB 03 35 42.79 -35 20 17.2   17.2 16.85     ~ 29 1
14 [BAL2007] gc302.6 GlC 03 35 50.492 -35 15 24.22           ~ 2 0
15 [BAL2007] gc21.70 GlC 03 35 59.5848 -35 26 56.850           ~ 3 0
16 [BAL2007] gc69.70 GlC 03 36 01.104 -35 25 43.07           ~ 2 0
17 [BAL2007] gc39.70 GlC 03 36 01.1270 -35 26 22.505           ~ 3 0
18 [BAL2007] gc7.700 GlC 03 36 03.886 -35 27 26.42           ~ 2 0
19 LEDA 74761 LSB 03 36 03.94 -35 23 20.5   17.7 17.34     ~ 26 1
20 [BAL2007] gc4.700 GlC 03 36 06.204 -35 27 32.82           ~ 2 0
21 [BAL2007] gc70.70 GlC 03 36 09.122 -35 25 43.69           ~ 2 0
22 [BAL2007] gc114.7 GlC 03 36 10.836 -35 24 22.46           ~ 2 0
23 [BAL2007] gc12.70 GlC 03 36 12.131 -35 27 07.71           ~ 2 0
24 [BAL2007] gc235.7 GlC 03 36 12.687 -35 19 11.57           ~ 3 0
25 [BAL2007] gc173.7 GlC 03 36 23.575 -35 21 52.32           ~ 2 0
26 [JPB2015] 054.1127656-35.2924980 GlC 03 36 27.0806032200 -35 17 33.161545896           ~ 3 0
27 [BAL2007] uc329.7 AG? 03 36 27.6956643984 -35 14 13.927797384           ~ 11 2
28 [JPB2015] 054.1254728-35.2982542 GlC 03 36 30.1293821928 -35 17 53.884451472           ~ 3 0
29 [BAL2007] gc18.70 GlC 03 36 31.257 -35 26 58.22           ~ 2 0
30 [JPB2015] 054.1365462-35.3083119 GlC 03 36 32.7878712600 -35 18 30.102114780           ~ 4 0
31 FDS J033634.31-351932.48 GlC 03 36 34.3293975864 -35 19 32.367377712           ~ 8 1
32 [JPB2015] 054.1504657-35.3106218 GlC 03 36 36.1275945720 -35 18 38.401232760           ~ 3 0
33 [FDE2007] J033636.31-352158.6 GlC 03 36 36.316 -35 21 58.68           ~ 3 0
34 FCC 171 LSB 03 36 37.252 -35 23 09.33           ~ 26 2
35 [JPB2015] 054.2034679-35.3795052 GlC 03 36 48.8344491768 -35 22 46.312346820           ~ 3 0
36 [BAL2007] gc220.8 GlC 03 36 50.357 -35 20 16.82           ~ 2 0
37 [BAL2007] gc41.40 GlC 03 36 51.6531288048 -35 30 38.791905804           ~ 8 1
38 [BAL2007] gc57.40 GlC 03 36 53.1930 -35 30 14.457           ~ 4 0
39 MCG-06-09-008 GiP 03 36 54.3158470008 -35 22 28.948080864   14.81       ~ 95 2
40 [BAL2007] gc1387sw GlC 03 36 55.1341 -35 30 35.941           ~ 4 0
41 [JPB2015] 054.2305973-35.4938023 GlC 03 36 55.3533955776 -35 29 37.801897296           ~ 4 0
42 [JPB2015] 054.2322522-35.4893231 GlC 03 36 55.7499186192 -35 29 21.658947648           ~ 3 0
43 NGC 1387 Sy2 03 36 57.0337458600 -35 30 23.675934060 12.18 11.75 10.69 10.16   ~ 262 1
44 [BAL2007] gc76.40 GlC 03 36 57.2693745096 -35 29 56.910988068           ~ 5 0
45 [BAL2007] gc362.5 GlC 03 36 58.015 -35 34 31.98           ~ 2 0
46 FDS J033658.33-353207.15 GlC 03 36 58.3450056210 -35 32 07.039466579           ~ 4 0
47 LEDA 2801073 GiC 03 36 58.5 -35 29 45           ~ 5 1
48 [BAL2007] gc1387se GlC 03 36 58.7153204136 -35 30 36.350413488           ~ 4 0
49 [BAL2007] gc90.40 GlC 03 36 59.5878 -35 29 39.238           ~ 3 0
50 FDS 11 0306 LSB 03 36 59.8 -35 20 36           ~ 13 1
51 [JPB2015] 054.2501999-35.5100184 GlC 03 37 00.0568954008 -35 30 36.168722028           ~ 4 0
52 [BAL2007] gc19.40 GlC 03 37 00.3471 -35 31 13.881           ~ 3 0
53 [BAL2007] uc257.5 GiC 03 37 03.2455003608 -35 38 04.385867820   19.85 19.31     ~ 34 1
54 [JPB2015] 054.2666783-35.5045616 GlC 03 37 04.0069621752 -35 30 16.493015196           ~ 4 0
55 [BAL2007] gc271.5 GlC 03 37 05.708 -35 37 32.09           ~ 4 0
56 [BAL2007] gc43.40 GlC 03 37 13.122 -35 30 41.35           ~ 2 0
57 LEDA 74790 LSB 03 37 17.98 -35 41 54.8   18.2 17.80     ~ 23 1
58 [BAL2007] gc398.5 GlC 03 37 21.128 -35 32 57.02           ~ 2 0
59 [BAL2007] gc155.4 GlC 03 37 21.301 -35 27 53.20           ~ 2 0
60 [FDE2007] J033726.23-354106.1 GlC 03 37 26.253 -35 41 05.69           ~ 3 0
61 [BAL2007] gc46.30 GlC 03 37 27.5769165168 -35 30 12.494779020       19.55   ~ 6 0
62 [BAL2007] gc401.6 GlC 03 37 33.900 -35 32 47.71       20.69   ~ 3 0
63 FCOS 2-2094 GlC 03 37 42.238 -35 30 33.98     20.71     ~ 7 0
64 FDS J033743.56-352251.47 GlC 03 37 43.5725098896 -35 22 51.470993208           ~ 7 0
65 [BAL2007] gc85.30 GlC 03 37 45.0801427632 -35 29 01.295593656           ~ 6 0
66 [BAL2007] gc381.6 GlC 03 37 46.710 -35 34 42.60     20.81 20.39   ~ 6 0
67 [FDE2007] J033746.77-353923.8 GlC 03 37 46.793 -35 39 23.54           ~ 3 0
68 [BAL2007] gc133.3 GlC 03 37 47.017 -35 27 47.96           ~ 2 0
69 [BAL2007] gc311.6 GlC 03 37 59.430 -35 36 09.59       20.58   ~ 3 0
70 FDS J033759.54-353625.26 GlC 03 37 59.540 -35 36 25.26       20.78   ~ 4 0
71 [JPB2015] 054.5184643-35.4697943 GlC 03 38 04.4458277016 -35 28 11.428748508       20.82   ~ 5 0
72 NAME UCD-FORS 81 GlC 03 38 06.3040671264 -35 28 58.550357136   18.85 19.31 18.80 18.18 ~ 39 1
73 [BAL2007] gc466.7 GlC 03 38 08.804 -35 32 25.53           ~ 2 0
74 [BAL2007] gc445.7 GlC 03 38 09.2451322056 -35 35 06.907116372       20.15   ~ 7 0
75 NAME UCD-FORS 52 GlC 03 38 11.6974597968 -35 27 16.218253728     20.81   19.65 ~ 10 0
76 FDS J033813.07-353352.73 GlC 03 38 13.071 -35 33 52.73           ~ 5 0
77 FDS J033813.41-353737.90 GlC 03 38 13.407 -35 37 37.89           ~ 3 0
78 [BAL2007] gc156.2 GlC 03 38 13.538 -35 28 55.89           ~ 2 0
79 [JPB2015] 054.5590855-35.4454027 GlC 03 38 14.1941988480 -35 26 43.596636036     21.04     ~ 9 0
80 [BAL2007] gc373.7 GlC 03 38 14.760 -35 33 25.29       20.67   ~ 4 0
81 [BAL2007] gc102.2 GlC 03 38 16.650 -35 29 35.20       21.04   ~ 4 0
82 [JPB2015] 054.5711568-35.4418764 GlC 03 38 17.0873774160 -35 26 30.920222868     20.83 20.44   ~ 20 0
83 LEDA 74806 LSB 03 38 18.80 -35 31 49.4   17.3 17.18     ~ 36 1
84 FDS J033823.27-352632.95 GlC 03 38 23.2873407360 -35 26 32.973854604     21.205   20.17 ~ 6 0
85 GALEXMSC J033823.41-353953.3 AG? 03 38 23.42 -35 39 53.3           ~ 4 1
86 [BAL2007] gc154.7 GlC 03 38 26.570 -35 41 42.80       20.41   ~ 3 0
87 [BAL2007] gc212.2 GlC 03 38 28.83 -35 28 47.1           ~ 4 0
88 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1570 1
89 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 1827 0
90 FDS J033830.16-352847.93 GlC 03 38 30.164 -35 28 47.93           ~ 4 0
91 [BAL2007] gc410.7 GlC 03 38 30.370 -35 34 20.90       20.34   ~ 3 0
92 [BAL2007] gc555.2 GlC 03 38 30.720 -35 24 40.69     21.15 20.53   ~ 7 0
93 [BAL2007] gc216.7 GlC 03 38 30.760 -35 39 56.70       20.33   ~ 3 0
94 CXOU J033837.2-352812 GlC 03 38 37.218 -35 28 12.83           ~ 6 0
95 LEDA 74817 LSB 03 38 37.7 -35 45 27   19.2 19.21     ~ 30 1
96 [BAL2007] gc613.2 GlC 03 38 37.978 -35 23 32.57     20.85     ~ 4 0
97 [BAL2007] gc357.2 GlC 03 38 38.110 -35 26 46.69       20.43   ~ 5 0
98 FDS J033841.92-352948.59 GlC 03 38 41.921 -35 29 48.60           ~ 3 0
99 [BAL2007] gc465.7 GlC 03 38 43.527 -35 33 07.70           ~ 3 0
100 FDS J033846.42-353723.17 GlC 03 38 46.416 -35 37 23.17       20.62   ~ 4 0
101 FDS J033849.01-353533.14 GlC 03 38 49.013 -35 35 33.15     20.994   20.03 ~ 5 0
102 [BAL2007] gc61.10 GlC 03 38 49.490 -35 29 39.20       20.70   ~ 3 0
103 [BAL2007] gc319.1 GlC 03 38 49.848 -35 23 35.88     20.96 20.31   ~ 8 0
104 [BAL2007] gc1404s GlC 03 38 51.5755 -35 36 10.512           ~ 3 0
105 NGC 1404 GiP 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 751 1
106 [BAL2007] gc1404n GlC 03 38 52.14 -35 35 15.9     21.31   20.16 ~ 4 0
107 [BAL2007] gc269.8 GlC 03 38 53.244 -35 36 51.71           ~ 2 0
108 [BAL2007] gc1404e GlC 03 38 54.5546 -35 35 30.161           ~ 3 0
109 [BAL2007] gc387.8 GlC 03 38 58.110 -35 35 24.89       20.82   ~ 3 0
110 FDS J033859.31-353343.52 GlC 03 38 59.312 -35 33 43.52       21.56   ~ 5 0
111 FDS J033903.86-352428.64 GlC 03 39 03.864 -35 24 28.64           ~ 3 0
112 [KGM99] aat 66 GlC 03 39 05.005 -35 26 53.47     20.96     ~ 7 0
113 [BAL2007] gc89.10 GlC 03 39 05.613 -35 28 59.31     21.61     ~ 3 0
114 [BAL2007] gc324.8 GlC 03 39 06.040 -35 34 49.52           ~ 2 0
115 [BAL2007] gc378.8 GlC 03 39 09.177 -35 34 57.94           ~ 2 0
116 LEDA 13449 GiC 03 39 13.42 -35 22 15.7   15.1 14.91     ~ 63 1
117 [BAL2007] gc376.8 GlC 03 39 15.834 -35 34 55.97           ~ 2 0
118 FCOS 1-60 GlC 03 39 17.6834039208 -35 25 30.066435228   21.15 20.19 19.57   ~ 25 0
119 [BAL2007] gc359.8 GlC 03 39 19.060 -35 34 06.79     20.96 20.41   ~ 6 0
120 [BAL2007] gc101.1 GlC 03 39 22.021 -35 28 44.79           ~ 2 0
121 LEDA 2793608 GiC 03 39 35.9209845336 -35 28 24.441828204   18.82 19.12     ~ 44 1
122 [BAL2007] gc152.5 GlC 03 39 39.420 -35 36 58.51           ~ 2 0
123 [BAL2007] gc417.5 GlC 03 39 39.759 -35 25 51.69           ~ 2 0
124 [BAL2007] gc317.5 GlC 03 39 39.846 -35 31 53.61           ~ 2 0
125 [BAL2007] gc516.5 GlC 03 39 40.293 -35 28 53.71           ~ 2 0
126 FDS J033943.10-353310.28 GlC 03 39 43.098 -35 33 10.28           ~ 3 0
127 [GDE2009] UCD 55 G 03 39 43.5213416928 -35 26 59.141596776           ~ 6 1
128 [BAL2007] gc391.5 GlC 03 39 44.276 -35 29 15.90           ~ 2 0
129 [FDE2007] J033949.16-353446.3 GlC 03 39 49.163 -35 34 46.17           ~ 3 1
130 LEDA 74850 LSB 03 39 50.1 -35 31 22   19.3       ~ 23 1
131 [BAL2007] newdw2 LSB 03 39 56.422 -35 37 20.51           ~ 8 1
132 [BAL2007] gc6.400 GlC 03 39 57.562 -35 24 33.00           ~ 2 0
133 [BAL2007] gc441.5 GlC 03 39 59.951 -35 26 31.57           ~ 2 0
134 [BAL2007] gc223.5 GlC 03 40 00.990 -35 34 35.59           ~ 2 0
135 [FDE2007] J034002.52-353648.8 GlC 03 40 02.534 -35 36 48.68           ~ 3 0
136 [FDE2007] J034002.79-353857.3 GlC 03 40 02.811 -35 38 57.16           ~ 3 1
137 FDS J034006.75-352927.20 GlC 03 40 06.752 -35 29 27.19           ~ 4 0
138 [BAL2007] gc13.40 GlC 03 40 08.114 -35 24 18.05           ~ 2 0
139 ESO 358-49 GiP 03 40 08.6854 -35 37 34.647   13.44   12.68 13.3 ~ 110 1
140 [BAL2007] gc173.5 GlC 03 40 09.731 -35 36 11.17           ~ 2 0
141 [BAL2007] gc172.4 GlC 03 40 11.404 -35 19 29.25           ~ 2 0
142 [BAL2007] gc467.5 GlC 03 40 11.597 -35 27 09.52           ~ 2 0
143 [BAL2007] gc115.4 GlC 03 40 12.554 -35 21 11.72           ~ 2 0
144 [BAL2007] gc459.5 GlC 03 40 12.978 -35 27 03.48           ~ 2 0
145 [BAL2007] gc6.300 GlC 03 40 21.409 -35 24 27.64           ~ 3 0
146 FDS J034022.89-353350.43 GlC 03 40 22.895 -35 33 50.43           ~ 4 0
147 [FDE2007] J034023.31-353832.1 GlC 03 40 23.320 -35 38 32.02           ~ 3 1
148 LEDA 13515 LSB 03 40 23.41 -35 16 32.8   16.20       ~ 38 2
149 [BAL2007] gc164.6 GlC 03 40 24.712 -35 35 13.69           ~ 2 0
150 [BAL2007] gc131.6 GlC 03 40 32.511 -35 36 23.04           ~ 3 0
151 [BAL2007] gc175.6 GlC 03 40 38.831 -35 34 43.12           ~ 2 0
152 [BAL2007] gc398.3 GlC 03 40 40.878 -35 12 30.49           ~ 2 0
153 [BAL2007] gc120.6 GlC 03 40 44.611 -35 36 46.74           ~ 2 0
154 [BAL2007] gc311.3 GlC 03 40 45.968 -35 14 51.64           ~ 2 0
155 [BAL2007] gc236.6 GlC 03 40 49.601 -35 32 46.80           ~ 2 0
156 [BAL2007] gc395.7 GlC 03 41 03.826 -35 26 34.05           ~ 2 0
157 [BAL2007] gc187.2 GlC 03 41 05.002 -35 17 45.30           ~ 2 0
158 [BAL2007] gc69.20 GlC 03 41 05.011 -35 22 08.55           ~ 2 0
159 [BAL2007] gc381.7 GlC 03 41 05.903 -35 26 38.00           ~ 2 0
160 LEDA 74905 LSB 03 41 07.3 -35 30 52   17.8       ~ 20 1
161 [BAL2007] gc163.7 GlC 03 41 10.461 -35 34 57.47           ~ 2 0
162 [BAL2007] gc388.2 GlC 03 41 11.311 -35 09 20.21           ~ 2 0
163 LEDA 13560 LSB 03 41 12.79 -35 09 29.8   17.0       ~ 24 1
164 [BAL2007] gc332.7 GlC 03 41 13.612 -35 29 28.90           ~ 2 0
165 [BAL2007] gc172.2b GlC 03 41 13.713 -35 18 17.44           ~ 2 0
166 [BAL2007] newdw1 G 03 41 18.114 -35 28 37.46           ~ 2 1
167 [BAL2007] gc428.7 GlC 03 41 20.356 -35 28 46.30           ~ 2 0
168 [BAL2007] gc350.2 GlC 03 41 20.539 -35 12 53.66           ~ 2 0
169 [BAL2007] gc77.20 GlC 03 41 21.179 -35 21 46.23           ~ 2 0
170 [BAL2007] gc129.2 GlC 03 41 29.535 -35 19 48.60           ~ 3 0
171 MRSS 358-61646 AG? 03 41 32.86 -35 11 37.3           ~ 4 1
172 2MASX J03414141-3510119 GiC 03 41 41.410 -35 10 11.99   15.70       ~ 37 1
173 [BAL2007] gc201.1 GlC 03 41 48.413 -35 17 40.25           ~ 2 0
174 [BAL2007] gc304.8 GlC 03 41 49.465 -35 30 12.68           ~ 2 0
175 [BAL2007] gc375.1 GlC 03 41 51.519 -35 11 24.91           ~ 2 0
176 LEDA 176559 AG? 03 41 59.44 -35 20 56.2           ~ 15 1
177 [BAL2007] gc152.1 GlC 03 42 00.125 -35 19 32.49           ~ 4 0
178 LEDA 74930 GiC 03 42 11.170 -35 26 35.31   19.2       ~ 13 1
179 [BAL2007] gc2.100 GlC 03 42 11.9121 -35 24 42.639           ~ 3 0
180 [BAL2007] gc73.10 GlC 03 42 13.6988 -35 22 40.815           ~ 3 0
181 [BAL2007] gc67.10 GlC 03 42 14.4966 -35 22 59.799           ~ 3 0
182 [BAL2007] gc32.10 GlC 03 42 16.2490 -35 24 05.871           ~ 3 0
183 [BAL2007] gc85.10 GlC 03 42 17.0284 -35 22 08.096           ~ 3 0
184 [BAL2007] gc74.10 GlC 03 42 18.7045 -35 22 39.960           ~ 3 0

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