2002A&A...383..823M

Query : 2002A&A...383..823M

2002A&A...383..823M - Astronomy and Astrophysics, volume 383, 823-837 (2002/3-1)

Ultra compact objects in the Fornax cluster of galaxies: Globular clusters or dwarf galaxies?

MIESKE S., HILKER M. and INFANTE L.

Abstract (from CDS):

The relation between the Ultra Compact Objects (hereafter UCOs) recently discovered in the Fornax cluster (Drinkwater et al., 2000PASA...17..227D; Hilker et al., 1999A&AS..134...75H) and the brightest globular clusters associated with the central galaxy NGC 1399 has been investigated. The question was adressed whether the UCOs constitute a distinct population of objects not linked to globular clusters or whether there is a smooth transition between both populations. Therefore, a spectroscopic survey on compact objects in the central region of the Fornax cluster was carried out with the 2.5m du Pont telescope (LCO). UCOs and the bright NGC 1399 globular clusters with similar brightness were inspected. 12 GCs from the bright end of the globular cluster luminosity function have been identified as Fornax members. Eight are new members, four were known as members from before. Their magnitude distribution supports a smooth transition between the faint UCOs and the bright globular clusters. There is no evidence for a magnitude gap between both populations. However, the brightest UCO clearly stands out; it is too bright and too large to be accounted for by globular clusters. For the only UCO included in our survey, a relatively high metallicity of [(Fe)/(H)]≃-0.5dex is measured.

Abstract Copyright: ∼

Journal keyword(s): galaxies: clusters: individual: Fornax cluster - galaxies: dwarf - galaxies: fundamental parameters - galaxies: luminosity function

VizieR on-line data: <Available at CDS (J/A+A/383/823): fcos.dat>

Nomenclature: Tables 2, A1, A2: FCOS F-NNNN N=120+185.

Simbad objects: 131

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Number of rows : 131
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 M 32 GiG 00 42 41.82480 +40 51 54.6120 9.51 9.03 8.08     ~ 2154 2
2 FCOS 6-52 * 03 34 55.50 -35 03 59.6     20.70     ~ 1 0
3 LEDA 74743 GiC 03 34 57.183 -35 12 23.97   19.7 18.97     ~ 13 0
4 FCOS 6-42 * 03 34 57.65 -35 03 23.0     20.35     ~ 1 0
5 FCOS 6-32 EmO 03 34 59.92 -35 11 41.6     19.71     ~ 1 0
6 FCOS 6-57 QSO 03 35 00.09 -35 09 25.3     20.95     ~ 1 0
7 FCOS 6-50 * 03 35 01.50 -35 07 54.0     20.66     ~ 1 0
8 FCOS 6-43 WD? 03 35 03.0086315112 -35 17 32.025159996     20.36     ~ 3 0
9 FCOS 6-5 ? 03 35 03.08 -35 20 53.4     19.57     ~ 1 0
10 FCOS 6-6 ? 03 35 03.29 -35 00 33.8     19.69     ~ 1 0
11 FCOS 6-47 * 03 35 03.87 -35 14 01.7     20.59     ~ 1 0
12 FCOS 6-41 * 03 35 05.55 -35 10 10.6     20.31     ~ 1 0
13 LEDA 2793553 GiC 03 35 06.5 -35 10 54     19.24     ~ 4 0
14 FCOS 6-29 * 03 35 07.03 -35 06 16.8     19.46     ~ 1 0
15 FCOS 6-48 * 03 35 07.30 -34 58 13.1     20.61     ~ 1 0
16 FCOS 6-38 * 03 35 09.32 -35 18 47.1     20.27     ~ 1 0
17 FCOS 6-30 * 03 35 13.04 -35 04 46.3     19.49     ~ 1 0
18 FCOS 6-34 * 03 35 13.99 -35 05 02.6     19.80     ~ 1 0
19 FCOS 6-27 * 03 35 17.25 -35 20 20.8     19.06     ~ 1 0
20 FCOS 6-51 * 03 35 18.31 -34 58 21.7     20.70     ~ 1 0
21 FCOS 6-37 * 03 35 19.47 -34 59 37.2     20.17     ~ 1 0
22 FCOS 6-39 * 03 35 22.54 -35 07 03.6     20.27     ~ 1 0
23 FCOS 6-33 * 03 35 22.66 -35 06 34.3     19.76     ~ 1 0
24 FCOS 6-56 * 03 35 24.22 -35 16 50.8     20.88     ~ 1 0
25 2MASS J03352503-3521449 * 03 35 25.04 -35 21 45.0     16.45     ~ 1 0
26 2MASS J03352669-3516361 * 03 35 26.6985905184 -35 16 36.394594680     19.20     ~ 1 0
27 FCOS 6-45 EmO 03 35 26.93 -34 59 51.0     20.52     ~ 1 0
28 FCOS 6-31 ? 03 35 31.62 -35 02 49.9     19.66     ~ 1 0
29 FCOS 6-36 * 03 35 32.04 -35 16 01.0     19.96     ~ 1 0
30 [BAL2007] uc257.5 GiC 03 37 03.2455003608 -35 38 04.385867820   19.85 19.31     ~ 34 1
31 FCOS 4-40 ? 03 37 39.46 -35 01 34.8     20.45     ~ 1 0
32 FCOS 2-78 GlC 03 37 41.8055243088 -35 41 22.842102804     20.69     ~ 6 0
33 FCOS 2-50 * 03 37 42.65 -35 25 41.4     19.34     ~ 1 0
34 FCOS 2-55 EmO 03 37 42.69 -35 32 29.2     19.58     ~ 1 0
35 FCOS 2-80 * 03 37 42.98 -35 42 14.5     20.70     ~ 1 0
36 FCOS 4-7 ? 03 37 43.02 -35 13 56.1     20.27     ~ 1 0
37 FCOS 2-105 * 03 37 43.04 -35 38 28.6     19.19     ~ 1 0
38 FCOS 4-49 GlC 03 37 43.06 -35 22 11.9     20.85     ~ 5 0
39 FCOS 4-23 QSO 03 37 43.2152756592 -35 11 02.883983064     19.87     ~ 1 0
40 FCOS 2-59 * 03 37 43.3843736352 -35 25 57.890858160     19.71     ~ 1 0
41 FCOS 4-21 * 03 37 44.01 -35 15 09.3     19.81     ~ 1 0
42 FCOS 2-52 ? 03 37 44.46 -35 36 18.0     19.43     ~ 1 0
43 FCOS 2-84 EmO 03 37 44.59 -35 34 50.9     20.79     ~ 1 0
44 FCOS 4-1 EmO 03 37 44.62 -35 18 32.6     19.63     ~ 1 0
45 FCOS 4-6 EmO 03 37 45.37 -35 00 22.2     20.12     ~ 1 0
46 FCOS 4-16 EmO 03 37 45.63 -35 03 35.4     21.04     ~ 1 0
47 FCOS 2-51 * 03 37 45.96 -35 27 23.4     19.42     ~ 1 0
48 FCOS 4-37 * 03 37 46.43 -35 13 01.4     20.40     ~ 1 0
49 FCOS 2-1 EmO 03 37 46.47 -35 24 11.4     19.17     ~ 1 0
50 FCOS 2-95 GlC 03 37 46.55 -35 28 04.8     20.96     ~ 4 0
51 FCOS 2-65 ? 03 37 46.65 -35 27 50.0     20.02     ~ 1 0
52 [BAL2007] gc381.6 GlC 03 37 46.710 -35 34 42.60     20.81 20.39   ~ 6 0
53 [SRH2010] GS04-M03 144 * 03 37 47.360 -35 17 19.31     20.30 19.58   ~ 2 0
54 FCOS 2-71 EmO 03 37 48.12 -35 33 57.8     20.24     ~ 1 0
55 FCOS 2-31 EmO 03 37 48.21 -35 29 12.1     20.50     ~ 1 0
56 2XMM J033748.5-350424 QSO 03 37 48.5622096600 -35 04 23.513355372     19.97     ~ 2 0
57 FCOS 2-54 * 03 37 49.39 -35 44 07.5     19.55     ~ 2 0
58 FCOS 4-43 * 03 37 49.66 -35 19 43.0     20.70     ~ 1 0
59 FCOS 2-85 ? 03 37 50.94 -35 39 47.2     20.80     ~ 1 0
60 FCOS 4-36 * 03 37 51.18 -35 12 42.3     20.37     ~ 1 0
61 FCOS 4-26 * 03 37 51.66 -35 05 19.3     20.02     ~ 1 0
62 FCOS 2-57 * 03 37 52.02 -35 33 07.7     19.65     ~ 1 0
63 FCOS 4-44 ? 03 37 52.48 -35 13 13.6     20.72     ~ 1 0
64 FCOS 4-29 * 03 37 52.49 -35 07 34.3     20.06     ~ 1 0
65 FCOS 4-31 * 03 37 53.43 -35 22 00.7     20.27     ~ 1 0
66 [SRH2010] GS04-M04 93 * 03 37 54.540 -35 18 26.81     20.02 19.35   ~ 2 0
67 FCOS 4-20 * 03 37 55.11 -35 16 57.7     19.27     ~ 1 0
68 FCOS 4-24 ? 03 37 55.60 -35 09 36.1     19.93     ~ 1 0
69 FCOS 4-8 ? 03 37 55.70 -35 06 53.0     20.31     ~ 1 0
70 FCOS 2-8 ? 03 37 59.86 -35 39 04.4     19.68     ~ 1 0
71 FCOS 4-56 * 03 38 00.85 -35 00 10.1     16.48     ~ 1 0
72 FCOS 4-22 * 03 38 01.58 -35 02 23.3     19.82     ~ 1 0
73 FCOS 4-10 ? 03 38 02.74 -35 01 19.2     20.45     ~ 1 0
74 FCOS 4-32 EmO 03 38 02.79 -35 08 55.4     20.30     ~ 1 0
75 FCOS 2-66 EmO 03 38 03.76 -35 36 07.9     20.07     ~ 1 0
76 FCOS 2-70 * 03 38 05.190 -35 35 32.60     20.21 19.46   ~ 2 0
77 NAME UCD-FORS 81 GlC 03 38 06.3040671264 -35 28 58.550357136   18.85 19.31 18.80 18.18 ~ 39 1
78 [DRG2004] 90:14 * 03 38 08.05 -35 33 28.9     19.66     ~ 2 0
79 FCOS 4-41 * 03 38 08.40 -35 20 46.2     20.54     ~ 1 0
80 FCOS 4-28 * 03 38 09.46 -35 08 35.5     20.06     ~ 1 0
81 FCOS 4-35 * 03 38 10.01 -35 04 33.5     20.35     ~ 1 0
82 FCOS 2-73 GlC 03 38 11.9732010696 -35 39 57.099681000     20.40 19.81   ~ 9 0
83 2XMM J033812.6-351619 QSO 03 38 12.6051973968 -35 16 20.666449668   20.66 20.13 19.68   ~ 2 0
84 FCOS 2-79 * 03 38 12.93 -35 41 44.2     20.69     ~ 1 0
85 FCOS 2-89 GlC 03 38 14.02 -35 29 43.0     20.87     ~ 4 0
86 FCOS 2-60 * 03 38 15.50 -35 43 28.2     19.75     ~ 1 0
87 LEDA 648051 GiC 03 38 16.67 -35 30 27.9   17.4 16.84     ~ 18 0
88 LEDA 74806 LSB 03 38 18.80 -35 31 49.4   17.3 17.18     ~ 36 1
89 LEDA 74808 EmG 03 38 19.265 -35 07 44.74   15.60 15.34     ~ 59 0
90 LEDA 74811 EmG 03 38 21.4890668040 -35 15 34.953195492   15.89 15.65     ~ 37 0
91 FCOS 4-3 ? 03 38 21.76 -35 09 22.5     19.77     ~ 1 0
92 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1569 1
93 ACO S 373 ClG 03 38 29.4 -35 27 08           ~ 1823 0
94 FCOS 1-11 EmO 03 38 31.12 -35 39 13.4     18.08     ~ 1 0
95 FCOS 1-35 * 03 38 38.420 -35 34 51.50     19.65 19.19   ~ 2 0
96 FCOS 1-58 GlC 03 38 39.342 -35 27 05.91     20.78     ~ 9 0
97 FCOS 1-28 * 03 38 40.67 -35 36 52.3     19.86     ~ 1 0
98 [MHJ2008] F-18 G 03 38 41.9519250336 -35 33 12.952421316     19.70     ~ 14 1
99 CGF 1-27 GiC 03 38 42.52 -35 30 49.2     20.10     ~ 2 0
100 FCOS 1-23 * 03 38 42.69 -35 43 37.7     20.37     ~ 1 0
101 FCOS 1-33 * 03 38 43.630 -35 35 05.20     19.76 19.25   ~ 3 0
102 FCOS 1-61 * 03 38 45.81 -35 25 12.6     20.89     ~ 1 0
103 FCOS 1-47 * 03 38 45.91 -35 32 40.6     20.31     ~ 1 0
104 FCOS 1-24 * 03 38 46.110 -35 42 10.70     19.75 19.28   ~ 2 0
105 FCOS 1-73 * 03 38 48.850 -35 40 17.01     19.09 18.35   ~ 2 0
106 LEDA 2801085 GiC 03 38 49.1 -35 24 10     19.79     ~ 3 0
107 LEDA 2801087 GiC 03 38 49.2 -35 29 20     19.63     ~ 4 0
108 [DRG2004] 84:67 * 03 38 49.420 -35 30 01.50     20.84 20.49   ~ 3 0
109 [BAL2007] gc319.1 GlC 03 38 49.848 -35 23 35.88     20.96 20.31   ~ 8 0
110 FCOS 1-57 * 03 38 51.15 -35 27 41.2     20.95     ~ 1 0
111 NGC 1404 GiP 03 38 51.917 -35 35 39.81 11.53 10.69 10.00 9.03   ~ 750 1
112 CGF 1-4 GlC 03 38 54.0545340024 -35 33 33.320376180   18.5 18.06     ~ 75 1
113 FCOS 1-19 GlC 03 38 54.59 -35 29 45.8     20.62     ~ 2 0
114 NAME UCD-FORS 1 GlC 03 38 56.1843430272 -35 24 48.907687176     20.31   19.29 ~ 9 0
115 CGF 1-56 GiC 03 38 57.00 -35 31 11.1     21.02     ~ 2 0
116 FCOS 1-25 * 03 38 59.26 -35 41 14.4     20.69     ~ 1 0
117 FCOS 1-43 * 03 39 02.39 -35 33 53.4     20.31     ~ 1 0
118 FCOS 1-13 EmO 03 39 02.64 -35 41 49.5     20.68     ~ 1 0
119 FCOS 1-29 EmO 03 39 03.63 -35 36 14.6     19.74     ~ 1 0
120 FCOS 1-41 * 03 39 06.29 -35 34 11.4     19.76     ~ 1 0
121 FCOS 1-30 * 03 39 07.31 -35 36 02.2     20.24     ~ 1 0
122 FCOS 1-75 EmO 03 39 08.18 -35 38 41.3     18.68     ~ 1 0
123 FCOS 1-53 * 03 39 10.81 -35 29 09.7     20.48     ~ 1 0
124 FCOS 1-66 * 03 39 12.55 -35 21 22.7     19.63     ~ 1 0
125 LEDA 13449 GiC 03 39 13.42 -35 22 15.7   15.1 14.91     ~ 63 1
126 FCOS 1-60 GlC 03 39 17.6834039208 -35 25 30.066435228   21.15 20.19 19.57   ~ 25 0
127 LEDA 2793608 GiC 03 39 35.9209845336 -35 28 24.441828204   18.82 19.12     ~ 44 1
128 FCSS J033952.5-350424 GiC 03 39 52.5471040440 -35 04 24.003755616   19.66 19.50     ~ 37 0
129 HD 22879 Pe* 03 40 22.0652879951 -03 13 01.124265616 7.146 7.222 6.667 6.346 6.016 G0VmF2 496 0
130 * 20 Mon PM* 07 10 13.6815026472 -04 14 13.585055244 6.73 5.95 4.92 4.13 3.61 K0III 148 0
131 2MASX J12365934+1419494 LSB 12 36 59.3463193464 +14 19 49.164305988   17.80       ~ 202 0

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