1999A&A...348..418H

Query : 1999A&A...348..418H

1999A&A...348..418H - Astronomy and Astrophysics, volume 348, 418-436 (1999/8-2)

Globular clusters in NGC 5128.

HOLLAND S., COTE P. and HESSER J.E.

Abstract (from CDS):

We used the Wide Field Planetary Camera 2 aboard the Hubble Space Telescope to search for globular clusters in the inner regions of the nearby giant elliptical galaxy NGC 5128. This galaxy is believed to be the product of a merger between a large elliptical galaxy and a small late-type spiral between 160 and 500Myr ago. We identified 21 globular cluster candidates and measured their core radii, tidal radii, half-mass radii, ellipticities, position angles, and V-I colors. We find evidence that the NGC 5128 globular cluster candidates are systematically more elliptical than are those of the Milky Way. Approximately half of the candidates have (V-I)0 colors that are consistent with their being either old, unreddened globular clusters, similar to those found in the Milky Way, or young, reddened globular clusters that may have formed during the recent merger event. Most of the rest have colors that are consistent with their being old globular clusters similar to those found in the Milky Way. We find one blue object with (V-I)0<0.26±0.09. The color, reddening, and integrated magnitude of this object are consistent with its being a small globular cluster with an age of ∼100Myr and a mass (based on its integrated luminosity) of ≤4000M☉. We find no evidence for bimodality in the colors of the globular cluster candidates in our sample beyond what can be explained by uncertainties in the differential reddening.

Abstract Copyright: ∼

Journal keyword(s): methods: data analysis - galaxies: individual: NGC 5128 - galaxies: peculiar - galaxies: star clusters

Nomenclature: Table 2: [HCH99] NN (Nos 1-21). Table 3: [HCH99] NNN (Nos 101-161).

CDS comments: In introduction, globular cluster C44 is [VHH81] 44.

Simbad objects: 88

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Number of rows : 88
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 3C 84 Sy2 03 19 48.1599902040 +41 30 42.108850836   13.10 12.48 11.09   ~ 4008 3
2 NGC 1399 BiC 03 38 29.083 -35 27 02.67 11.05 9.74 9.59 8.12   ~ 1570 1
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17434 0
4 NGC 2193 Cl* 06 06 17.31 -65 05 55.5   14.13 13.42     ~ 47 0
5 NGC 3597 EmG 11 14 41.9796496464 -23 43 39.573399828   13.62   12.46   ~ 130 0
6 [HCH99] 1 GlC 13 25 16.22 -42 59 43.4 18.69 18.36 17.47 16.94 16.40 ~ 7 0
7 [HCH99] 2 GlC 13 25 16.690 -43 02 08.70 19.27 18.87 17.93 17.37 16.76 ~ 22 0
8 [HCH99] 3 PoG 13 25 18.1 -43 01 59           ~ 1 0
9 [HCH99] 4 PoG 13 25 19.4 -43 01 13           ~ 1 0
10 [HCH99] 101 GlC 13 25 19.50 -43 02 28.4 20.00 19.60 18.92 18.47 17.93 ~ 7 0
11 [HCH99] 102 PoG 13 25 20.0 -43 01 56           ~ 1 0
12 [HCH99] 5 PoG 13 25 20.5 -43 00 52           ~ 1 0
13 [HCH99] 103 PoG 13 25 20.6 -43 01 11           ~ 1 0
14 [HCH99] 104 PoG 13 25 21.0 -42 59 25           ~ 1 0
15 [HCH99] 105 PoG 13 25 21.8 -43 01 26           ~ 1 0
16 [HCH99] 106 PoG 13 25 22.1 -43 00 39           ~ 1 0
17 [HCH99] 107 PoG 13 25 22.7 -43 00 39           ~ 1 0
18 [HCH99] 108 PoG 13 25 22.8 -43 00 40           ~ 1 0
19 [HCH99] 109 PoG 13 25 23.0 -43 01 18           ~ 1 0
20 [HCH99] 110 PoG 13 25 23.1 -43 00 50           ~ 1 0
21 [HCH99] 111 PoG 13 25 23.3 -43 01 48           ~ 1 0
22 [HCH99] 112 PoG 13 25 23.6 -43 01 34           ~ 1 0
23 JCMTSF J132523.9-430047 PoG 13 25 23.7 -43 00 47           ~ 2 0
24 [HCH99] 114 PoG 13 25 24.5 -43 01 05           ~ 1 0
25 [HCH99] 115 PoG 13 25 24.9 -43 00 20           ~ 1 0
26 [HCH99] 116 PoG 13 25 25.0 -42 59 40           ~ 1 0
27 [HCH99] 117 PoG 13 25 25.3 -43 02 01           ~ 1 0
28 [HCH99] 6 PoG 13 25 25.3 -43 02 01           ~ 3 0
29 [HCH99] 118 PoG 13 25 25.6 -43 00 58           ~ 1 0
30 [HCH99] 119 PoG 13 25 25.9 -43 00 57           ~ 1 0
31 [HCH99] 120 PoG 13 25 26.0 -43 02 16           ~ 1 0
32 [HCH99] 121 PoG 13 25 26.5 -42 59 55           ~ 1 0
33 [HCH99] 7 GlC 13 25 26.6 -42 59 27           ~ 3 0
34 [HCH99] 123 PoG 13 25 26.6 -43 02 11           ~ 1 0
35 [HCH99] 124 PoG 13 25 26.8 -43 00 12           ~ 1 0
36 [HCH99] 125 PoG 13 25 26.9 -43 00 14           ~ 1 0
37 [HCH99] 8 GlC 13 25 27.0 -43 00 02           ~ 4 0
38 [HCH99] 127 PoG 13 25 27.1 -43 01 54           ~ 1 0
39 [HCH99] 126 PoG 13 25 27.1 -43 00 06           ~ 1 0
40 [HCH99] 9 GlC 13 25 27.1 -42 59 40           ~ 3 0
41 [HCH99] 11 PoG 13 25 27.2 -43 01 54           ~ 2 0
42 [HCH99] 129 PoG 13 25 27.3 -43 01 54           ~ 1 0
43 [HCH99] 10 GlC 13 25 27.3 -42 59 28           ~ 3 0
44 [KKF2001] J132527.49-430128.43 GlC 13 25 27.49 -43 01 28.4   17.78 17.57     ~ 4 0
45 NAME Centaurus A Sy2 13 25 27.61521044 -43 01 08.8050291   8.18 6.84 6.66   ~ 4486 3
46 [HCH99] 131 PoG 13 25 27.7 -43 00 13           ~ 1 0
47 [HCH99] 12 GlC 13 25 27.8 -42 59 23           ~ 3 0
48 [HCH99] 132 PoG 13 25 27.8 -42 59 23           ~ 1 0
49 [HCH99] 133 PoG 13 25 28.3 -43 00 19           ~ 1 0
50 [HCH99] 134 PoG 13 25 28.3 -43 01 38           ~ 1 0
51 [HCH99] 135 PoG 13 25 28.5 -43 01 23           ~ 1 0
52 [HCH99] 13 GlC 13 25 28.69 -43 02 55.0 21.32 20.82 19.89 19.30 18.63 ~ 5 0
53 [HCH99] 136 PoG 13 25 29.0 -43 00 43           ~ 1 0
54 [HCH99] 139 PoG 13 25 29.2 -43 01 28           ~ 1 0
55 [HCH99] 140 PoG 13 25 29.2 -43 02 29           ~ 1 0
56 [HCH99] 141 PoG 13 25 29.2 -43 00 38           ~ 1 0
57 [HCH99] 138 PoG 13 25 29.2 -43 00 22           ~ 1 0
58 [HCH99] 14 GlC 13 25 29.2 -43 00 16           ~ 3 0
59 [HCH99] 137 PoG 13 25 29.2 -43 00 16           ~ 1 0
60 [HCH99] 142 PoG 13 25 29.7 -43 01 14           ~ 1 0
61 [HCH99] 15 GlC 13 25 29.9072539214 -43 00 05.104613492 19.27 18.87 17.93 17.37 16.76 ~ 20 0
62 [HCH99] 144 PoG 13 25 30.0 -43 02 12           ~ 1 0
63 [HCH99] 145 PoG 13 25 30.1 -43 02 09           ~ 1 0
64 [KKF2001] J132530.29-425934.64 GlC 13 25 30.2770146048 -42 59 34.770372108   19.71 20.0 18.45   ~ 26 0
65 [HCH99] 146 PoG 13 25 30.3 -43 01 12           ~ 1 0
66 [HCH99] 147 PoG 13 25 30.6 -43 00 24           ~ 1 0
67 [HCH99] 148 PoG 13 25 31.1 -43 01 19           ~ 1 0
68 [HCH99] 17 PoG 13 25 31.1 -42 59 39           ~ 1 0
69 [HCH99] 149 PoG 13 25 31.2 -43 01 19           ~ 1 0
70 [HCH99] 150 PoG 13 25 31.3 -43 00 37           ~ 1 0
71 [HCH99] 18 GlC 13 25 31.60 -43 00 02.8 21.06 20.99 19.93 19.20 18.43 ~ 31 0
72 [HCH99] 19 PoG 13 25 31.7 -43 00 35           ~ 2 0
73 [VHH81] 44 GlC 13 25 31.7317181472 -43 19 22.746120024 19.76 19.50 18.69 18.14 17.66 ~ 29 0
74 [HCH99] 152 PoG 13 25 31.8 -43 01 56           ~ 1 0
75 [HCH99] 153 PoG 13 25 32.6 -43 01 27           ~ 1 0
76 [HCH99] 154 GlC 13 25 33.0 -72 59 05           ~ 3 0
77 [HCH99] 155 PoG 13 25 33.1 -42 59 05           ~ 1 0
78 [HCH99] 156 PoG 13 25 33.2 -43 01 37           ~ 1 0
79 [HCH99] 157 PoG 13 25 33.6 -43 01 20           ~ 1 0
80 [HCH99] 20 PoG 13 25 33.7 -43 01 20           ~ 1 0
81 [HCH99] 158 PoG 13 25 34.6 -43 02 37           ~ 1 0
82 [VHH81] 153 GlC 13 25 34.650 -43 03 27.70     20.0 18.41   ~ 24 0
83 JCMTSF J132535.9-425949 PoG 13 25 35.9 -42 59 50           ~ 2 0
84 [HCH99] 160 PoG 13 25 37.0 -43 01 29           ~ 1 0
85 [HCH99] 161 PoG 13 25 37.8 -43 01 18           ~ 1 0
86 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 369 1
87 NGC 7252 EmG 22 20 44.7748209648 -24 40 41.909518200 12.26 12.46 12.06 11.57   ~ 703 1
88 NAME Local Group GrG ~ ~           ~ 8391 0

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