2010MNRAS.404.1203F


Query : 2010MNRAS.404.1203F

2010MNRAS.404.1203F - Mon. Not. R. Astron. Soc., 404, 1203-1214 (2010/May-3)

Accreted versus in situ Milky way globular clusters.

FORBES D.A. and BRIDGES T.

Abstract (from CDS):

A large, perhaps dominant fraction, of the Milky Way's halo is thought to be built up by the accretion of smaller galaxies and their globular cluster (GC) systems. Here, we examine the Milky Way's GC system to estimate the fraction of accreted versus in situ formed GCs. We first assemble a high-quality data base of ages and metallicities for 93 Milky Way GCs from literature deep colour-magnitude data. The age-metallicity relation for Milky Way's GCs reveals two distinct tracks - one with near constant old age of ∼12.8 Gyr and the other branches to younger ages. We find that the latter young track is dominated by GCs associated with the Sagittarius and Canis Major dwarf galaxies. Despite being overly simplistic, its age-metallicity relation can be well represented by a simple closed box model with continuous star formation. The inferred chemical enrichment history is similar to that of the Large Magellanic Cloud, but is more enriched, at a given age, compared to the Small Magellanic Cloud.

After excluding Sagittarius and Canis Major GCs, several young track GCs remain. Their horizontal branch morphologies are often red and hence classified as young halo objects; however, they do not tend to reveal extended horizontal branches (a possible signature of an accreted remnant nucleus). Retrograde orbit GCs (a key signature of accretion) are commonly found in the young track. We also examine GCs that lie close to the Fornax-Leo-Sculptor great circle defined by several satellite galaxies. We find that several GCs are consistent with the young track and we speculate that they may have been accreted along with their host dwarf galaxy, whose nucleus may survive as a GC. Finally, we suggest that 27-47 GCs (about 1/4 of the entire system), from six to eight dwarf galaxies, were accreted to build the Milky Way GC system we see today.


Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): Galaxy: evolution - Galaxy: formation - globular clusters: general - Galaxy: halo

Simbad objects: 119

goto Full paper

goto View the references in ADS

Number of rows : 119
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3730 0
2 NGC 121 GlC 00 26 49.0 -71 32 10   11.2 11.24     ~ 292 0
3 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11842 1
4 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10264 1
5 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 987 0
6 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1236 4
7 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1014 0
8 NAME Whiting 1 GlC 02 02 56.8 -03 15 10           ~ 131 0
9 NAME Fornax Dwarf Spheroidal G 02 39 59.3 -34 26 57   9.02 7.4     ~ 1617 1
10 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6325 1
11 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 472 0
12 Cl Pal 1 GlC 03 33 20.04 +79 34 51.8   17.2       ~ 221 1
13 NAME E 1 GlC 03 55 02.5 -49 36 52           ~ 190 0
14 NAME CL ERID 1 GlC 04 24 44.5 -21 11 13           ~ 167 1
15 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1331 0
16 NGC 1902 Cl* 05 18 18.590 -66 37 38.85   12.04 11.77     ~ 17 0
17 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16074 1
18 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 763 0
19 NGC 2298 GlC 06 48 59.41 -36 00 19.1   10.77 8.89     ~ 460 0
20 Cl Berkeley 29 OpC 06 53 04.2 +16 55 39   14.3       ~ 155 0
21 Cl Haffner 2 OpC 07 03 06 -20 49.2           ~ 117 0
22 NAME CMa Dwarf Galaxy G 07 12.6 -27 40     -0.1     ~ 197 1
23 NAME Saurer A Cluster OpC 07 20.9 +01 48           ~ 60 0
24 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 878 0
25 ESO 368-7 OpC 07 38 44 -33 50.7           ~ 48 0
26 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1333 0
27 NAME E 3 GlC 09 20 57.07 -77 16 54.8           ~ 149 0
28 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 307 1
29 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 401 1
30 NAME Harrington-Wilson No1 G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1128 1
31 NAME Dwarf Elliptical Galaxy in Sex G 10 13 02.9 -01 36 53   12 10.4     ~ 775 0
32 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 798 0
33 NAME Leo B G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 792 0
34 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 332 1
35 Koposov 1 GlC 11 59 18.40 +12 15 35.8           ~ 61 0
36 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 537 0
37 NGC 4372 GlC 12 25 45.43 -72 39 32.7   10.86 9.85     ~ 284 0
38 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 414 1
39 C 1235-509 GlC 12 38 40.20 -51 09 01.0           ~ 345 0
40 M 68 GlC 12 39 27.98 -26 44 38.6   10.26 7.96     ~ 937 0
41 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 232 2
42 NGC 4833 GlC 12 59 33.92 -70 52 35.4   8.72 7.79     ~ 383 0
43 M 53 GlC 13 12 55.25 +18 10 05.4   8.95 7.79     ~ 773 0
44 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 577 0
45 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 3240 0
46 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2375 0
47 NGC 5286 GlC 13 46 26.81 -51 22 27.3   9.18 8.31     ~ 402 0
48 C 1353-269 GlC 13 56 21.702 -27 10 03.00           ~ 116 0
49 NGC 5466 GlC 14 05 27.29 +28 32 04.0   10.5 9.70     ~ 778 0
50 NGC 5634 GlC 14 29 37.28 -05 58 35.1   10.69 10.05     ~ 278 0
51 NGC 5694 GlC 14 39 36.52 -26 32 18.0   11.58 10.89     ~ 284 0
52 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 379 0
53 NAME Serpens Dwarf GlC 15 16 05.30 -00 06 41.0   15.1       ~ 684 1
54 NGC 5897 GlC 15 17 24.40 -21 00 36.4   10.16 8.52     ~ 361 0
55 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1875 0
56 NGC 5927 GlC 15 28 00.69 -50 40 22.9   10.13 8.86     ~ 431 0
57 NGC 5946 GlC 15 35 28.58 -50 39 35.0   11.98 10.72     ~ 177 0
58 NGC 5986 GlC 15 46 03.00 -37 47 11.1     6.92     ~ 337 0
59 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 345 0
60 Cl Lynga 7 GlC 16 11 03.65 -55 19 04.0           ~ 101 0
61 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 669 0
62 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1760 0
63 NGC 6101 GlC 16 25 48.12 -72 12 07.9   10.90 10.08     ~ 266 0
64 NGC 6144 GlC 16 27 13.86 -26 01 24.6   10.55 9.63     ~ 224 0
65 M 107 GlC 16 32 31.86 -13 03 13.6   9.96 8.85     ~ 745 0
66 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2104 0
67 M 12 GlC 16 47 14.18 -01 56 54.7   8.52 6.07     ~ 625 0
68 NGC 6235 GlC 16 53 25.36 -22 10 38.8   11.99 7.20     ~ 171 0
69 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 744 0
70 GCl 50 GlC 16 59 51.1 -00 32 00   15.70       ~ 179 1
71 M 62 GlC 17 01 12.60 -30 06 44.5   8.55 7.39     ~ 561 0
72 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 342 1
73 NGC 6284 GlC 17 04 28.747 -24 45 51.22   10.72 7.43     ~ 256 0
74 NGC 6287 GlC 17 05 09.4906767360 -22 42 28.099250172   11.49 10.30     ~ 209 0
75 NGC 6304 GlC 17 14 32.25 -29 27 43.3   10.33 9.03     ~ 326 0
76 NGC 6316 GlC 17 16 37.42 -28 08 24.0   10.33 9.03     ~ 192 0
77 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1998 0
78 NGC 6342 GlC 17 21 10.14 -19 35 14.7   11.25 10.01     ~ 264 0
79 NGC 6352 GlC 17 25 29.11 -48 25 19.8   9.95 8.87     ~ 368 0
80 IC 1257 Bz? 17 27 06.00 -07 05 00.0           ~ 69 0
81 NGC 6366 GlC 17 27 44.24 -05 04 47.5           ~ 284 0
82 NGC 6362 GlC 17 31 54.99 -67 02 54.0   9.72 8.86     ~ 533 0
83 NGC 6388 GlC 17 36 17.461 -44 44 08.34   7.40       ~ 863 1
84 NGC 6397 GlC 17 40 42.09 -53 40 27.6   7.39 5.17     ~ 1879 1
85 NGC 6426 GlC 17 44 54.71 +03 10 12.5           ~ 202 0
86 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13004 0
87 NGC 6441 GlC 17 50 13.06 -37 03 05.2   9.26 8.00     ~ 829 0
88 NGC 6496 GlC 17 59 03.68 -44 15 57.4   9.96       ~ 206 0
89 NGC 6535 GlC 18 03 50.51 -00 17 51.5   11.35 9.85     ~ 268 0
90 NGC 6544 GlC 18 07 20.58 -24 59 50.4   11.36 9.90     ~ 265 0
91 NGC 6541 GlC 18 08 02.36 -43 42 53.6   8.06 7.32     ~ 348 1
92 NGC 6584 GlC 18 18 37.60 -52 12 56.8   10.32 8.17     ~ 265 0
93 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 824 1
94 M 69 GlC 18 31 23.10 -32 20 53.1   9.32 8.31     ~ 436 1
95 NGC 6652 GlC 18 35 45.63 -32 59 26.6   10.64 9.75     ~ 391 0
96 M 22 GlC 18 36 23.94 -23 54 17.1   7.16 6.17     ~ 1297 0
97 M 70 GlC 18 43 12.76 -32 17 31.6   9.76 9.06     ~ 355 0
98 NGC 6712 GlC 18 53 04.32 -08 42 21.5   9.85 8.69     ~ 492 0
99 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1959 2
100 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 999 0
101 NGC 6717 GlC 18 55 06.04 -22 42 05.3   11.29 10.35     ~ 220 0
102 NGC 6723 GlC 18 59 33.15 -36 37 56.1           ~ 468 0
103 NGC 6752 GlC 19 10 52.11 -59 59 04.4   6.96 6.28     ~ 1897 0
104 M 56 GlC 19 16 35.57 +30 11 00.5   8.90       ~ 392 0
105 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 399 0
106 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 331 0
107 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 809 0
108 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 292 0
109 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 1074 0
110 M 75 GlC 20 06 04.841 -21 55 20.14     8.26     ~ 339 0
111 NGC 6934 GlC 20 34 11.37 +07 24 16.1   10.48 9.75     ~ 389 0
112 M 72 GlC 20 53 27.70 -12 32 14.3   9.95 8.96     ~ 393 0
113 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 3026 0
114 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 965 1
115 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 981 0
116 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 490 0
117 GCl 124 GlC 23 06 44.48 +12 46 19.2   15.6       ~ 252 1
118 NGC 7492 GlC 23 08 26.68 -15 36 41.3     10.48     ~ 279 0
119 NAME Local Group GrG ~ ~           ~ 7680 0

To bookmark this query, right click on this link: simbad:objects in 2010MNRAS.404.1203F and select 'bookmark this link' or equivalent in the popup menu


2022.07.06-09:11:25

© Université de Strasbourg/CNRS

    • Contact