2010ApJ...718.1128L


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.25CET07:57:28

2010ApJ...718.1128L - Astrophys. J., 718, 1128-1150 (2010/August-1)

Assessing the Milky Way satellites associated with the Sagittarius dwarf spheroidal galaxy.

LAW D.R. and MAJEWSKI S.R.

Abstract (from CDS):

Numerical models of the tidal disruption of the Sagittarius (Sgr) dwarf galaxy have recently been developed that for the first time simultaneously satisfy most observational constraints on the angular position, distance, and radial velocity trends of both leading and trailing tidal streams emanating from the dwarf. We use these dynamical models in combination with extant three-dimensional position and velocity data for Galactic globular clusters and dSph galaxies to identify those Milky Way satellites that are likely to have originally formed in the gravitational potential well of the Sgr dwarf, and have been stripped from Sgr during its extended interaction with the Milky Way. We conclude that the globular clusters Arp 2, M 54, NGC 5634, Terzan 8, and Whiting 1 are almost certainly associated with the Sgr dwarf, and that Berkeley 29, NGC 5053, Pal 12, and Terzan 7 are likely to be as well (albeit at lower confidence). The initial Sgr system therefore may have contained five to nine globular clusters, corresponding to a specific frequency SN= 5-9 for an initial Sgr luminosity MV= -15.0. Our result is consistent with the 8±2 genuine Sgr globular clusters expected on the basis of statistical modeling of the Galactic globular cluster distribution and the corresponding false-association rate due to chance alignments with the Sgr streams. The globular clusters identified as most likely to be associated with Sgr are consistent with previous reconstructions of the Sgr age-metallicity relation, and show no evidence for a second-parameter effect shaping their horizontal branch morphologies. We find no statistically significant evidence to suggest that any of the recently discovered population of ultrafaint dwarf galaxies are associated with the Sgr tidal streams, but are unable to rule out this possibility conclusively for all systems.

Abstract Copyright:

Journal keyword(s): galaxies: individual: Sagittarius - Galaxy: structure - globular clusters: general - Local Group

Simbad objects: 90

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Number of rows : 90

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9600 1
2 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 931 0
3 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 947 0
4 NAME Pisces I G 01 03 56.6 +21 53 41   16.18 14.3     ~ 360 0
5 NAME Whiting 1 GlC 02 02 56.8 -03 15 10           ~ 104 0
6 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 195 0
7 NAME Sgr Stream St* 02 22 +00.0           ~ 670 0
8 NAME Fornax H1 Cl* 02 37 02.1 -34 11 00     16.59     ~ 95 0
9 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 433 0
10 Cl Pal 1 GlC 03 33 20.04 +79 34 51.8   17.2       ~ 202 1
11 NAME E 1 GlC 03 55 02.5 -49 36 52           ~ 181 0
12 NAME CL ERID 1 GlC 04 24 44.5 -21 11 13           ~ 160 1
13 Cl Pal 2 GlC 04 46 05.91 +31 22 53.4   15       ~ 147 0
14 NGC 1851 GlC 05 14 06.76 -40 02 47.6   8.80 7.23     ~ 1252 0
15 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15050 1
16 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 722 0
17 NAME Gal Anticenter reg 05 46 +28.9           ~ 738 0
18 NGC 2298 GlC 06 48 59.41 -36 00 19.1   10.77 8.89     ~ 429 0
19 Cl Berkeley 29 OpC 06 53 04.2 +16 55 39   14.3       ~ 143 0
20 NAME Saurer A Cluster OpC 07 20.9 +01 48           ~ 56 0
21 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 823 0
22 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 317 0
23 NAME PYX GLOBULAR CL GlC 09 07 57.80 -37 13 17.0           ~ 83 0
24 NGC 2808 GlC 09 12 03.10 -64 51 48.6   7.77 5.69     ~ 1257 0
25 NAME Leo T dSph G 09 34 53.4 +17 03 05     15.1     ~ 311 0
26 NAME Leo Dwarf Irregular Galaxy G 09 59 26.46 +30 44 47.0 14.08 13.54 13.26 13.33   ~ 552 0
27 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 291 1
28 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 367 1
29 NAME Leo I dSph G 10 08 28.12 +12 18 23.4   11.3 10.0     ~ 1065 1
30 NGC 3201 GlC 10 17 36.82 -46 24 44.9   9.18 8.24     ~ 734 0
31 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 272 1
32 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 261 0
33 NAME Leo B G 11 13 28.13 +22 09 10.1   12.9 12.0     ~ 746 0
34 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 319 1
35 NAME Leo V G 11 31 09.60 +02 13 12.0     16.0     ~ 167 0
36 NAME Leo IV Dwarf Galaxy G 11 32 57.0 -00 32 00     15.1     ~ 325 1
37 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 499 0
38 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 394 1
39 C 1235-509 GlC 12 38 40.20 -51 09 01.0           ~ 324 0
40 M 68 GlC 12 39 27.98 -26 44 38.6   10.26 7.96     ~ 887 0
41 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 217 2
42 M 53 GlC 13 12 55.25 +18 10 05.4   8.95 7.79     ~ 722 0
43 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 543 0
44 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 264 1
45 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2278 0
46 NGC 5286 GlC 13 46 26.81 -51 22 27.3   9.18 8.31     ~ 368 0
47 C 1353-269 GlC 13 56 21.702 -27 10 03.00           ~ 104 0
48 NAME Bootes II G 13 58 00.0 +12 51 00     15.4     ~ 197 0
49 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 348 0
50 NGC 5466 GlC 14 05 27.29 +28 32 04.0   10.5 9.70     ~ 728 0
51 NGC 5634 GlC 14 29 37.28 -05 58 35.1   10.69 10.05     ~ 250 0
52 NGC 5694 GlC 14 39 36.52 -26 32 18.0   11.58 10.89     ~ 269 0
53 IC 4499 GlC 15 00 18.57 -82 12 49.6     8.56     ~ 312 0
54 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 344 0
55 NAME Serpens Dwarf GlC 15 16 05.30 -00 06 41.0   15.1       ~ 632 1
56 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1786 0
57 ESO 224-8 OpC 15 39 05.4 -50 03 02           ~ 53 0
58 ACO 2151 ClG 16 05 15.0 +17 44 55           ~ 558 3
59 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 330 0
60 NGC 6101 GlC 16 25 48.12 -72 12 07.9   10.90 10.08     ~ 241 0
61 ESO 390-6 GlC 16 28 40.10 -35 21 13.0     12.0     ~ 76 0
62 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2019 0
63 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 315 0
64 GCl 50 GlC 16 59 51.1 -00 32 00   15.70       ~ 165 1
65 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1919 0
66 NGC 6356 GlC 17 23 34.99 -17 48 46.9   10.01 7.42     ~ 321 1
67 IC 1257 Bz? 17 27 06.00 -07 05 00.0           ~ 61 0
68 NGC 6426 GlC 17 44 54.71 +03 10 12.5           ~ 189 0
69 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11820 0
70 ESO 280-6 GlC 18 09 06.000 -46 25 24.00           ~ 33 0
71 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1785 2
72 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 917 0
73 M 56 GlC 19 16 35.57 +30 11 00.5   8.90       ~ 364 0
74 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 366 0
75 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 303 0
76 NAME Sgr dIG G 19 29 59.0 -17 40 41   15.5 13.6     ~ 278 1
77 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 261 0
78 M 75 GlC 20 06 04.841 -21 55 20.14     8.26     ~ 316 0
79 NGC 6934 GlC 20 34 11.37 +07 24 16.1   10.48 9.75     ~ 363 0
80 M 72 GlC 20 53 27.70 -12 32 14.3   9.95 8.96     ~ 368 0
81 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 486 0
82 NAME Segue 3 Cl* 21 21 31.0 +19 07 02           ~ 51 0
83 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 2925 0
84 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 907 1
85 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 454 0
86 NAME Pisces II G 22 58 31.0 +05 57 09     16.3     ~ 217 0
87 GCl 124 GlC 23 06 44.48 +12 46 19.2   15.6       ~ 234 1
88 NGC 7492 GlC 23 08 26.68 -15 36 41.3     10.48     ~ 259 0
89 NAME Local Group GrG ~ ~           ~ 7108 0
90 NAME Orphan Stream St* ~ ~           ~ 197 0

    Equat.    Gal    SGal    Ecl

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2020.11.25-07:57:28

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