2010ApJ...721.1790C


Query : 2010ApJ...721.1790C

2010ApJ...721.1790C - Astrophys. J., 721, 1790-1819 (2010/October-1)

Morphological distortion of galactic globular clusters.

CHEN C.W. and CHEN W.P.

Abstract (from CDS):

The shapes and sizes of 116 Galactic globular clusters (GCs) are presented, based on the analysis of the spatial distribution of 2MASS point sources. In general, Galactic GCs are slightly flattened in shape, with a median axial ratio of 0.87. The GCs close to the Galactic bulge have various degrees of flattening, and those exhibiting obvious flattening tend to have their elongation pointing toward the Galactic center, manifesting the tidal effect from the bulge. In comparison, GCs away from the Galactic center tend to be spherical. A few GCs in the halo are also found to have elongated shape. Three notable cases of highly flattened clusters were previously known to be associated with stellar streams or particular dynamical history: NGC 5897 is known to have a stellar tidal tail extending to its equatorial north and south; NGC 6838 had a recent encounter with the Galactic plane; and IC 4499 is spatially close to, and collimated with, the "Magellanic Stream." We also found 31 GCs associated with possible clumpy structures in stellar distributions, as diagnosed by possible cluster members selected by colors and magnitudes. Four such cases of stellar debris are presented: NGC 6366 is experiencing heavy tidal stripping and NGC 2808 has been known to have multiple main-sequence branches. NGC 3201 and NGC 6397, like the flattened cluster, NGC 6838, also have their recent passage through the Galactic plane. Our sample is derived from the most inclusive analysis of the morphology of Galactic GCs, and should provide a valuable database to probe the mass distribution, or merging history of the Milky Way galaxy.

Abstract Copyright:

Journal keyword(s): Galaxy: kinematics and dynamics - globular clusters: general - stars: kinematics and dynamics

Simbad objects: 125

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Number of rows : 125
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     ~ 3736 0
2 NAME Magellanic Stream HVC 00 32 -30.0           ~ 893 1
3 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 11880 1
4 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 988 0
5 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1016 0
6 HD 15285 SB* 02 27 45.86150 +04 25 55.7489 11.398 10.101 8.673 7.797 6.972 M2V 132 0
7 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 6371 1
8 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 473 0
9 Cl Pal 2 GlC 04 46 05.91 +31 22 53.4   15       ~ 161 0
10 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1335 0
11 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16153 1
12 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 766 0
13 NGC 2298 GlC 06 48 59.41 -36 00 19.1   10.77 8.89     ~ 462 0
14 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 881 0
15 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1340 0
16 NAME E 3 GlC 09 20 57.07 -77 16 54.8           ~ 150 0
17 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 801 0
18 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 539 0
19 NGC 4372 GlC 12 25 45.43 -72 39 32.7   10.86 9.85     ~ 284 0
20 NGC 4499 GiG 12 32 04.9511271168 -39 58 57.352022256   13.58   12.20   ~ 34 0
21 C 1235-509 GlC 12 38 40.20 -51 09 01.0           ~ 346 0
22 M 68 GlC 12 39 27.98 -26 44 38.6   10.26 7.96     ~ 939 0
23 NGC 4833 GlC 12 59 33.92 -70 52 35.4   8.72 7.79     ~ 384 0
24 M 53 GlC 13 12 55.25 +18 10 05.4   8.95 7.79     ~ 776 0
25 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 580 0
26 NAME Centaurus A Sy2 13 25 27.6039817176 -43 01 09.493008456   8.18 6.84 6.66   ~ 4263 3
27 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 3252 0
28 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2378 0
29 NGC 5286 GlC 13 46 26.81 -51 22 27.3   9.18 8.31     ~ 405 0
30 NGC 5466 GlC 14 05 27.29 +28 32 04.0   10.5 9.70     ~ 781 0
31 NGC 5634 GlC 14 29 37.28 -05 58 35.1   10.69 10.05     ~ 279 0
32 NGC 5694 GlC 14 39 36.52 -26 32 18.0   11.58 10.89     ~ 284 0
33 IC 4499 GlC 15 00 18.57 -82 12 49.6     8.56     ~ 329 0
34 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 379 0
35 NAME Serpens Dwarf GlC 15 16 05.30 -00 06 41.0   15.1       ~ 687 1
36 NGC 5897 GlC 15 17 24.40 -21 00 36.4   10.16 8.52     ~ 363 0
37 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1879 0
38 NGC 5927 GlC 15 28 00.69 -50 40 22.9   10.13 8.86     ~ 432 0
39 NGC 5946 GlC 15 35 28.58 -50 39 35.0   11.98 10.72     ~ 179 0
40 ESO 224-8 OpC 15 39 05.4 -50 03 02           ~ 59 0
41 NGC 5986 GlC 15 46 03.00 -37 47 11.1     6.92     ~ 339 0
42 Cl Lynga 7 GlC 16 11 03.65 -55 19 04.0           ~ 102 0
43 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 671 0
44 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1766 0
45 NGC 6101 GlC 16 25 48.12 -72 12 07.9   10.90 10.08     ~ 266 0
46 NGC 6144 GlC 16 27 13.86 -26 01 24.6   10.55 9.63     ~ 224 0
47 NGC 6139 GlC 16 27 39.987 -38 50 57.03   11.03 9.68     ~ 195 0
48 ESO 390-6 GlC 16 28 40.10 -35 21 13.0     12.0     ~ 88 0
49 M 107 GlC 16 32 31.86 -13 03 13.6   9.96 8.85     ~ 750 0
50 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2107 0
51 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 343 0
52 M 12 GlC 16 47 14.18 -01 56 54.7   8.52 6.07     ~ 627 0
53 NGC 6235 GlC 16 53 25.36 -22 10 38.8   11.99 7.20     ~ 173 0
54 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 745 0
55 NGC 6256 GlC 16 59 32.68 -37 07 17.1           ~ 137 0
56 M 62 GlC 17 01 12.60 -30 06 44.5   8.55 7.39     ~ 563 0
57 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 344 1
58 NGC 6284 GlC 17 04 28.747 -24 45 51.22   10.72 7.43     ~ 259 0
59 NGC 6287 GlC 17 05 09.4906767360 -22 42 28.099250172   11.49 10.30     ~ 209 0
60 NGC 6293 GlC 17 10 10.42 -26 34 54.2   9.96 9.02     ~ 259 0
61 NGC 6304 GlC 17 14 32.25 -29 27 43.3   10.33 9.03     ~ 330 0
62 NGC 6316 GlC 17 16 37.42 -28 08 24.0   10.33 9.03     ~ 194 0
63 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2001 0
64 NGC 6325 GlC 17 17 59.27 -23 45 57.7   11.49       ~ 159 0
65 M 9 GlC 17 19 11.78 -18 30 58.5   9.36 8.42     ~ 297 0
66 NGC 6342 GlC 17 21 10.14 -19 35 14.7   11.25 10.01     ~ 267 0
67 NGC 6356 GlC 17 23 34.99 -17 48 46.9   10.01 7.42     ~ 334 1
68 NGC 6355 GlC 17 23 58.65 -26 21 12.3   12.46 11.05     ~ 141 0
69 NGC 6352 GlC 17 25 29.11 -48 25 19.8   9.95 8.87     ~ 369 0
70 NGC 6366 GlC 17 27 44.24 -05 04 47.5           ~ 285 0
71 NGC 6362 GlC 17 31 54.99 -67 02 54.0   9.72 8.86     ~ 537 0
72 NGC 6380 GlC 17 34 28.00 -39 04 09.0           ~ 121 0
73 ESO 455-23 GlC 17 35 47.80 -30 28 11.0           ~ 223 0
74 Ton 2 GlC 17 36 10.500 -38 33 12.00           ~ 82 0
75 NGC 6388 GlC 17 36 17.461 -44 44 08.34   7.40       ~ 865 1
76 M 14 GlC 17 37 36.15 -03 14 45.3   9.55 5.73     ~ 350 0
77 NGC 6401 GlC 17 38 36.93 -23 54 31.5   11.31 10.71     ~ 153 0
78 NGC 6397 GlC 17 40 42.09 -53 40 27.6   7.39 5.17     ~ 1885 1
79 ESO 520-21 GlC 17 43 42.20 -26 13 21.0           ~ 164 0
80 NGC 6426 GlC 17 44 54.71 +03 10 12.5           ~ 204 0
81 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13084 0
82 NGC 6440 GlC 17 48 52.67 -20 21 34.5   12.01 10.10     ~ 508 1
83 NGC 6441 GlC 17 50 13.06 -37 03 05.2   9.26 8.00     ~ 830 0
84 NAME UKS 1 GlC 17 54 27.20 -24 08 43.0           ~ 81 0
85 NGC 6496 GlC 17 59 03.68 -44 15 57.4   9.96       ~ 206 0
86 NGC 6517 GlC 18 01 50.376 -08 57 34.39   11.08       ~ 161 0
87 NGC 6535 GlC 18 03 50.51 -00 17 51.5   11.35 9.85     ~ 269 0
88 NGC 6539 GlC 18 04 49.74 -07 35 09.1           ~ 208 0
89 NGC 6541 GlC 18 08 02.36 -43 42 53.6   8.06 7.32     ~ 348 1
90 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 574 0
91 IC 1276 GlC 18 10 44.26 -07 12 27.3           ~ 111 0
92 ESO 522-1 GlC 18 12 15.80 -22 44 31.0     14.86     ~ 86 1
93 NGC 6569 GlC 18 13 38.88 -31 49 35.2   10.78 9.47     ~ 216 0
94 NGC 6584 GlC 18 18 37.60 -52 12 56.8   10.32 8.17     ~ 265 0
95 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 827 1
96 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 719 0
97 NGC 6638 GlC 18 30 56.25 -25 29 47.1   10.81 9.68     ~ 216 0
98 M 69 GlC 18 31 23.10 -32 20 53.1   9.32 8.31     ~ 438 1
99 NGC 6642 GlC 18 31 54.23 -23 28 34.1   11.30 10.24     ~ 183 0
100 NGC 6652 GlC 18 35 45.63 -32 59 26.6   10.64 9.75     ~ 393 0
101 M 22 GlC 18 36 23.94 -23 54 17.1   7.16 6.17     ~ 1300 0
102 ESO 591-12 GlC 18 41 29.90 -19 49 33.0           ~ 104 0
103 M 70 GlC 18 43 12.76 -32 17 31.6   9.76 9.06     ~ 355 0
104 NGC 6712 GlC 18 53 04.32 -08 42 21.5   9.85 8.69     ~ 494 0
105 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1003 0
106 NGC 6723 GlC 18 59 33.15 -36 37 56.1           ~ 469 0
107 NGC 6749 GlC 19 05 15.36 +01 54 00.0     12.4     ~ 143 0
108 NGC 6752 GlC 19 10 52.11 -59 59 04.4   6.96 6.28     ~ 1902 0
109 NGC 6760 GlC 19 11 12.06 +01 01 49.7   11.37 9.78     ~ 220 0
110 M 56 GlC 19 16 35.57 +30 11 00.5   8.90       ~ 393 0
111 GCl 111 GlC 19 18 02.10 +18 34 18.0           ~ 98 0
112 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 810 0
113 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 295 0
114 GCl 114 GlC 19 45 14.40 -08 00 26.0     7.54     ~ 129 0
115 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 1076 0
116 M 75 GlC 20 06 04.841 -21 55 20.14     8.26     ~ 341 0
117 NGC 6934 GlC 20 34 11.37 +07 24 16.1   10.48 9.75     ~ 390 0
118 M 72 GlC 20 53 27.70 -12 32 14.3   9.95 8.96     ~ 394 0
119 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 505 0
120 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 3029 0
121 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 968 1
122 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 983 0
123 NGC 7492 GlC 23 08 26.68 -15 36 41.3     10.48     ~ 281 0
124 NAME Galactic Bulge reg ~ ~           ~ 3895 0
125 NAME Monoceros Stream St* ~ ~           ~ 337 0

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2022.08.10-07:34:38

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