2021RAA....21..108I

Query : 2021RAA....21..108I

2021RAA....21..108I - Research in Astron. and astroph., 21, 108-108 (2021/May-0)

Self-similar orbit-averaged Fokker-Planck equation for isotropic spherical dense clusters (iii) Application to Galactic globular clusters.

ITO Y.

Abstract (from CDS):

Fitting parametric models to globular clusters' structural profiles has been essential for the study of stellar dynamics. It provides their important structural parameters, such as the concentrations and core radii of the clusters. However, existing parametric models can apply only to non-collapsing-core clusters in the early relaxation-evolution stage. Hence, a single parametric model cannot provide globular clusters' structural parameters in both the early and late evolution stages. We have recently found an accurate spectral solution for the self-similar orbit-averaged Fokker-Planck (OAFP) equation to model collapsingcore clusters at the late evolution stage. The present work establishes a new parametric model by combining the self-similar OAFP- and polytropic- models. Although it is a single-mass and isotropic model, the new model applies to at least fifty-five Galactic globular clusters with resolved cores in all the evolution stages. As a main result, we show the characteristics of the relaxation times against the concentrations of the clusters. We also affirm that the structures of low-concentration clusters are polytropic in the Milky Way.

Abstract Copyright: © 2021 National Astronomical Observatories

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

Simbad objects: 69

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Number of rows : 69
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 1130 0
2 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 579 0
3 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
4 M 79 GlC 05 24 10.59 -24 31 27.3     8.16     ~ 883 0
5 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
6 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 354 1
7 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 1001 0
8 GCl 17 GlC 11 29 16.80 +28 58 25.0   14.4       ~ 379 1
9 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
10 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
11 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 675 0
12 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
13 NGC 5229 LSB 13 34 02.831 +47 54 55.68   14.6       ~ 149 0
14 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
15 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 887 0
16 NGC 5634 GlC 14 29 37.28 -05 58 35.1   10.69 10.05     ~ 333 0
17 NGC 5694 GlC 14 39 36.52 -26 32 18.0           ~ 323 0
18 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 441 0
19 NGC 5897 GlC 15 17 24.40 -21 00 36.4   10.16 8.52     ~ 424 0
20 NGC 5946 GlC 15 35 28.58 -50 39 35.0           ~ 210 0
21 NGC 5986 GlC 15 46 03.00 -37 47 11.1     6.92     ~ 408 0
22 GCl 38 GlC 16 10 59.00 +14 57 42.0           ~ 399 0
23 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 780 0
24 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
25 NGC 6101 GlC 16 25 48.12 -72 12 07.9           ~ 337 0
26 NGC 6144 GlC 16 27 13.86 -26 01 24.6           ~ 268 0
27 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
28 NGC 6229 GlC 16 46 58.641 +47 31 36.38   9.38 9.86     ~ 397 0
29 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 857 0
30 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 406 1
31 NGC 6304 GlC 17 14 32.25 -29 27 43.3           ~ 394 0
32 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
33 M 9 GlC 17 19 11.78 -18 30 58.5   9.36 8.42     ~ 348 0
34 NGC 6342 GlC 17 21 10.14 -19 35 14.7     10.01     ~ 310 0
35 NGC 6356 GlC 17 23 34.99 -17 48 46.9   10.01 7.42     ~ 372 1
36 NGC 6352 GlC 17 25 29.11 -48 25 19.8           ~ 425 0
37 ESO 454-29 GlC 17 27 33.24 -30 48 07.8           ~ 278 0
38 ESO 455-23 GlC 17 35 47.80 -30 28 11.0           ~ 285 0
39 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 988 1
40 M 14 GlC 17 37 36.15 -03 14 45.3   9.55 5.73     ~ 420 0
41 NGC 6401 GlC 17 38 36.93 -23 54 31.5   11.31 10.71     ~ 203 0
42 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
43 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
44 NGC 6440 GlC 17 48 52.67 -20 21 34.5           ~ 592 0
45 NGC 6453 GlC 17 50 51.77 -34 35 55.1   10.49       ~ 189 0
46 NGC 6496 GlC 17 59 03.68 -44 15 57.4   9.96       ~ 251 0
47 NGC 6517 GlC 18 01 50.376 -08 57 34.39   11.08       ~ 215 0
48 NGC 6522 GlC 18 03 34.08 -30 02 02.3           ~ 569 0
49 NGC 6544 GlC 18 07 20.58 -24 59 50.4   11.36 9.90     ~ 332 0
50 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 644 0
51 NGC 6558 GlC 18 10 17.6 -31 45 50           ~ 265 0
52 NGC 6569 GlC 18 13 38.88 -31 49 35.2   10.78 9.47     ~ 276 0
53 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 939 1
54 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
55 NGC 6638 GlC 18 30 56.25 -25 29 47.1   10.81 9.68     ~ 258 0
56 NGC 6652 GlC 18 35 45.63 -32 59 26.6           ~ 474 0
57 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
58 NGC 6712 GlC 18 53 04.32 -08 42 21.5           ~ 550 0
59 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0
60 NGC 6723 GlC 18 59 33.15 -36 37 56.1           ~ 543 0
61 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
62 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 913 0
63 M 71 GlC 19 53 46.49 +18 46 45.1           ~ 1190 0
64 M 75 GlC 20 06 04.841 -21 55 20.14     8.26     ~ 394 0
65 NGC 6934 GlC 20 34 11.37 +07 24 16.1           ~ 459 0
66 M 72 GlC 20 53 27.70 -12 32 14.3     8.96     ~ 465 0
67 NGC 7006 GlC 21 01 29.465 +16 11 16.49     10.46     ~ 562 0
68 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
69 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0

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