2019MNRAS.483.1737K

Query : 2019MNRAS.483.1737K

2019MNRAS.483.1737K - Mon. Not. R. Astron. Soc., 483, 1737-1743 (2019/February-3)

Search for extra-tidal RR Lyrae stars in Milky Way globular clusters from Gaia DR2.

KUNDU R., MINNITI D. and SINGH H.P.

Abstract (from CDS):

We used extra-tidal RR Lyrae stars to study the dynamics of Galactic globular clusters and know how effects like dynamical friction and tidal disruption affect these clusters. The Gaia DR2 catalogue for RR Lyrae stars (Clementini et al. 2018) is used along with the proper motions and tidal radii data for the globular clusters compiled from literature. A sample of 56 Galactic globular clusters is analysed. Out of these 56 Galactic globular clusters, only 11 have extra-tidal RR Lyrae stars. However, only two clusters, namely, NGC 3201 and NGC 5024, have enough extra-tidal RR Lyrae stars to draw interesting conclusions. NGC 3201 has 13 extra-tidal RR Lyrae stars which are asymmetrically distributed around its centre with more number of stars in its trailing zone than its leading part. We conclude that these asymmetrical tidal tails are due to the combined effect of tidal disruption and the stripped debris from the cluster. On the other hand, NGC 5024 has five extra-tidal RR Lyrae stars, four of them are concentrated in a region which is at a distance of about three times the tidal radius from its centre. These may be the stars that are being ripped apart from the cluster due to tidal disruption. The presence of these extra-tidal RR Lyrae stars in the clusters can be an indication that more cluster stars are present outside their tidal radii which may be revealed by deep wide field colour-magnitude diagrams of the clusters.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): proper motion - stars: variables: RR Lyrae - globular clusters: individual: (NGC 3201, NGC 5024)

Simbad objects: 94

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Number of rows : 94
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 3917 0
2 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1085 0
3 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1430 0
4 Cl* NGC 1904 SAW V15 RR* 05 23 23.7599693472 -24 27 46.502223228     16.173   15.854 ~ 6 0
5 M 79 GlC 05 24 10.59 -24 31 27.3     8.16     ~ 817 0
6 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1420 0
7 Cl* NGC 3201 SAW V96 RR* 10 13 05.1580195872 -46 32 03.088349232           ~ 6 0
8 Cl* NGC 3201 SAW V91 RR* 10 15 11.3086963056 -46 04 43.234935636           ~ 5 0
9 Cl* NGC 3201 SAW V61 RR* 10 15 49.2303453216 -46 21 39.733418988           kA6hF3.5 7 0
10 SV* HV 10328 RR* 10 15 55.7417734968 -46 27 55.281681792           ~ 8 0
11 Cl* NGC 3201 SAW V53 RR* 10 16 13.0458033936 -46 37 01.182402300           ~ 7 0
12 Gaia DR2 5413541539133152512 RR* 10 16 28.1961500040 -46 45 49.625561880           ~ 3 0
13 SV* HV 10330 RR* 10 16 35.7805381632 -46 10 31.086173388   15.02 14.52     ~ 10 0
14 SV* HV 10335 RR* 10 17 16.2601481352 -46 08 10.752728820           ~ 9 0
15 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 885 0
16 Cl* NGC 3201 SAW V88 RR* 10 18 00.4946135568 -46 06 40.115859984           ~ 8 0
17 Cl* NGC 3201 SAW V54 RR* 10 18 41.6618977680 -46 37 53.400601128           ~ 8 0
18 Cl* NGC 3201 SAW V87 RR* 10 19 15.1500469488 -46 32 07.911767400           ~ 6 0
19 Cl* NGC 3201 SAW V89 RR* 10 19 53.5775395224 -46 28 00.059156292           ~ 6 0
20 Cl* NGC 3201 SAW V93 RR* 10 20 51.1493072952 -46 28 03.624299544           ~ 6 0
21 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 573 0
22 Cl* NGC 4147 SAW V19 RR* 12 10 21.9542431320 +18 35 01.712817708   17.19 16.96     ~ 10 0
23 NGC 4372 GlC 12 25 45.43 -72 39 32.7   10.86 9.85     ~ 303 0
24 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 997 0
25 NGC 4833 GlC 12 59 33.92 -70 52 35.4           ~ 425 0
26 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 836 0
27 Cl* NGC 5024 SAN 25 RR* 13 13 14.3534590344 +18 22 04.015679844   17.0       ~ 10 0
28 Cl* NGC 5053 LY 9 RR* 13 15 59.3368425192 +17 44 27.677344920   16.41 16.61     ~ 21 0
29 Cl* NGC 5053 SAN 4 RR* 13 16 11.9055670944 +17 48 10.771939656   16.5 16.59     ~ 15 0
30 Cl* NGC 5053 BAA V2 RR* 13 16 12.3784835592 +17 41 46.745480544   16.88 16.67   16.14 ~ 13 0
31 Cl* NGC 5053 BAA V7 RR* 13 16 19.7428917552 +17 44 38.378868972   16.93 16.53   16.34 ~ 14 0
32 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3427 0
33 Cl* NGC 5139 SAW V173 RR* 13 29 43.1305326864 -47 16 53.792433624     14.41     ~ 9 0
34 V* WY CVn RR* 13 40 47.6226768696 +28 33 26.202370752   16.16 15.44   14.75 ~ 21 0
35 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2479 0
36 V* WZ CVn RR* 13 42 20.4029770536 +27 53 51.621402876   16.17 15.65     ~ 18 0
37 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 828 0
38 Cl* NGC 5466 SAW V1 RR* 14 06 33.1193627568 +28 30 25.489878660     16.55     ~ 11 0
39 Cl* Palomar 5 SAW V2 RR* 15 15 57.9506377968 -00 11 23.432719092     17.33     ~ 9 0
40 NAME Serpens Dwarf GlC 15 16 05.30 -00 06 41.0   15.1       ~ 734 1
41 2MASS J15163470-0004249 RR* 15 16 34.7129946072 -00 04 24.985170336           A0 6 0
42 NGC 5897 GlC 15 17 24.40 -21 00 36.4   10.16 8.52     ~ 389 0
43 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 1978 0
44 NGC 5927 GlC 15 28 00.69 -50 40 22.9           ~ 462 0
45 NGC 5986 GlC 15 46 03.00 -37 47 11.1     6.92     ~ 374 0
46 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 716 0
47 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1850 0
48 NGC 6144 GlC 16 27 13.86 -26 01 24.6           ~ 243 0
49 M 107 GlC 16 32 31.86 -13 03 13.6           ~ 786 0
50 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2193 0
51 M 12 GlC 16 47 14.18 -01 56 54.7     6.07     ~ 677 0
52 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 789 0
53 M 62 GlC 17 01 12.60 -30 06 44.5           ~ 620 0
54 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 369 1
55 NGC 6284 GlC 17 04 28.747 -24 45 51.22   10.72 7.43     ~ 278 0
56 NGC 6287 GlC 17 05 09.4906767360 -22 42 28.099250172   11.49 10.30     ~ 224 0
57 NGC 6293 GlC 17 10 10.42 -26 34 54.2           ~ 281 0
58 NGC 6304 GlC 17 14 32.25 -29 27 43.3           ~ 359 0
59 NGC 6316 GlC 17 16 37.42 -28 08 24.0   10.33 9.03     ~ 216 0
60 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2116 0
61 LINEAR 20412789 RR* 17 17 28.4370797544 +42 45 14.458921020     15.06     ~ 9 0
62 M 9 GlC 17 19 11.78 -18 30 58.5   9.36 8.42     ~ 317 0
63 V* V1910 Oph RR* 17 20 40.5226323720 -18 39 02.375640576         15.536 ~ 8 0
64 NGC 6342 GlC 17 21 10.14 -19 35 14.7     10.01     ~ 286 0
65 NGC 6356 GlC 17 23 34.99 -17 48 46.9   10.01 7.42     ~ 350 1
66 NGC 6362 GlC 17 31 54.99 -67 02 54.0           ~ 585 0
67 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 914 1
68 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 1976 0
69 OGLE BLG-RRLYR-3168 RR* 17 48 47.7523863744 -37 01 10.930385784     17.027   15.826 ~ 9 0
70 OGLE BLG-RRLYR-3613 RR* 17 49 41.6733003672 -37 14 31.084240776     15.853   14.531 ~ 9 0
71 OGLE BLG-RRLYR-3774 RR* 17 49 58.5797048592 -37 10 39.838982628     16.444   15.324 ~ 10 0
72 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 884 0
73 OGLE BLG-RRLYR-30513 RR* 17 50 58.5639094680 -37 02 18.628815264     16.606   15.323 ~ 9 0
74 OGLE BLG-RRLYR-30603 RR* 17 51 10.2237158280 -37 01 06.459156948     17.274   16.065 ~ 9 0
75 OGLE BLG-RRLYR-30792 RR* 17 51 35.2563466488 -37 05 25.401288012     17.752   16.663 ~ 8 0
76 OGLE BLG-RRLYR-30928 RR* 17 51 50.8528208016 -36 58 24.967094772     16.513   15.425 ~ 7 0
77 OGLE BLG-RRLYR-31080 RR* 17 52 15.3486486096 -37 03 58.738773780     16.622   15.692 ~ 8 0
78 NGC 6522 GlC 18 03 34.08 -30 02 02.3           ~ 524 0
79 Cl* NGC 6584 SKP V40 RR* 18 18 18.6449604408 -52 18 34.490531808           ~ 3 0
80 NGC 6584 GlC 18 18 37.60 -52 12 56.8     8.17     ~ 288 0
81 Cl* NGC 6584 SKP V44 RR* 18 19 11.2387751664 -52 05 52.036609596           ~ 3 0
82 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 770 0
83 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1379 0
84 NGC 6712 GlC 18 53 04.32 -08 42 21.5           ~ 519 0
85 NGC 6723 GlC 18 59 33.15 -36 37 56.1           ~ 500 0
86 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2001 0
87 M 56 GlC 19 16 35.57 +30 11 00.5           ~ 422 0
88 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 854 0
89 M 71 GlC 19 53 46.49 +18 46 45.1           ~ 1128 0
90 NGC 6934 GlC 20 34 11.37 +07 24 16.1           ~ 422 0
91 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3140 0
92 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1049 0
93 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 516 0
94 GCl 124 GlC 23 06 44.48 +12 46 19.2   15.6       ~ 277 1

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