2019MNRAS.487.3140P

Query : 2019MNRAS.487.3140P

2019MNRAS.487.3140P - Mon. Not. R. Astron. Soc., 487, 3140-3149 (2019/August-2)

Analysis of the physical nature of 22 New VVV Survey Globular Cluster candidates in the Milky Way bulge.

PALMA T., MINNITI D., ALONSO-GARCIA J., CRESTANI J., NETZEL H., CLARIA J.J., SAITO R.K., DIAS B., FERNANDEZ-TRINCADO J.G., KAMMERS R., GEISLER D., GOMEZ M., HEMPEL M. and PULLEN J.

Abstract (from CDS):

In order to characterize 22 new globular cluster (GC) candidates in the Galactic bulge, we present their colour-magnitude diagrams (CMDs) and Ks-band luminosity functions (LFs) using the near-infrared VVV database as well as Gaia-DR2 proper motion data set. CMDs were obtained, on one hand, after properly decontaminating the observed diagrams from background/foreground disc stars and other sources. On the other hand, CMDs were also obtained based upon star selection in proper motion diagrams. Taking into account our deep CMDs and LFs analyses, we find that 17 out of 22 new GC candidates may be real and should therefore be followed up, while 5 candidates were discarded from the original sample. We also search for RR Lyrae and Mira variable stars in the fields of these new GC candidates. In particular, we confirm that Minni 40 may be a real cluster. If confirmed by further follow-up analysis, it would be the closest GC to the Galactic centre in projected angular distance, located only 0.5° away from it. We consider that it is very difficult to confirm the physical reality of these small, poorly-populated bulge GCs so in many cases alternative techniques are needed to corroborate our findings.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Galaxy: bulge - Globular clusters: general

Simbad objects: 67

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Number of rows : 67
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 [LQS2016] DES J0034-4902 GlC 00 33 59.60 -49 02 19.8           ~ 18 0
2 [KBT2017] Gaia 2 OpC 01 52 29.9 +53 01 57           ~ 20 0
3 * omi Cet Mi* 02 19 20.79210 -02 58 39.4956   7.63 6.53 5.03   M5-9IIIe+DA 1586 0
4 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
5 NAME Kim 3 Cl* 13 22 45.20 -30 36 03.6           ~ 26 0
6 [FSR2007] 1716 OpC 16 10 33.0 -53 44 12           ~ 63 0
7 Ryu 059 GlC 16 17 08.73 -44 35 35.3           ~ 12 0
8 [MGA2017] 9 Gl? 17 10 30 -33 15.1           ~ 2 0
9 [MGA2017] 16 Gl? 17 21 23 -32 49.3           ~ 2 0
10 Camargo 1102 Cl? 17 21 45 -26 32.7           ~ 6 0
11 [MGA2017] 41 Gl? 17 26 26.5 -28 44 26           ~ 2 0
12 [MGA2017] 18 Gl? 17 30 52 -27 16.6           ~ 2 0
13 ESO 455-11 GlC 17 31 05.20 -29 58 54.0           ~ 208 0
14 NAME Sequoia Cluster GlC 17 31 12.0 -39 48 30           ~ 154 0
15 [MGA2017] 43 Gl? 17 33 58.5 -27 00 30           ~ 3 0
16 ESO 455-23 GlC 17 35 47.80 -30 28 11.0           ~ 285 0
17 [MGA2017] 13 Gl? 17 35 54 -34 59.3           ~ 2 0
18 [MGA2017] 42 Gl? 17 36 37.5 -29 02 16           ~ 3 0
19 [MGA2017] 19 Gl? 17 40 31 -33 57.7           ~ 2 0
20 [MGA2017] 44 Gl? 17 42 21.5 -26 32 52           ~ 3 0
21 [MGA2017] 12 Gl? 17 42 36 -25 33.4           ~ 2 0
22 [MGA2017] 10 Gl? 17 42 46 -37 18.9           ~ 2 0
23 [MGA2017] 14 Gl? 17 43 03 -31 07.2           ~ 3 0
24 ESO 520-21 GlC 17 43 42.20 -26 13 21.0           ~ 211 0
25 [MGA2017] 25 Gl? 17 43 57.3 -33 56 30           ~ 3 0
26 [MGA2017] 15 Gl? 17 44 13 -32 47.4           ~ 2 0
27 [MGA2017] 26 Gl? 17 44 28.8 -34 48 20           ~ 2 0
28 [MGA2017] 11 Gl? 17 44 33 -34 43.4           ~ 3 0
29 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
30 [MGA2017] 22 GlC 17 48 51 -33 03.7           ~ 10 0
31 [MGA2017] 33 Gl? 17 49 51.8 -30 44 12           ~ 2 0
32 [MGA2017] 21 Gl? 17 50 41 -34 14.4           ~ 2 0
33 [MGA2017] 40 Gl? 17 50 42.5 -29 36 24           ~ 3 0
34 Cl Terzan 6 GlC 17 50 47.02873 -31 16 29.6900           ~ 214 0
35 [MGA2017] 20 Gl? 17 51 03 -29 50.5           ~ 3 0
36 [MGA2017] 27 Gl? 17 51 50.3 -33 51 59           ~ 3 0
37 [MGA2017] 35 Gl? 17 52 08.0 -28 25 14           ~ 3 0
38 [MGA2017] 39 Gl? 17 52 23.5 -29 17 40           ~ 3 0
39 [MGA2017] 29 Gl? 17 52 23.8 -32 17 55           ~ 2 0
40 [MGA2017] 28 Gl? 17 52 32.3 -33 29 59           ~ 4 0
41 [MGA2017] 38 Gl? 17 53 44.5 -30 01 15           ~ 3 0
42 [MGA2017] 30 Gl? 17 54 03.5 -31 18 37           ~ 2 0
43 [MGA2017] 34 Gl? 17 54 09.8 -28 25 51           ~ 3 0
44 [MGA2017] 23 Gl? 17 54 14.3 -36 09 09           ~ 4 0
45 [MGA2017] 36 Gl? 17 55 56.0 -29 58 14           ~ 3 0
46 [MGA2017] 37 Gl? 17 56 03.5 -29 34 50           ~ 2 0
47 [MGA2017] 5 Gl? 17 57 06 -35 41.4           ~ 3 0
48 [MGA2017] 31 Gl? 17 58 36.8 -27 38 21           ~ 3 0
49 [MGA2017] 7 Gl? 18 01 36 -33 55.1           ~ 2 0
50 [MGA2017] 24 Gl? 18 01 48.0 -28 21 37           ~ 2 0
51 NGC 6522 GlC 18 03 34.08 -30 02 02.3           ~ 569 0
52 NGC 6528 GlC 18 04 49.61 -30 03 20.8   12.12 10.65     ~ 561 0
53 [MGA2017] 32 Gl? 18 06 24.8 -29 18 29           ~ 2 0
54 Camargo 1103 Cl? 18 06 31 -25 09.7           ~ 8 0
55 [MGA2017] 6 Gl? 18 08 22 -31 06.3           ~ 5 0
56 [MGA2017] 17 Gl? 18 11 37 -29 32.3           ~ 3 0
57 [MGA2017] 4 Gl? 18 15 35 -28 18.0           ~ 4 0
58 [MGA2017] 3 Gl? 18 20 23 -32 24.5           ~ 6 0
59 [MGA2017] 8 Gl? 18 22 19 -26 37.7           ~ 4 0
60 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 939 1
61 [MGA2017] 2 Gl? 18 30 02 -28 26.4           ~ 6 0
62 M 69 GlC 18 31 23.10 -32 20 53.1           ~ 492 0
63 NGC 6642 GlC 18 31 54.23 -23 28 34.1   11.30 10.24     ~ 240 0
64 [MGA2017] 1 Gl? 18 34 48 -28 42.7           ~ 7 0
65 Ryu 879 GlC 18 45 28.02 -05 11 31.3           ~ 15 0
66 NAME Sagittarius II Gl? 19 52 40.5 -22 04 05           ~ 97 0
67 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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