2020MNRAS.499.3522B

Query : 2020MNRAS.499.3522B

2020MNRAS.499.3522B - Mon. Not. R. Astron. Soc., 499, 3522-3533 (2020/December-2)

Small-scale star formation as revealed by VVVX galactic cluster candidates.

BORISSOVA J., KURTEV R., AMARINHO N., ALONSO-GARCIA J., RAMIREZ ALEGRIA S., BERNAL S., MEDINA N., CHENE A.-N., IVANOV V.D., LUCAS P.W. and MINNITI D.

Abstract (from CDS):

We report a search and analysis of obscured cluster candidates in the 'VISTA Variables in the Via Lactea eXtended (VVVX)' ESO Public Survey area encompassing the region between 229.○4 < l < 295.○2 and -4.○3 < b < 4.○4 of the southern Galactic disc. We discover and propose 88 new clusters. We improve the completeness of the embedded cluster population in this region, adding small size (linear diameters of 0.2-1.4 pc) and relatively far objects (heliocentric distance between 2 and 4 kpc) to existing catalogues. Nine candidates are proposed to be older open cluster candidates. Three of them (VVVX CL 204, CL 207, CL 208) have sufficient numbers of well-resolved stellar members to allow us to determine some basic cluster parameters. We confirm their nature as older, low-mass open clusters. Photometric analysis of 15 known clusters shows that they have ages above 20 Myr, and masses below 2000 M☉: in general, their proper motions follow the motion of the disc. We outline some groups of clusters, most probably formed within the same dust complex. Broadly, our candidates follow the network of filamentary structure in the remaining dust. Thus, in this part of the southern disc of the Galaxy, we have found recent star formation, producing small size and young clusters, in addition to the well-known, massive young clusters, including NGC 3603, Westerlund 2, and the Carina Nebula Complex.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Galaxy: disc - open clusters and associations: general - infrared: stars - submillimetre: ISM

Nomenclature: Table A1: VVVX CLNNN (Nos CL121-CL208).

Simbad objects: 91

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Number of rows : 91
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 VVVX CL121 Cl* 07 18 50.8 -18 22 12           ~ 1 0
2 VVVX CL122 Cl* 07 18 52.0 -18 22 50           ~ 1 0
3 VVVX CL123 Cl* 07 19 10.3 -17 49 26           ~ 1 0
4 VVVX CL200 Cl* 07 19 27.5 -17 52 16           ~ 1 0
5 VVVX CL124 Cl* 07 23 01.4 -14 41 28           ~ 1 0
6 VVVX CL125 Cl* 07 23 05.2 -14 54 54           ~ 1 0
7 VVVX CL126 Cl* 07 23 05.6 -14 42 39           ~ 1 0
8 VVVX CL201 Cl* 07 27 35.5 -23 05 24           ~ 1 0
9 VVVX CL127 Cl* 07 27 56.2 -20 40 08           ~ 1 0
10 VVVX CL128 Cl* 07 28 53.8 -21 27 05           ~ 1 0
11 VVVX CL129 Cl* 07 29 58.5 -18 28 22           ~ 1 0
12 VVVX CL130 Cl* 07 30 05.1 -20 44 18           ~ 1 0
13 VVVX CL131 Cl* 07 31 59.1 -24 39 10           ~ 1 0
14 VVVX CL132 Cl* 07 32 01.0 -24 38 32           ~ 1 0
15 VVVX CL133 Cl* 07 33 17.7 -14 50 58           ~ 1 0
16 VVVX CL134 Cl* 07 33 19.9 -22 10 57           ~ 1 0
17 VVVX CL135 Cl* 07 33 23.0 -14 51 07           ~ 1 0
18 VVVX CL136 Cl* 07 33 29.5 -14 51 24           ~ 1 0
19 VVVX CL137 Cl* 07 33 57.5 -22 00 11           ~ 1 0
20 VVVX CL138 Cl* 07 35 53.0 -19 16 22           ~ 1 0
21 VVVX CL139 Cl* 07 51 35.0 -28 47 59           ~ 1 0
22 VVVX CL140 Cl* 07 54 15.4 -35 04 48           ~ 1 0
23 VVVX CL141 Cl* 07 54 16.4 -35 04 10           ~ 1 0
24 VVVX CL142 Cl* 07 54 56.0 -34 49 43           ~ 1 0
25 VVVX CL143 Cl* 08 02 30.1 -28 23 53           ~ 1 0
26 VVVX CL144 Cl* 08 02 45.5 -28 26 02           ~ 1 0
27 VVVX CL145 Cl* 08 06 19.9 -38 25 41           ~ 1 0
28 VVVX CL202 Cl* 08 06 32.4 -37 30 02           ~ 1 0
29 VVVX CL146 Cl* 08 10 42.4 -36 03 08           ~ 1 0
30 VVVX CL147 Cl* 08 11 00.5 -36 04 50           ~ 1 0
31 VVVX CL203 Cl* 08 16 36.3 -36 14 16           ~ 1 0
32 VVVX CL148 Cl* 08 17 52.6 -38 27 23           ~ 1 0
33 VVVX CL149 Cl* 08 20 46.0 -36 21 10           ~ 1 0
34 VVVX CL150 Cl* 08 23 04.1 -41 55 57           ~ 1 0
35 VVVX CL151 Cl* 08 25 18.8 -41 14 34           ~ 1 0
36 VVVX CL152 Cl* 08 26 17.2 -40 48 41           ~ 1 0
37 VVVX CL153 Cl* 08 26 33.5 -41 00 38           ~ 1 0
38 VVVX CL154 Cl* 08 29 05.7 -41 06 49           ~ 1 0
39 VVVX CL155 Cl* 08 29 08.7 -41 08 33           ~ 1 0
40 VVVX CL156 Cl* 08 29 19.7 -42 34 38           ~ 1 0
41 VVVX CL157 Cl* 08 32 07.8 -43 13 51           ~ 1 0
42 VVVX CL158 Cl* 08 32 12.9 -42 04 26           ~ 1 0
43 VVVX CL204 Cl* 08 33 48.6 -44 26 54           ~ 1 0
44 VVVX CL159 Cl* 08 34 27.1 -43 34 47           ~ 1 0
45 VVVX CL160 Cl* 08 44 16.3 -46 12 00           ~ 1 0
46 VVVX CL161 Cl* 08 48 46.7 -42 44 33           ~ 1 0
47 VVVX CL162 Cl* 08 48 47.0 -42 45 04           ~ 1 0
48 VVVX CL163 Cl* 08 49 06.2 -45 15 40           ~ 1 0
49 VVVX CL164 Cl* 08 49 12.0 -41 34 35           ~ 1 0
50 VVVX CL165 Cl* 08 49 13.5 -43 36 23           ~ 1 0
51 VVVX CL166 Cl* 08 50 38.9 -45 08 20           ~ 1 0
52 VVVX CL167 Cl* 08 52 33.4 -48 50 52           ~ 1 0
53 VVVX CL168 Cl* 08 52 41.5 -43 37 05           ~ 1 0
54 VVVX CL205 Cl* 08 57 44.6 -43 11 42           ~ 1 0
55 VVVX CL169 Cl* 09 03 14.4 -48 55 18           ~ 1 0
56 VVVX CL170 Cl* 09 03 27.0 -48 31 18           ~ 1 0
57 VVVX CL171 Cl* 09 03 32.1 -48 28 44           ~ 1 0
58 VVVX CL172 Cl* 09 03 32.2 -48 27 42           ~ 1 0
59 VVVX CL173 Cl* 09 03 35.8 -46 43 17           ~ 1 0
60 VVVX CL174 Cl* 09 04 22.8 -48 54 16           ~ 1 0
61 VVVX CL175 Cl* 09 04 30.2 -48 49 33           ~ 1 0
62 VVVX CL206 Cl* 09 09 52.5 -48 51 59           ~ 1 0
63 VVVX CL176 Cl* 09 11 08.4 -48 15 56           ~ 1 0
64 VVVX CL177 Cl* 09 11 33.6 -47 38 01           ~ 1 0
65 VVVX CL178 Cl* 09 13 20.0 -49 45 49           ~ 1 0
66 VVVX CL179 Cl* 09 14 50.4 -47 34 39           ~ 1 0
67 VVVX CL180 Cl* 09 14 53.0 -47 36 03           ~ 1 0
68 VVVX CL181 Cl* 09 25 08.6 -53 28 22           ~ 1 0
69 VVVX CL182 Cl* 09 25 11.0 -52 04 18           ~ 1 0
70 VVVX CL207 Cl* 09 42 31.2 -52 25 50           ~ 1 0
71 VVVX CL208 Cl* 09 54 20.0 -56 25 25           ~ 1 0
72 VVVX CL183 Cl* 09 58 02.7 -57 57 52           ~ 1 0
73 VVVX CL184 Cl* 10 10 46.9 -56 46 43           ~ 1 0
74 VVVX CL185 Cl* 10 11 03.3 -56 53 37           ~ 1 0
75 VVVX CL186 Cl* 10 11 14.9 -58 58 20           ~ 1 0
76 VVVX CL187 Cl* 10 14 04.2 -57 41 31           ~ 1 0
77 VVVX CL188 Cl* 10 14 16.4 -57 43 13           ~ 1 0
78 VVVX CL189 Cl* 10 14 32.6 -57 42 45           ~ 1 0
79 VVVX CL190 Cl* 10 15 04.6 -57 50 59           ~ 1 0
80 VVVX CL191 Cl* 10 17 28.4 -58 19 51           ~ 1 0
81 VVVX CL192 Cl* 10 18 57.0 -58 09 15           ~ 1 0
82 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49           ~ 400 0
83 VVVX CL193 Cl* 10 25 42.6 -58 05 51           ~ 1 0
84 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
85 VVVX CL194 Cl* 10 52 14.9 -56 46 35           ~ 1 0
86 VVVX CL195 Cl* 10 57 25.2 -62 53 07           ~ 1 0
87 VVVX CL196 Cl* 10 57 34.0 -62 58 53           ~ 1 0
88 VVVX CL197 Cl* 11 01 10.8 -60 56 59           ~ 1 0
89 VVVX CL198 Cl* 11 01 43.8 -60 57 31           ~ 1 0
90 NGC 3603 OpC 11 14 57.9 -61 14 32           ~ 1136 1
91 VVVX CL199 Cl* 11 34 33.0 -63 58 04           ~ 1 0

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