2015A&A...581A.120B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST03:15:10

2015A&A...581A.120B - Astronomy and Astrophysics, volume 581A, 120-120 (2015/9-1)

Hundreds of new cluster candidates in the VISTA Variables in the Via Lactea survey DR1.

BARBA R.H., ROMAN-LOPES A., NILO CASTELLON J.L., FIRPO V., MINNITI D., LUCAS P., EMERSON J.P., HEMPEL M., SOTO M. and SAITO R.K.

Abstract (from CDS):

VISTA variables in the Via Lactea is an ESO Public survey dedicated to scanning the bulge and an adjacent portion of the Galactic disk in the fourth quadrant using the VISTA telescope and its near-infrared camera VIRCAM. One of the leading goals of the VVV survey is to contribute to knowledge of the star cluster population of the Milky Way. To improve the census of Galactic star clusters, we performed a systematic and careful scan of the JHKs images of the Galactic plane section of the VVV survey. Our detection procedure is based on a combination of stellar density maps and visual inspection of promising features in the J-, H-, and KS-band images. The material examined are VVV JHKS color-composite images corresponding to Data Release 1 of VVV. We report the discovery of 493 new infrared star cluster candidates. The analysis of the spatial distribution show that the clusters are very concentrated in the Galactic plane, presenting some local maxima around the position of large star-forming complexes, such as G305, RCW 95, and RCW 106. The vast majority of the new star cluster candidates are quite compact and generally surrounded by bright and/or dark nebulosities. IRAS point sources are associated with 59% of the sample, while 88% are associated with MSX point sources. GLIMPSE 8µm images of the cluster candidates show a variety of morphologies, with 292 clusters dominated by knotty sources, while 361 clusters show some kind of nebulosity in this wavelength regime. Spatial cross-correlation with young stellar objects, masers, and extended green-object catalogs suggest that a large sample of the new cluster candidates are extremely young. In particular, 104 star clusters associated with methanol masers are excellent candidates for ongoing massive star formation. Also, there is a special set of sixteen cluster candidates that present clear signposts of star-forming activity having associated simultaneosly dark nebulae, young stellar objects, extended green objects, and masers.

Abstract Copyright:

Journal keyword(s): open clusters and associations: general - Galaxy: stellar content - Galaxy: structure - infrared: stars - surveys

Nomenclature: Table 1: [BRN2015] La Serena NNN (Nos 1-493).

Simbad objects: 95

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Number of rows : 95

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 IC 2944 HII 11 38 20.00 -63 22 22.0           ~ 151 0
2 IC 2948 OpC 11 38.7 -63 32           ~ 24 0
3 IRAS 11368-6312 HII 11 39 12.6 -63 28 49           ~ 14 0
4 [BSG89] 294.97-1.73 Mas 11 39 13.94 -63 29 04.6           ~ 13 0
5 IRAS 11380-6311 IR 11 40 27.6 -63 27 56           ~ 4 0
6 SDC G295.137-0.594 DNe 11 43 17.00 -62 25 49.6           ~ 3 0
7 SSTGLMC G295.1417-00.5891 Y*? 11 43 19.94592 -62 25 34.9284           ~ 2 0
8 SDC G295.136-0.563 DNe 11 43 20.97 -62 24 01.3           ~ 3 0
9 [WMG70] 295.2-00.6 HII 11 43 29 -62 25.9           ~ 4 0
10 SNR G295.2-00.6 Rad 11 43 36 -62 26.6           ~ 4 0
11 IRAS 11412-6208 IR 11 43 37.9 -62 25 06           ~ 1 0
12 SDC G295.185-0.578 DNe 11 43 43.29 -62 25 39.7           ~ 3 0
13 C 1141-622 OpC 11 43 48 -62 31.0   6.33 6.3     ~ 67 0
14 IRAS 11421-6223 IR 11 44 33.6 -62 40 32           ~ 2 0
15 SDC G295.353-0.809 DNe 11 44 36.88 -62 41 39.8           ~ 3 0
16 SDC G295.362-0.787 DNe 11 44 44.63 -62 40 28.8           ~ 3 0
17 IRAS 11426-6301 Y*? 11 45 04.7455025564 -63 17 46.232062400           ~ 9 0
18 [FSR2007] 1595 OpC 11 47 05.0 -62 38 13           ~ 10 0
19 IRAS 11478-6152 IR 11 50 15.7 -62 08 57           ~ 1 0
20 SDC G295.860-0.139 DNe 11 50 16.95 -62 10 08.3           ~ 3 0
21 2MASS J11531093-6230199 Y*? 11 53 10.9140783949 -62 30 19.857354882           ~ 3 0
22 IRAS 11507-6213 IR 11 53 12.8 -62 30 19           ~ 3 0
23 IRAS 11517-6234 * 11 54 15.23 -62 51 39.1           ~ 1 0
24 IRAS 11528-6308 IR 11 55 24.1 -63 25 42           ~ 1 0
25 [BRN2015] La Serena 17 C?* 12 00 57.0 -63 04 04           ~ 2 0
26 IRAS 11583-6247 IR 12 00 57.0329335868 -63 04 09.531788424           ~ 8 0
27 SSTGLMC G297.2615-00.7433 Y*? 12 01 03.42888 -63 03 32.5800           ~ 2 0
28 SDC G297.268-0.776 DNe 12 01 03.60 -63 05 35.2           ~ 3 0
29 SDC G297.275-0.741 DNe 12 01 10.83 -63 03 35.6           ~ 3 0
30 SDC G297.313-0.294 DNe 12 02 15.72 -62 37 42.1           ~ 3 0
31 [BRN2015] La Serena 18 C?* 12 02 21.0 -62 36 32           ~ 2 0
32 IRAS 11597-6220 IR 12 02 21.9 -62 36 48           ~ 1 0
33 SDC G297.440-0.762 DNe 12 02 34.79 -63 06 44.5           ~ 3 0
34 [BRN2015] La Serena 19 C?* 12 02 45.0 -63 07 02           ~ 2 0
35 GAL 297.51-00.77 HII 12 03 08.5 -63 07 34           ~ 9 0
36 SDC G297.523-0.814 DNe 12 03 12.50 -63 10 44.0           ~ 3 0
37 [BRN2015] La Serena 20 C?* 12 03 16.0 -63 11 15           ~ 2 0
38 SDC G297.539-0.842 DNe 12 03 18.29 -63 12 34.8           ~ 3 0
39 IRAS 12013-6205 * 12 03 54.62 -62 22 29.1           ~ 1 0
40 SDC G297.451+0.002 DNe 12 03 54.98 -62 21 45.2           ~ 3 0
41 [BRN2015] La Serena 22 C?* 12 03 57.0 -63 17 08           ~ 2 0
42 IRAS 12013-6300 * 12 03 57.73 -63 17 13.7           ~ 3 0
43 [RC2004] G297.6-0.9+30.3 MoC 12 04 -63.3           ~ 2 0
44 SDC G298.479-0.314 DNe 12 12 15.93 -62 50 51.2           ~ 3 0
45 [MHL2007] G298.6992-01.7067 1 Y*? 12 12 19.20 -64 15 24.0           ~ 4 0
46 [BRN2015] La Serena 24 C?* 12 12 29.0 -62 49 49           ~ 2 0
47 2MASS J12122901-6249263 Y*? 12 12 29.0230526217 -62 49 26.340125389           ~ 2 0
48 SDC G298.519-0.212 DNe 12 12 44.66 -62 45 09.0           ~ 3 0
49 2MASS J12125619-6149587 Y*? 12 12 56.1955875582 -61 49 58.670177816           ~ 2 0
50 IRAS 12102-6133 IR 12 12 57.9 -61 50 17           ~ 4 0
51 GN 12.10.3 RNe 12 13 01 -61 50.5           ~ 6 0
52 DSH J1213.0-6242 OpC 12 13 01.7 -62 42 23           ~ 5 1
53 PN G298.4+00.6 PN 12 13 09.0 -61 50 28           ~ 6 0
54 IRAS 12132-6211 HII 12 15 54.3 -62 27 51           ~ 4 0
55 [BRN2015] La Serena 27 C?* 12 15 57.0 -62 28 00           ~ 2 0
56 SDC G298.858+0.151 DNe 12 16 06.47 -62 26 25.9           ~ 3 0
57 2MASS J12163625-6214175 Y*? 12 16 36.252 -62 14 17.52           ~ 2 0
58 EGO G298.89+0.37 of? 12 16 37.9 -62 13 41           ~ 2 0
59 SDC G298.901+0.349 DNe 12 16 42.67 -62 15 00.2           ~ 3 0
60 [BRN2015] La Serena 28 C?* 12 16 43.0 -62 14 26           ~ 2 0
61 AKARI-IRC-V1 J1216433-621424 of? 12 16 43.09392 -62 14 25.0872           ~ 4 0
62 SDC G298.904+0.354 DNe 12 16 44.49 -62 14 44.1           ~ 3 0
63 IRAS 12140-6157 mul 12 16 44.9 -62 14 39           ~ 2 0
64 2MASS J12164541-6214436 Y*? 12 16 45.41808 -62 14 43.6164           ~ 2 0
65 [BRN2015] La Serena 29 C?* 12 18 28.0 -62 37 17           ~ 2 0
66 IRAS 12157-6220 HII 12 18 28.4 -62 37 15           ~ 5 0
67 SDC G299.167+0.010 DNe 12 18 36.24 -62 37 17.4           ~ 3 0
68 [CPA2006] S175 bub 12 19 18.2 -62 56 03           ~ 3 0
69 SDC G299.302-0.305 DNe 12 19 25.71 -62 57 04.0           ~ 3 0
70 BRAN 386C RNe 12 19 38.3 -62 57 22           ~ 6 0
71 IRAS 12169-6240 * 12 19 38.3107825555 -62 57 21.794294067           ~ 2 0
72 SDC G299.333-0.294 DNe 12 19 42.75 -62 56 39.4           ~ 3 0
73 SDC G299.350-0.324 DNe 12 19 49.89 -62 58 33.5           ~ 3 0
74 BRAN 386E HII 12 19 53.5 -62 55 08           ~ 25 2
75 SDC G299.349-0.252 DNe 12 19 53.95 -62 54 16.0           ~ 3 0
76 [CPA2006] S174 HII 12 23 13.4 -62 40 47           ~ 4 0
77 IRAS 12210-6225 IR 12 23 47.8 -62 42 26           ~ 2 0
78 IRAS 12259-6309 FIR 12 28 44.3 -63 26 30           ~ 1 0
79 2MASS J12285319-6302460 Y*? 12 28 53.198 -63 02 46.05           ~ 2 0
80 SDC G300.743+0.128 DNe 12 32 21.79 -62 39 44.5           ~ 3 0
81 IRAS 12295-6224 IR 12 32 22.7 -62 41 25           ~ 3 0
82 DOBASHI 5897 DNe 12 34 09.0 -61 56 13           ~ 2 1
83 SSTGLMC G300.9071+00.8828 Y*? 12 34 13.20480 -61 55 16.2624           ~ 2 0
84 IRAS 12314-6138 IR 12 34 17.8 -61 55 13           ~ 1 0
85 NAME G305 Complex SFR 13 13 -62.7           ~ 51 0
86 SNR G309.2-00.6 SNR 13 46.5 -62 54           ~ 58 0
87 RCW 83 HII 14 08.7 -62 04           ~ 6 0
88 SDC G321.336-0.373 DNe 15 17 23.54 -57 55 57.0           ~ 4 0
89 [CPA2006] S89 bub 15 17 31.7 -57 51 03           ~ 3 0
90 RCW 95 HII 15 43.5 -53 56           ~ 9 0
91 GAL 327.30-00.60 HII 15 53 05.0 -54 35 24           ~ 122 0
92 GAL 332.80-00.60 HII 16 19 47 -51 04.1           ~ 92 1
93 GRS G339.60 -00.10 HII 16 46.6 -45 44           ~ 3 0
94 [GMB2011] 1276 ClG 23 02 00.069 +00 58 02.50           ~ 2 0
95 NAME Galactic Bulge reg ~ ~           ~ 3389 0

    Equat.    Gal    SGal    Ecl

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2020.07.08-03:15:10

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