2013A&A...549A..98C


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.25CEST01:54:10

2013A&A...549A..98C - Astronomy and Astrophysics, volume 549A, 98-98 (2013/1-1)

Massive open star clusters using the VVV survey. II. Discovery of six clusters with Wolf-Rayet stars.

CHENE A.-N., BORISSOVA J., BONATTO C., MAJAESS D.J., BAUME G., CLARKE J.R.A., KURTEV R., SCHNURR O., BOURET J.-C., CATELAN M., EMERSON J.P., FEINSTEIN C., GEISLER D., DE GRIJS R., HERVE A., IVANOV V.D., KUMAR M.S.N., LUCAS P., MAHY L., MARTINS F., MAURO F., MINNITI D. and MONI BIDIN C.

Abstract (from CDS):

The ESO Public Survey ``VISTA Variables in the Via Lactea'' (VVV) provides deep multi-epoch infrared observations for an unprecedented 562 sq. degrees of the Galactic bulge, and adjacent regions of the disk. Nearly 150 new open clusters and cluster candidates have been discovered in this survey. This is the second in a series of papers about young, massive open clusters observed using the VVV survey. We present the first study of six recently discovered clusters. These clusters contain at least one newly discovered Wolf-Rayet (WR) star. Following the methodology presented in the first paper of the series, wide-field, deep JHKs VVV observations, combined with new infrared spectroscopy, are employed to constrain fundamental parameters for a subset of clusters. We find that the six studied stellar groups are real young (2-7Myr) and massive (between 0.8 and 2.2x103M) clusters. They are highly obscured (AV∼5-24mag) and compact (1-2pc). In addition to WR stars, two of the six clusters also contain at least one red supergiant star, and one of these two clusters also contains a blue supergiant. We claim the discovery of 8 new WR stars, and 3 stars showing WR-like emission lines which could be classified WR or OIf. Preliminary analysis provides initial masses of ∼30-50M for the WR stars. Finally, we discuss the spiral structure of the Galaxy using the six new clusters as tracers, together with the previously studied VVV clusters.

Abstract Copyright:

Journal keyword(s): open clusters and associations: general - surveys - stars: massive - stars: Wolf-Rayet - infrared: stars

Nomenclature: Table 3: [CBB2013] VVV CLNNN NN N=51.

Status at CDS:  

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 - 2020
#notes
1 NAME Car Arm PoG 10 00 -60.0           ~ 376 1
2 [CBB2013] VVV CL009 1 * 11 56 00.2086563568 -63 19 00.989371278           B7-8V 1 0
3 [CBB2013] VVV CL009 2 * 11 56 02.37 -63 19 06.0           O8-9V 1 0
4 [CBB2013] VVV CL009 3 * 11 56 02.55 -63 19 05.2           B1-2V 1 0
5 VVV CL009 Cl* 11 56 03 -63 19.0           ~ 5 0
6 [CBB2013] VVV CL009 4 * 11 56 03.0217463500 -63 19 00.664717329           B0-1Ve 1 0
7 [CBB2013] VVV CL009 5 * 11 56 03.07 -63 18 54.6           O8-9V 2 0
8 [CBB2013] VVV CL009 6 WR* 11 56 03.78 -63 18 54.4           WN7/Of 2 0
9 [CBB2013] VVV CL009 7 * 11 56 03.896 -63 18 59.45           O9-B0V 1 0
10 [CBB2013] VVV CL009 8 * 11 56 04.3716669576 -63 18 54.380026492           O9-B0V 2 0
11 [CBB2013] VVV CL009 9 * 11 56 06.0447313569 -63 18 59.270857864           K1-2V 1 0
12 [CBB2013] VVV CL011 1 * 12 12 40.6068742936 -62 42 31.257515453           B3/5V 1 0
13 VVV CL011 Cl* 12 12 41 -62 42.5           ~ 4 0
14 [CBB2013] VVV CL011 2 WR* 12 12 41.13 -62 42 30.7           WN9/OIf+ 1 0
15 [CBB2013] VVV CL011 3 * 12 12 41.36 -62 42 32.2           B0-1V 1 0
16 [CBB2013] VVV CL011 4 * 12 12 41.40 -62 42 29.9           B1-2V 1 0
17 [DBS2003] 132 Cl* 13 12 18 -62 42.3           ~ 8 0
18 Cl Danks 1 OpC 13 12 27 -62 42.1           ~ 58 0
19 Cl Danks 2 OpC 13 12 55 -62 40.9           ~ 54 0
20 GRS G308.60 +00.60 HII 13 39.9 -61 45           ~ 93 0
21 [CBB2013] VVV CL036 1 * 14 09 00.518 -61 15 53.96           B0-1V 1 0
22 [CBB2013] VVV CL036 2 s*r 14 09 01.97 -61 16 02.8           M6-7I 1 0
23 [CBB2013] VVV CL036 3 * 14 09 02.37 -61 16 02.9           B0-1 1 0
24 [CBB2013] VVV CL036 4 s*b 14 09 02.75 -61 15 58.9           B2-3I 1 0
25 [CBB2013] VVV CL036 5 * 14 09 02.846 -61 15 33.45           B0-1V 1 0
26 VVV CL036 OpC 14 09 03 -61 16.0           ~ 5 0
27 [CBB2013] VVV CL036 6 * 14 09 03.28 -61 16 05.9           ~ 1 0
28 [CBB2013] VVV CL036 7 * 14 09 03.37 -61 15 44.6           O8-9V 1 0
29 [CBB2013] VVV CL036 8 * 14 09 04.2284388901 -61 16 06.614511302           O9-B0V 1 0
30 WR 60-6 WR* 14 09 04.307 -61 15 53.83           WN6 2 0
31 [CBB2013] VVV CL036 10 * 14 09 04.671 -61 16 14.06           B0-1V 1 0
32 2MASS J16302156-4812558 AB* 16 30 21.5749295750 -48 12 55.853619344           M7-8III 1 0
33 [CBB2013] VVV CL073 2 WR* 16 30 23.73 -48 13 04.9           WN9/O4-6If+ 2 0
34 [CBB2013] VVV CL073 3 * 16 30 23.9213298887 -48 13 24.712770998           B0-1 1 0
35 [CBB2013] VVV CL073 4 WR* 16 30 23.98 -48 13 05.5           WN7 2 0
36 VVV CL073 OpC 16 30 24 -48 13.1           ~ 4 0
37 2MASS J16302443-4813295 RG* 16 30 24.4288859375 -48 13 29.514657241           K1-2III 1 0
38 [CBB2013] VVV CL074 1 * 16 32 05.24 -47 49 29.1           O8-9III 2 0
39 [CBB2013] VVV CL074 2 WR* 16 32 05.27 -47 49 14.3           WC8 2 0
40 [CBB2013] VVV CL074 3 WR* 16 32 05.46 -47 49 28.1           WN8 2 0
41 [CBB2013] VVV CL074 4 * 16 32 05.47 -47 49 34.0           B0-1 1 0
42 [CBB2013] VVV CL074 5 * 16 32 05.49 -47 49 29.8           O7-8III 2 0
43 [CBB2013] VVV CL074 6 * 16 32 05.55 -47 49 33.2           O8-O9III 1 0
44 [CBB2013] VVV CL074 7 * 16 32 05.67 -47 49 30.0           O7-8III 2 0
45 [CBB2013] VVV CL074 8 RG* 16 32 05.86 -47 49 30.5           M2-3III 1 0
46 [CBB2013] VVV CL074 9 WR* 16 32 05.93 -47 49 30.9           WN7/O4-6If+ 2 0
47 VVV CL074 OpC 16 32 06 -47 49.5           ~ 5 0
48 [CBB2013] VVV CL074 10 * 16 32 06.424 -47 49 26.40           ~ 1 0
49 [CBB2013] VVV CL074 11 s*r 16 32 06.99 -47 49 21.1           M1-2I 1 0
50 Cl Westerlund 1 OpC 16 47 04.00 -45 51 04.9           ~ 459 0
51 [CBB2013] VVV CL099 1 * 17 14 24.26 -38 09 48.6           O9V 1 0
52 [CBB2013] VVV CL099 2 * 17 14 24.41 -38 09 50.8           O9-B0V 1 0
53 [CBB2013] VVV CL099 3 * 17 14 24.4973012691 -38 09 54.606599791           B1-2V 1 0
54 [CBB2013] VVV CL099 4 WR* 17 14 24.7029242832 -38 09 49.377969069           WN6+O 1 0
55 [CBB2013] VVV CL099 5 WR* 17 14 25.4128116901 -38 09 50.361272462           WN6 2 0
56 [CBB2013] VVV CL099 6 * 17 14 25.58 -38 09 56.0           B0/O9V 1 0
57 [CBB2013] VVV CL099 7 WR* 17 14 25.66 -38 09 53.7           WC8 2 0
58 VVV CL099 OpC 17 14 26 -38 09.9           ~ 4 0
59 [CBB2013] VVV CL099 8 * 17 14 26.10 -38 09 49.6           O9-B0V 1 0
60 [CBB2013] VVV CL099 9 * 17 14 26.3341765236 -38 09 43.831075550           M4-5V 1 0
61 [CBB2013] VVV CL099 10 * 17 14 26.42 -38 09 49.9           M1-2V 1 0
62 [CBB2013] VVV CL099 11 * 17 14 26.45 -38 09 53.2           M1-2V 1 0
63 [CBB2013] VVV CL099 12 * 17 14 26.68 -38 09 45.1           M4-5V 1 0
64 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11426 0
65 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 626 0
66 NAME Carina Region reg ~ ~           ~ 151 0
67 NAME Galactic Bulge reg ~ ~           ~ 3359 0

    Equat.    Gal    SGal    Ecl

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2020.05.25-01:54:10

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