2012A&A...546A.110B


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST08:06:46

2012A&A...546A.110B - Astronomy and Astrophysics, volume 546A, 110-110 (2012/10-1)

Obscured clusters. IV. The most massive stars in [DBS2003] 179.

BORISSOVA J., GEORGIEV L., HANSON M.M., CLARKE J.R.A., KURTEV R., IVANOV V.D., PENALOZA F., HILLIER D.J. and ZSARGO J.

Abstract (from CDS):

We report new results for the massive evolved and main sequence members of the young galactic cluster DBS2003179. We determine the physical parameters and investigate the high-mass stellar content of the cluster, as well as of its close vicinity. Our analysis is based on ISAAC/VLT moderate-resolution (R≃4000) infrared spectroscopy of the brightest cluster members. We derive stellar parameters for sixteen of the stellar members, using full non-local thermodynamic equilibrium modeling of the obtained spectra. The cluster contains three late WN or WR/LBV stars (Obj4, Obj15, and Obj20:MDM32) and at least five OIf and five OV stars. According to the Hertzsprung-Russell diagram for DBS2003179, the WR stars show masses above 85M, the OIf stars are between 40 and 80M, and the main sequence O stars are >20M. There are indications of binarity for Obj4 and Obj11, and Obj3 shows a variable spectrum. The cluster is surrounded by a continuous protostar formation region most probably triggered by DBS2003179. We confirm that DBS2003179 is young massive cluster (2.5x104M) very close to the Galactic center at the distance of 7.9±0.8kpc.

Abstract Copyright:

Journal keyword(s): open clusters and associations: general - stars: Wolf-Rayet - stars: early-type -stars: winds, outflows - open clusters and associations: individual: [DBS2003]179

Nomenclature: Tables 1: [BIH2008] objNN N=10 (Nos 11-20, 16 missing)

Simbad objects: 46

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Number of rows : 46

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 HD 108 SB* 00 06 03.3885906204 +63 40 46.771682957 6.79 7.58 7.40     O4-8f?p 303 0
2 HD 5980 WR* 00 59 26.5847969465 -72 09 53.927725716   11.13 11.31   11.029 WN4+O7I: 359 1
3 HD 15570 Em* 02 32 49.4205362766 +61 22 42.089023028 8.40 8.80 8.11 7.41 6.86 O4If 282 0
4 HD 15629 Y*O 02 33 20.5872248837 +61 31 18.187980136 8.23 8.85 8.42     O4.5V((fc)) 217 0
5 GPSR 347.602+0.246 Rad 17 11 21.90 -39 07 17.6           ~ 2 0
6 IRAS 17078-3910 * 17 11 25.1771375136 -39 14 16.848559988           ~ 1 0
7 IRAS 17079-3905 HII 17 11 26.3 -39 09 38           ~ 5 0
8 MSX5C G347.5845+00.2123 IR 17 11 27.1 -39 09 19           ~ 2 0
9 GRS G347.60 +00.20 Rad 17 11.5 -39 08           ~ 3 0
10 GAL 347.60+00.21 HII 17 11 30.3 -39 08 38           ~ 7 0
11 [BIH2008] obj6 Y*O 17 11 31.270 -39 10 50.10           ~ 2 0
12 [BIH2008] obj11 * 17 11 31.33 -39 10 55.3           ~ 1 0
13 [BIH2008] obj12 * 17 11 31.55 -39 10 53.0           O4/5V 1 0
14 [BIH2008] obj8 * 17 11 31.650 -39 10 50.46           O4/5I 2 0
15 [BIH2008] obj14 * 17 11 31.67 -39 10 46.9           O5/6If 1 0
16 [BIH2008] obj17 * 17 11 31.69 -39 10 44.4           O6/7V 1 0
17 [BIH2008] obj13 * 17 11 31.71 -39 10 51.1           O4III 1 0
18 [BIH2008] obj2 * 17 11 31.730 -39 10 44.28           O5/6V 2 0
19 [BIH2008] obj15 * 17 11 31.80 -39 10 46.8           WN8-9h 1 0
20 [BIH2008] obj5 * 17 11 31.850 -39 10 50.77           O5/6I 2 0
21 [BIH2008] obj18 * 17 11 31.85 -39 10 29.6           O8/9V 1 0
22 [BIH2008] obj4 * 17 11 31.890 -39 10 47.15           Ofpe/WN9 3 0
23 [BIH2008] obj10 * 17 11 32.000 -39 10 50.89           O8V 2 0
24 [DBS2003] 179 OpC 17 11 32.0 -39 10 38           ~ 34 0
25 [BIH2008] obj19 * 17 11 32.01 -39 10 20.1           O5/6V 1 0
26 [BIH2008] obj3 * 17 11 32.030 -39 10 48.76           O5/6If 2 0
27 [BIH2008] obj1 * 17 11 32.140 -39 10 49.74           O5/6V 2 0
28 [BIH2008] obj20 WR* 17 11 33.0357696029 -39 10 40.134589955           WN8-9 2 0
29 GAL 347.6+00.2 HII 17 11 33.8 -39 08 20           ~ 21 0
30 MSX5C G347.6316+00.2131 IR 17 11 35.5 -39 07 01           ~ 2 0
31 GPA 347.63+0.20 Rad 17 11 38.5 -39 06 58           ~ 2 0
32 GPSR 347.616+0.152 Rad 17 11 47.98 -39 09 56.1           ~ 3 0
33 GPSR 347.629+0.149 Rad 17 11 50.98 -39 09 24.5           ~ 2 0
34 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11613 0
35 WR 102ad WR* 17 45 50.22 -28 49 21.9           WN8-9 22 0
36 WR 102ae WR* 17 45 50.28 -28 49 11.4           WN9h 33 0
37 WR 102ah WR* 17 45 50.43 -28 49 21.9           WN8-9h 29 0
38 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 631 0
39 WR 102bc WR* 17 45 51.48 -28 49 25.4           WN8 14 0
40 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 445 0
41 HD 167785 * 18 16 22.2040570402 +10 48 53.280233493   7.48 7.57     B2V 18 0
42 HD 191612 SB* 20 09 28.6111448914 +35 44 01.287772714 7.40 8.07 7.80     O8fpe 214 0
43 HD 191639 Be* 20 11 10.0779788617 -08 50 32.442772591 5.42 6.34 6.49     B2II 71 0
44 BD+49 3718 HXB 22 01 38.2020869992 +50 10 04.633112055 8.95 9.47 9.31     Be 34 0
45 NAME Local Group GrG ~ ~           ~ 7000 0
46 NAME Galactic Bar reg ~ ~           ~ 901 0

    Equat.    Gal    SGal    Ecl

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2020.08.09-08:06:46

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