2008A&A...488..151B


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.05CET21:38:31

2008A&A...488..151B - Astronomy and Astrophysics, volume 488, 151-159 (2008/9-2)

The young Galactic star cluster [DBS2003] 179.

BORISSOVA J., IVANOV V.D., HANSON M.M., GEORGIEV L., MINNITI D., KURTEV R. and GEISLER D.

Abstract (from CDS):

Recent near- and mid-infrared surveys have brought evidence that the Milky Way continues to form massive clusters. We carry out a program to determine the basic physical properties of the new massive cluster candidate [DBS2003] 179. Medium-resolution K-band spectra and deep near-infrared images of [DBS2003] 179 were used to derive the spectral types of eight member stars, and to estimate the distance and reddening to the cluster. Seven of ten stars with spectra show emission lines. Comparison with template spectra indicated that they are early O-type stars. The mean radial velocity of the cluster is Vrad=-77±6km/s. Knowing the spectral types of the members and the color excesses, we determined extinction AV∼16.6 and distance modulus (m-M)0∼14.5mag (D∼7.9Kpc). The presence of early O-stars and a lack of red supergiants suggests a cluster age of 2-5Myr. The total cluster mass is approximated to 0.7x10 4M and it is not yet dynamically relaxed. The candidate [DBS2003] 179 further increases the family of the massive young clusters in the Galaxy, although it appears less massive than the prototypical starburst clusters.

Abstract Copyright:

Journal keyword(s): Galaxy: open clusters and associations: general - Galaxy: open clusters and associations: individual: [DBS2003] 179 - stars: early-type - stars: emission-line, Be

Nomenclature: Fig.2, Table 1: [BIH2008] objNN (Nos obj1-obj10).

Simbad objects: 44

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Number of rows : 44

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 13268 * 02 11 29.7002216680 +56 09 31.717631935 7.48 8.24 8.18     ON8.5IIIn 164 0
2 HD 15570 Em* 02 32 49.4205362766 +61 22 42.089023028 8.40 8.80 8.11 7.41 6.86 O4If 285 0
3 HD 15629 Y*O 02 33 20.5872248837 +61 31 18.187980136 8.23 8.85 8.42     O4.5V((fc)) 221 0
4 ACO 426 ClG 03 19 47.2 +41 30 47           ~ 2002 1
5 HD 269582 WR* 05 27 52.6620154151 -68 59 08.486272253 12.206 10.818 11.093 12.70 11.234 WN10h 96 0
6 HD 36166 V* 05 29 54.7755487007 +01 47 21.323228963 4.74 5.562 5.745     B2V 113 0
7 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2040 1
8 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1779 1
9 HD 46150 Em* 06 31 55.5205503719 +04 56 34.302522479 6.03 6.86 6.73 6.50 6.41 O5V((f))z 377 0
10 HD 46223 Y*O 06 32 09.3066083011 +04 49 24.707398183 6.73 7.50 7.28 6.95 6.79 O4V((f)) 359 0
11 * zet Pup BY* 08 03 35.04754 -40 00 11.3321 0.89 1.98 2.25 2.36 2.58 O4I(n)fp 1107 1
12 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49   11.59 10.5     ~ 294 0
13 HD 97950 Cl* 11 15 07.346 -61 15 38.52 9.64 9.83 9.03 9.69   WR 184 2
14 NGC 3603 OpC 11 15 18.6 -61 15 26           ~ 972 1
15 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 283 0
16 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 440 1
17 RCW 87 HII 15 05 19 -57 31.8           ~ 44 2
18 ACO 3627 ClG 16 14 22.5 -60 52 07           ~ 255 2
19 Cl Westerlund 1 OpC 16 47 04.00 -45 51 04.9           ~ 485 0
20 GAL 347.60+00.21 HII 17 11 30.3 -39 08 38           ~ 7 0
21 [BIH2008] obj7 * 17 11 30.480 -39 10 48.94           ~ 1 0
22 [BIH2008] obj6 Y*O 17 11 31.270 -39 10 50.10           ~ 2 0
23 [BIH2008] obj8 * 17 11 31.650 -39 10 50.46           O4/5I 2 0
24 [BIH2008] obj2 * 17 11 31.730 -39 10 44.28           O5/6V 2 0
25 [BIH2008] obj5 * 17 11 31.850 -39 10 50.77           O5/6I 2 0
26 [BIH2008] obj4 * 17 11 31.890 -39 10 47.15           Ofpe/WN9 3 0
27 [BIH2008] obj10 * 17 11 32.000 -39 10 50.89           O8V 2 0
28 [DBS2003] 179 OpC 17 11 32.0 -39 10 38           ~ 35 0
29 [BIH2008] obj3 * 17 11 32.030 -39 10 48.76           O5/6If 2 0
30 [BIH2008] obj1 * 17 11 32.140 -39 10 49.74           O5/6V 2 0
31 2MASS J17113331-3910517 * 17 11 33.32 -39 10 51.7           ~ 1 0
32 GAL 000.0+00.0 gam 17 45 39.60213 -29 00 22.0000           ~ 12014 0
33 GCIRS 34W WR* 17 45 39.73 -29 00 26.6           Ofpe/WN9 54 0
34 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 649 0
35 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 462 0
36 HD 161653 * 17 48 28.1361063365 -38 08 00.600907043 6.45 7.22 7.20 8.32   B2II 45 0
37 HD 167785 * 18 16 22.2040570402 +10 48 53.280233493   7.48 7.57     B2V 20 0
38 RSGC 1 OpC 18 37 58 -06 53.0           ~ 92 0
39 Cl Stephenson 2 OpC 18 39 20 -06 01.7           ~ 88 0
40 W 49 SFR 19 10 20 +09 07.7           ~ 521 1
41 MR 97 WR* 20 00 19.1224209318 +33 15 51.098849239 12.93 13.050 12.080     WN7h 73 0
42 HD 191639 Be* 20 11 10.0779788617 -08 50 32.442772591 5.42 6.34 6.49     B2II 73 0
43 Schulte 8C * 20 33 17.9821559015 +41 18 31.192311433 12.2 11.43 10.19     O4.5III(fc) 76 0
44 BD+49 3718 HXB 22 01 38.2020869992 +50 10 04.633112055 8.95 9.47 9.31     Be 37 0

    Equat.    Gal    SGal    Ecl

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2021.03.05-21:38:31

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