1998A&AS..127..423P


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.24CEST15:26:44

1998A&AS..127..423P - Astron. Astrophys., Suppl. Ser., 127, 423-432 (1998/February-1)

Fundamental parameters of the highly reddened young open clusters Westerlund 1 and 2.

PIATTI A.E., BICA E. and CLARIA J.J.

Abstract (from CDS):

We study the compact open clusters Westerlund1 (BH197) and Westerlund2. We present CCD integrated spectroscopy for both clusters, and CCD imaging in the V and I bands for the former one. So far, Westerlund1 is possibly the most reddened open cluster studied in detail (Av≃13.0). It has an age of 8±3Myr and a distance from the Sun of d≃1.0±0.4kpc. For Westerlund2 we derive a visual absorption AV≃5.0mag, an age of 2-3Myr, and d=5.7±0.3kpc. From luminosity and structural arguments we conclude that Westerlund1, although young and compact, it is a massive cluster, in contrast to Westerlund2.

Abstract Copyright:

Journal keyword(s): open clusters: individual: Cl Westerlund 1, Cl Westerlund 2 - open clusters: general

VizieR on-line data: <Available at CDS (J/A+AS/127/423): table>

Nomenclature: Table: Cl* Westerlund 1 PBC NNN (Nos 1-233)

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 31

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Number of rows : 31

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 NGC 253 SyG 00 47 33.134 -25 17 19.68   8.03   6.94 8.1 ~ 2956 2
2 NGC 457 OpC 01 19 35 +58 17.2   6.97 6.4     ~ 217 2
3 NGC 884 OpC 02 22 23 +57 07.5           ~ 448 0
4 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49   11.59 10.5     ~ 287 0
5 GUM 29 HII 10 24 14.6 -57 46 58           ~ 192 0
6 HD 97950 Cl* 11 15 07.346 -61 15 38.52 9.64 9.83 9.03 9.69   WR 184 2
7 NGC 3603 OpC 11 15 18.6 -61 15 26           ~ 958 1
8 LAWD 37 WD* 11 45 42.9170659451 -64 50 29.464090822 11.08 11.725 11.513 11.34 11.163 DQ 233 0
9 NGC 4755 OpC 12 53 39 -60 21.7           ~ 268 0
10 SA 107- reg 15 39.2 -00 20           ~ 89 0
11 NGC 6067 OpC 16 13 11 -54 13.1           ~ 173 0
12 CD-38 10980 WD* 16 23 33.8384178546 -39 13 46.160032569 9.916 10.885 11.029 10.936 10.841 DA2 440 0
13 SA 108- reg 16 32 08 +00 22.1           ~ 7 0
14 Cl* Westerlund 1 BKS H * 16 47 01.4273629136 -45 50 37.260634424   18.781 14.47     F3Ia+ 24 0
15 Hen 3-1250 Em* 16 47 03.6265799796 -45 50 14.357624931   20.0 15.972     B5Ia+ 23 0
16 Cl* Westerlund 1 BKS F s*y 16 47 03.6836562279 -45 50 43.530430986     15.05     F5Ia+ 19 0
17 Cl* Westerlund 1 W 31 s*b 16 47 03.7850215117 -45 50 40.370909455           B0I+OB 7 0
18 Cl Westerlund 1 OpC 16 47 04.00 -45 51 04.9           ~ 479 0
19 Cl* Westerlund 1 W 33 * 16 47 04.1266525740 -45 50 48.475675980   20.090 15.61 12.803   B5Ia+ 20 0
20 Cl* Westerlund 1 W 9 WR* 16 47 04.1422943113 -45 50 31.307461802   21.8 17.47 14.47 11.74 Be 46 0
21 Cl* Westerlund 1 W 8 * 16 47 04.81 -45 50 25.2   19.9 15.913     F8Ia+ 15 0
22 Cl* Westerlund 1 BKS AS * 16 47 05.4063692757 -45 50 36.608299661   22.1 16.79     M5-6Ia 29 0
23 Cl* Westerlund 1 W 16 * 16 47 06.6152064188 -45 50 42.171179650   20.5 16.248     A5Ia+ 23 0
24 HD 160233 * 17 38 40.6359300699 +04 20 09.782717660 8.2 9.00 9.04     B1II 41 0
25 CD-44 12736 PM* 18 36 25.9487430436 -44 18 36.919462094   10.83 10.22     G0 196 0
26 NGC 6705 OpC 18 51 05 -06 16.2   6.32 5.8     ~ 359 0
27 SA 112- reg 20 42 07 +00 31.4           ~ 19 0
28 Cl* Westerlund 1 PBC 183 * ~ ~           ~ 1 0
29 Cl* Westerlund 1 PBC 167 * ~ ~           ~ 1 0
30 Cl* Westerlund 1 PBC 188 * ~ ~           ~ 1 0
31 Cl* Westerlund 1 PBC 203 * ~ ~           ~ 1 0

    Equat.    Gal    SGal    Ecl

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