2001A&A...377..845A

Query : 2001A&A...377..845A

2001A&A...377..845A - Astronomy and Astrophysics, volume 377, 845-853 (2001/10-3)

Reddening and age for 13 southern Galactic open clusters determined from integrated spectra.

AHUMADA A.V., CLARIA J.J., BICA E., DUTRA C.M. and TORRES M.C.

Abstract (from CDS):

In this study we present flux-calibrated integrated spectra in the range 3800-6800Å for 13 concentrated open clusters with Galactic longitudes between 219° and 316°, nine of which have not been previously studied. Using the equivalent widths of the Balmer lines and comparing the cluster spectra with template spectra of Magellanic Clouds and Galactic star clusters with known parameters, we derive both foreground interstellar reddening values and age. For nine clusters these two parameters have been determined for the first time, while for the rest of the sample the results show good agreement with previous studies. The present analysis indicates four very young (Hogg 11, NGC 5606, vdB-RN 80 and Pismis 17), seven moderately young (ESO 429-SC13, Hogg 3, Hogg 12, Haffner 7, BH 87, NGC 2368 and Bochum 12) and two intermediate-age (Berkeley75 and NGC2635) open clusters. The derived foreground interstellar reddening values are in the range 0.00≤E(B-V)≤0.38. The age and reddening distributions of the present sample of relatively faint open clusters match those of open clusters with known parameters in a 90° sector centered at l=270°.

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Journal keyword(s): methods: observational - techniques: spectroscopic - open clusters and associations: general

Simbad objects: 37

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Number of rows : 37
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17424 0
2 L 595-22 Pe* 05 56 24.7419040752 -27 51 32.361761700   12.31 12.38     sdG 164 0
3 Cl VDB 80 OpC 06 30 57 -09 37.5           ~ 19 1
4 Cl Berkeley 75 OpC 06 49 00.5 -23 59 56           ~ 61 0
5 HD 56306 ** 07 16 06.70783 -09 16 10.9008           B7.5V+A0pSi 23 0
6 HD 56399 Y*? 07 16 29.0067432504 -09 30 27.476326296   9.85 9.86     B8/9II 7 0
7 NGC 2368 OpC 07 20 58 -10 22.7     11.8     ~ 12 0
8 V* V632 Mon AB* 07 20 58.5908900904 -10 22 44.305414716   12.59 11.17     M7III 18 0
9 ESO 428-24 OpC 07 22 56.2 -29 30 07           ~ 37 0
10 ESO 429-13 OpC 07 41 03 -30 44.1   11.3       ~ 16 0
11 NGC 2635 OpC 08 38 28.6 -34 46 37   12.06 11.2     ~ 35 0
12 NGC 2659 OpC 08 42 32.2 -44 59 56           ~ 39 0
13 ESO 167-12 Cl* 09 57 51 -54 39.3           ~ 12 0
14 Cl VDBH 87 OpC 10 04 35.5 -55 23 10           ~ 25 0
15 CD-34 6792 PM* 10 32 13.6185546336 -35 37 41.711776068   12.84 11.84     F:wl: 149 0
16 C 1055-614 OpC 10 57 23 -61 44.1   10.12 9.7     ~ 29 0
17 Cl Bochum 12 1 * 10 57 23.3280614088 -61 43 33.050202888 11.37 11.90 11.83 11.96   OB 8 0
18 NGC 3503 RNe 11 01 15.9 -59 50 39           ~ 19 1
19 Cl Pismis 17 OpC 11 01 30 -59 52.4   9.63 9.4     ~ 47 0
20 BRAN 337 HII 11 02 56.1 -59 29 16           ~ 17 0
21 GUM 34b HII 11 03.2 -59 32           ~ 6 0
22 Ass Car OB 2 As* 11 08 -60.2           ~ 82 0
23 NGC 3572 OpC 11 10 33.6 -60 17 38           ~ 90 0
24 Cl Hogg 10 OpC 11 10 39 -60 23.1           ~ 49 0
25 Cl Trumpler 18 OpC 11 11 18 -60 39.4           ~ 93 0
26 Cl Hogg 11 OpC 11 11 32 -60 22.3   8.21 8.1     ~ 33 0
27 Cl Collinder 240 OpC 11 11 40.00 -60 18 35.0   4.23 3.9     ~ 28 0
28 Cl Hogg 12 OpC 11 12 20 -60 45.3   9.10 8.8     ~ 28 1
29 NGC 3590 OpC 11 13 02.9 -60 47 24           ~ 85 0
30 Cl Hogg 15 OpC 12 43 37.4 -63 06 04           ~ 58 0
31 CD-32 9927 * 14 11 46.3227735768 -33 03 14.373268704   10.793 10.444 10.12 10.106 A4 98 0
32 NGC 5606 OpC 14 27 47 -59 37.9           ~ 102 0
33 NAME HD 135159 Group OpC 15 16 47.8 -59 39 32           ~ 24 0
34 CD-28 11464 Pe* 15 38 59.6479538952 -28 35 36.973634856   12.310 11.797 11.794   A 116 0
35 V* ST Her S* 15 50 46.6232210160 +48 28 58.850853780   9.09 7.75     M6S-M7SIII: 164 0
36 CD-38 10980 WD* 16 23 33.8380498896 -39 13 46.161043572 9.916 10.885 11.029 10.936 10.841 DA2 483 0
37 CD-30 17706 WD* 20 10 56.8486912016 -30 13 06.627142663 11.654 12.286 12.242 12.311 12.381 DA3.1 249 0

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