2000A&AS..141...79A


Query : 2000A&AS..141...79A

2000A&AS..141...79A - Astron. Astrophys., Suppl. Ser., 141, 79-88 (2000/January-1)

Integrated spectral properties of 7 galactic open clusters.

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

Abstract (from CDS):

This paper presents flux-calibrated integrated spectra in the range 3600-9000Å for 7 concentrated, relatively populous Galactic open clusters. We perform simultaneous estimates of age and foreground interstellar reddening by comparing the continuum distribution and line strengths of the cluster spectra with those of template cluster spectra with known parameters. For five clusters these two parameters have been determined for the first time (Ruprecht 144, BH 132, Pismis 21, Lynga 11 and BH 217), while the results here derived for the remaining two clusters (Hogg 15 and Melotte 105) show very good agreement with previous studies based mainly on colour-magnitude diagrams. We also provide metallicity estimates for six clusters from the equivalent widths of CaII triplet and TiO features. The present cluster sample improves the age resolution around solar metal content in the cluster spectral library for population synthesis. We compare the properties of the present sample with those of clusters in similar directions. Hogg 15 and Pismis 21 are among the most reddened clusters in sectors centered at l=270° and l=0°, respectively. Besides, the present results would favour an important dissolution rate of star clusters in these zones.

Abstract Copyright:

Journal keyword(s): techniques: spectroscopic - open clusters: general

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 Cl Melotte 105 OpC 11 19 41 -63 29.2   9.05 8.5     ~ 66 0
2 Cl VDBH 132 OpC 12 26 53 -64 03.5           ~ 16 0
3 Cl Hogg 15 OpC 12 43 37 -63 06.1   11.21 10.3     ~ 47 0
4 NAME HD 135159 Group OpC 15 16 48 -59 39.5           ~ 19 0
5 Cl Lynga 11 OpC 16 38 08 -46 17.7           ~ 16 0
6 Cl VDBH 217 OpC 17 16 17 -40 48.9           ~ 21 0
7 Cl Ruprecht 144 OpC 18 33 45 -11 25.5           ~ 18 0

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2021.12.09-11:25:49

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