INTEGRATED SPECTRAL STUDY OF REDDENED GLOBULAR-CLUSTERS AND CANDIDATES

Citation
E. Bica et al., INTEGRATED SPECTRAL STUDY OF REDDENED GLOBULAR-CLUSTERS AND CANDIDATES, Astronomy & Astrophysics. Supplement series, 131(3), 1998, pp. 483-497
Citations number
80
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
03650138
Volume
131
Issue
3
Year of publication
1998
Pages
483 - 497
Database
ISI
SICI code
0365-0138(1998)131:3<483:ISSORG>2.0.ZU;2-C
Abstract
This paper presents integrated spectra in the range 6700 - 9500 Angstr om for 20 Galactic globular clusters (and candidates) in the bulge and 5 others projected on the Galactic disk (\l\ > 30 degrees and \b\ < 5 degrees). Most of them are considerably reddened and are among those least studied in the literature. We derive reddening and metallicity f rom flux-calibrated spectra, thus providing independent information of that derived through colour-magnitude studies. For some clusters in t he sample, these parameters have been determined for the first timer a nd for others a considerable revision is given. We indicate the globul ar clusters which definitely belong to the bulge metal-rich and interm ediate metallicity families. Among the objects projected on the disk, we find that the integrated spectral properties of Lyuga 7, BH 176 and Palomar 10 are compatible with those of metal-rich globular clusters. Finally, ESO 93-SC08 is an old open cluster! and UKS 2 is an open clu ster with age approximate to 1 Gyr.