AGE AND METALLICITY OF STAR-CLUSTERS IN THE MAGELLANIC CLOUDS

Citation
Jad. Pacheco et al., AGE AND METALLICITY OF STAR-CLUSTERS IN THE MAGELLANIC CLOUDS, Astronomy and astrophysics, 332(1), 1998, pp. 19-24
Citations number
43
Categorie Soggetti
Astronomy & Astrophysics
Journal title
ISSN journal
00046361
Volume
332
Issue
1
Year of publication
1998
Pages
19 - 24
Database
ISI
SICI code
0004-6361(1998)332:1<19:AAMOSI>2.0.ZU;2-W
Abstract
Spectral indices as defined by the Lick group (H beta, Mg-2, Fe5270, F e5335 and NaD) were measured for a sample of 14 clusters in the Magell anic Clouds. Iron and hydrogen indices, together with the integrated c olours (B-V) and (V-K) for these clusters, were used to estimate their ages and metallicities, using calibrations based on single stellar po pulation models. The resulting ages and metallicities are in agreement with ages estimated from colour-magnitude diagrams, and metallicities derived from spectroscopic analises or narrow band photometry.