H AND HE BURNING PHASES IN GALACTIC CLUSTERS - THE ROLE OF THE ORIGINAL CHEMICAL-COMPOSITION

Authors
CASSISI S CASTELLANI V STRANIERO O
Citation
S. Cassisi et al., H AND HE BURNING PHASES IN GALACTIC CLUSTERS - THE ROLE OF THE ORIGINAL CHEMICAL-COMPOSITION, Astronomy and astrophysics, 282(3), 1994, pp. 753-759
Citations number
14
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy and astrophysics → ACNP
ISSN journal
00046361
Volume
282
Issue
3
Year of publication
1994
Pages
753 - 759
Database
ISI
SICI code
0004-6361(1994)282:3<753:HAHBPI>2.0.ZU;2-N
Abstract
We present cluster isochrones for selected assumptions about the clust er metallicity and original He content, covering the range of ages bet ween 40 and 5000 Myr. We show that moderate variations in the star met allicity or in their original He abundance do not affect sensitively t he expected C-M diagrams. Evolutionary parameters constraining the clu ster age or the cluster distance modulus are finally discussed.