Broad-band colour evolution of star clusters
| dc.creator | Girardi, Leo | |
| dc.date | 2000-01-25 | |
| dc.date.accessioned | 2026-07-07T01:51:53Z | |
| dc.date.available | 2026-07-07T01:51:53Z | |
| dc.description | We briefly review the main features in the broad-band colour evolution of star clusters, over the complete age interval from 10^7 to 10^(10) yr. The emphasis is in the problem of age-dating distant young clusters (<2 Gyr) from their integrated colours. It is shown that U-B and B-V are less sensitive to metallicity than colours involving red pass-bands, like V-I, at least up to ages of some few Gyr. Since U-B and B-V are determined by well-understood and well-populated evolutionary stages, they are also less affected by theoretical uncertainties and by the ubiquitous effect of stochastic colour dispersion. The latter effects become important for the V-K colour. Thus, we argue that U-B and B-V are, presently, the more suitable broad-band colours for age-dating distant clusters. For other potentially useful colours like V-R and V-I, empirical tests of their evolution are still missing. | |
| dc.description | 6 pages, to appear in proc. of Strasbourg workshop "Massive Stellar Clusters", ASP Conf. Ser., eds. A. Lancon, C. Boily | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0001434 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0001434 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/445 | |
| dc.subject | Astrophysics | |
| dc.title | Broad-band colour evolution of star clusters | |
| dc.type | text |