A comparison of observations with main-sequence evolutionary models.
Abstract
A comparison of four-color observations, transformed to the (log g - log ) plane, with new theoretical isochrones for the composition (Y,Z = 0.2, 0.04) shows good agreement between theory and observation in the range from 0.5 to I x i0 years. Ages are derived for seven open clusters which are in accord with previous estimates. Key words: four-color photometry-open clusters- isochrones- cluster ages
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- August 1977
- DOI:
- 10.1086/130163
- Bibcode:
- 1977PASP...89..554P
- Keywords:
-
- Evolution:Galactic Clusters;
- Galactic Clusters: Ages