| |
 |
| Paper: |
The status of stellar evolution models |
| Volume: |
13, The Formation and Evolution of Star Clusters |
| Page: |
183 |
| Authors: |
Vandenberg, D. A. |
| Abstract: |
Current uncertainties in opacity data, convection theory, and the treatment of the outer atmospheric layers in stellar models remain sufficiently large to have important ramifications for the T(eff) scale of computed evolutionary tracks. As a result, the matching of predicted and observed colors should not be given high weight in the determination of star cluster ages from isochrone fits to C-M diagrams. Rather, the turnoff luminosity must continue to be regarded as the prime age indicator, which then demands accurate distances. But, to obtain precise cluster ages, it is also necessary to know the chemical makeup of the member stars and to include the effects of rotation and diffusion, should these processes be important. Recent developments in these areas are recounted. |
|
|
|
|
|
