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Table 3
Parameters of the model atmospheres.
| Teff | log g | Vturb | Mixtures |
| K | cm/s2 | km s-1 | |
|
|
|||
| main set | |||
| 4100 | 0.50 | 2.0 | all |
| 4476 | 1.20 | 2.0 | all |
| 4892 | 2.06 | 2.0 | all |
| 5312 | 3.21 | 2.0 | all |
| 5854 | 3.78 | 2.0 | all |
| 6490 | 4.22 | 2.0 | all |
| 6131 | 4.50 | 2.0 | all |
| 4621 | 4.77 | 2.0 | all |
|
|
|||
| Vturb test | |||
| 4476 | 1.20 | 0.5 | ref. Y = 0.246, CNONa2 Y = 0.4 |
| 4476 | 1.20 | 1.0 | ref. Y = 0.246, CNONa2 Y = 0.4 |
| 4476 | 1.20 | 1.5 | ref. Y = 0.246, CNONa2 Y = 0.4 |
| 6490 | 4.22 | 0.5 | ref. Y = 0.246, CNONa2 Y = 0.4 |
| 6490 | 4.22 | 1.0 | ref. Y = 0.246, CNONa2 Y = 0.4 |
| 6490 | 4.22 | 1.5 | ref. Y = 0.246, CNONa2 Y = 0.4 |
| 4621 | 4.77 | 0.5 | ref. Y = 0.246, CNONa2 Y = 0.4 |
| 4621 | 4.77 | 1.0 | ref. Y = 0.246, CNONa2 Y = 0.4 |
| 4621 | 4.77 | 1.5 | ref. Y = 0.246, CNONa2 Y = 0.4 |
Notes. Calculations with the “main set” of parameters were employed to produce theoretical CMDs for first and second generation stars. Calculations with the “test” parameter sets were used to estimate the effect of microturbulence.
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