Table 1
Estimated stellar parameters from Monte Carlo simulations for the standard (A, B, C) and the more precise scenarios (AM, BM and CM) described in the text.
| Scenario | Reference age | Age | Bias | β | Y | Age (Gyr) | β | ||
|---|---|---|---|---|---|---|---|---|---|
| (Gyr) | (Gyr) | (%) | σ | σg | σ | σg | |||
| A | 0.557 | 0.535 |
−3.9 | 0.13 |
0.281 |
0.029 | 0.018 | 0.063 | 0.037 |
| B | 0.563 | 0.541 |
−3.8 | 0.13 |
0.277 |
0.023 | 0.015 | 0.034 | 0.021 |
| C | 0.639 | 0.585 |
−8.5 | 0.12 |
0.283 |
0.034 | 0.021 | 0.040 | 0.027 |
| AM | 0.557 | 0.538 ± 0.027 | −3.4 | 0.14 |
0.275 |
0.024 | 0.012 | 0.042 | 0.021 |
| BM | 0.563 | 0.544 |
−3.3 | 0.14 |
0.278 |
0.024 | 0.012 | 0.029 | 0.014 |
| CM | 0.639 | 0.592 |
−7.3 | 0.12 ± 0.02 | 0.285 |
0.024 | 0.010 | 0.026 | 0.010 |
Notes. The columns contain: the label of the system to be analysed; the reference age of the system; the estimated age with its 1σ error; the relative bias in the estimated age; the estimated overshooting parameter β with its 1σ error; the estimated initial helium abundance with its 1σ error; the two error components of σ and σg for the age; the two error components of σ and σg for the overshooting (see Sect. 3.2). The reference values of overshooting parameter and initial helium abundance are β = 0.16 and Y = 0.275.
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