Table 8
Age and parameters from the best fitting model from a 1 000 000-step Bayesian age fitting method, for model grids with different mixing lengths and helium abundances.
| α ml | ΔY | τ best | τ mean | σ τ mean | M 1 | M 2 | [ Fe/H ] i | T 1 | T 2 | ρ 1 | ρ 2 | χ 2 |
| (Gyr) | (Gyr) | (Gyr) | (M⊙) | (M⊙) | (K) | (K) | (ρ⊙) | (ρ⊙) | ||||
|
|
||||||||||||
| 1.22 | 0.00 | 3.47 | 3.58 | 0.14 | 1.1963 | 1.2467 | −0.44 | 6567 | 5685 | 0.1873 | 0.0499 | 32.8 |
| 1.36 | 0.00 | 3.60 | 3.59 | 0.06 | 1.1948 | 1.2456 | −0.39 | 6484 | 5459 | 0.1807 | 0.0504 | 21.7 |
| 1.50 | 0.00 | 5.03 | 5.03 | 0.25 | 1.1956 | 1.2460 | 0.03 | 5934 | 4804 | 0.1862 | 0.0507 | 16.4 |
| 1.78 | 0.00 | 4.39 | 4.34 | 0.20 | 1.1974 | 1.2472 | −0.14 | 6257 | 5100 | 0.1937 | 0.0506 | 2.4 |
| 2.04 | 0.00 | 4.02 | 4.03 | 0.15 | 1.1988 | 1.2481 | −0.25 | 6476 | 5223 | 0.2001 | 0.0504 | 6.5 |
| 2.32 | 0.00 | 3.77 | 3.79 | 0.10 | 1.2002 | 1.2491 | −0.34 | 6658 | 5514 | 0.2053 | 0.0503 | 20.0 |
|
|
||||||||||||
| 1.78 | −0.05 | 4.95 | 4.92 | 0.12 | 1.2025 | 1.2506 | −0.40 | 6373 | 5208 | 0.2137 | 0.0502 | 41.0 |
| 1.78 | −0.04 | 4.71 | 4.70 | 0.11 | 1.2010 | 1.2494 | −0.39 | 6394 | 5219 | 0.2094 | 0.0503 | 28.5 |
| 1.78 | −0.03 | 4.52 | 4.56 | 0.17 | 1.1997 | 1.2484 | −0.36 | 6397 | 5208 | 0.2062 | 0.0504 | 20.0 |
| 1.78 | −0.02 | 4.63 | 4.63 | 0.18 | 1.1997 | 1.2489 | −0.23 | 6292 | 5129 | 0.2023 | 0.0505 | 9.1 |
| 1.78 | −0.01 | 4.47 | 4.45 | 0.20 | 1.1983 | 1.2478 | −0.20 | 6288 | 5124 | 0.1977 | 0.0505 | 4.1 |
| 1.78 | 0.00 | 4.39 | 4.34 | 0.20 | 1.1974 | 1.2472 | −0.14 | 6257 | 5100 | 0.1937 | 0.0506 | 2.4 |
| 1.78 | 0.01 | 4.34 | 4.31 | 0.17 | 1.1970 | 1.2469 | −0.07 | 6221 | 5071 | 0.1918 | 0.0506 | 3.2 |
| 1.78 | 0.02 | 4.27 | 4.26 | 0.17 | 1.1967 | 1.2468 | −0.01 | 6194 | 5048 | 0.1905 | 0.0506 | 5.2 |
| 1.78 | 0.03 | 4.17 | 4.16 | 0.14 | 1.1964 | 1.2466 | 0.05 | 6178 | 5032 | 0.1892 | 0.0506 | 8.2 |
| 1.78 | 0.04 | 4.06 | 4.04 | 0.14 | 1.1962 | 1.2465 | 0.10 | 6165 | 5019 | 0.1884 | 0.0507 | 11.7 |
| 1.78 | 0.05 | 3.91 | 3.90 | 0.13 | 1.1963 | 1.2467 | 0.15 | 6165 | 5015 | 0.1876 | 0.0507 | 15.5 |
Notes. The mean and standard deviation of the resulting age distribution for each model grid is also shown.
There is a noticeable difference between the mean and best-fit ages for this model grid, as this model grid produced a bimodal distribution and as such the age distribution does not match a Gaussian profile (see Fig. 7).
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