Table 5.
Change with age of the [Fe/H] radial gradients studied through MCMC at Sect. 4.3.
| Sample | Age bin | b1 | m1 | m2 | Knee | N | Spearman |
|---|---|---|---|---|---|---|---|
| [Ga] | [dex] | [dex kpc−1] | [dex kpc−1] | [kpc] | |||
| OCCASO | 0.1–1 | 0.365 ± 0.211 | –0.032 ± 0.022 | 15 | –0.30 | ||
| OCCASO | 1–2 | 0.457 ± 0.084 | –0.079 ± 0.015 | 11 | –0.44 | ||
| OCCASO | 2–3 | 0.347 ± 0.285 | –0.054 ± 0.037 | 4 | –0.47 | ||
| OCCASO | 3–7.3 | 0.828 ± 0.553 | –0.099 ± 0.023 | 5 | –0.95 | ||
| OCCASO+ | 0.1–1 | 0.452 ± 0.062 | –0.049 ± 0.006 | 39 | –0.75 | ||
| OCCASO+ | 1–2 | 0.795 ± 0.114 | –0.09 ± 0.014 | –0.019 ± 0.018 | 10.1 ± 0.8 | 29 | –0.87 |
| OCCASO+ | 2–3 | 0.651 ± 0.275 | –0.075 ± 0.033 | –0.042 ± 0.017 | 9.6 ± 2.1 | 14 | –0.85 |
| OCCASO+ | 3–8 | 0.996 ± 0.305 | –0.113 ± 0.034 | –0.012 ± 0.018 | 10.9 ± 1.1 | 15 | –0.80 |
| Myers et al. (2022) | 0.1–1 | 0.395 ± 0.087 | –0.051 ± 0.008 | 39 | –0.72 | ||
| Myers et al. (2022) | 1–2 | 0.673 ± 0.135 | –0.08 ± 0.016 | –0.041 ± 0.01 | 10.1 ± 1.0 | 20 | –0.90 |
| Myers et al. (2022) | 2–3 | 0.687 ± 0.177 | –0.085 ± 0.017 | –0.014 ± 0.026 | 11.9 ± 0.9 | 11 | –0.77 |
| Myers et al. (2022) | 3–8 | 1.455 ± 0.329 | –0.161 ± 0.035 | –0.025 ± 0.017 | 10.8 ± 0.6 | 12 | –0.70 |
| Spina et al. (2021) | 0.1–1 | 0.558 ± 0.062 | –0.065 ± 0.006 | 57 | –0.72 | ||
| Spina et al. (2021) | 1–2 | 0.566 ± 0.187 | –0.068 ± 0.019 | –0.037 ± 0.047 | 11.5 ± 1.3 | 22 | –0.86 |
| Spina et al. (2021) | 2–3 | 0.83 ± 0.234 | –0.097 ± 0.024 | –0.019 ± 0.028 | 11.9 ± 1.1 | 10 | –0.93 |
| Spina et al. (2021) | 3–7.3 | 1.307 ± 0.295 | –0.147 ± 0.032 | –0.02 ± 0.018 | 11.1 ± 0.8 | 16 | –0.82 |
| GES23 | 0.1–1 | 0.356 ± 0.057 | –0.043 ± 0.006 | 23 | –0.82 | ||
| GES23 | 1–2 | 0.811 ± 0.152 | –0.09 ± 0.019 | –0.02 ± 0.026 | 10.8 ± 1.0 | 17 | –0.85 |
| GES23 | 3–7.3 | 1.025 ± 0.34 | –0.118 ± 0.038 | –0.014 ± 0.017 | 10.7 ± 1.1 | 12 | –0.75 |
| Gaia DR3 | 0.1–1 | 0.384 ± 0.069 | –0.043 ± 0.005 | 303 | –0.43 | ||
| Gaia DR3 | 1–2 | 0.588 ± 0.196 | –0.065 ± 0.01 | 48 | –0.55 | ||
| Gaia DR3 | 2–3 | 0.933 ± 0.392 | –0.079 ± 0.025 | 25 | –0.41 | ||
| Gaia DR3 | 3–7.3 | 0.354 ± 0.26 | –0.105 ± 0.021 | 13 | –0.54 | ||
Notes. The columns b1 and m1 are the y-intercept and slope of the first line fitted, respectively. The column m2 is the slope of the second line. The position of the knee, the number of OCs and Spearman correlation coefficient are listed in the last columns. We analyzed the OCCASO and OCCASO+ samples and reanalyzed the others. The OCCASO and Gaia DR3 samples do not have clusters beyond the knee, so only the first line is fitted. In the first bin of all the samples, we did not find the knee shape.
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