Table C.1.
Mean [Fe/H]C for selected globular clusters with more than five stars in our sample. Comparison with [Fe/H]spec.
| NGC | [Fe/H]spec | lim(ϵ[Fe/H]C) | ⟨[Fe/H]C⟩ | err | σ[Fe/H]C | err | N |
|---|---|---|---|---|---|---|---|
| 104 | -0.72 | 0.40 | -0.54 | 0.01 | 0.18 | 0.01 | 621 |
| 104 | -0.72 | 0.15 | -0.57 | 0.01 | 0.17 | 0.01 | 343 |
| 104 | -0.72 | 0.10 | -0.62 | 0.02 | 0.13 | 0.01 | 100 |
| 6205 | -1.53 | 0.40 | -1.61 | 0.04 | 0.00 | 0.04 | 7 |
| 6205 | -1.53 | 0.15 | -1.61 | 0.04 | 0.00 | 0.04 | 6 |
| 6218 | -1.37 | 0.40 | -1.38 | 0.03 | 0.13 | 0.03 | 35 |
| 6218 | -1.37 | 0.15 | -1.37 | 0.03 | 0.12 | 0.03 | 30 |
| 6254 | -1.56 | 0.40 | -1.67 | 0.02 | 0.05 | 0.05 | 32 |
| 6254 | -1.56 | 0.15 | -1.68 | 0.03 | 0.06 | 0.04 | 25 |
| 6752 | -1.54 | 0.40 | -1.40 | 0.02 | 0.15 | 0.02 | 144 |
| 6752 | -1.54 | 0.15 | -1.45 | 0.02 | 0.13 | 0.02 | 87 |
| 6752 | -1.54 | 0.10 | -1.51 | 0.02 | 0.07 | 0.02 | 29 |
| 6809 | -1.94 | 0.40 | -1.78 | 0.04 | 0.00 | 0.10 | 22 |
| 6809 | -1.94 | 0.15 | -1.78 | 0.06 | 0.00 | 0.13 | 5 |
Notes. [Fe/H]spec is the spectroscopic iron abundance of the cluster from the 2010 version of the Harris (1996) catalogue. lim(ϵ[Fe/H]C) is the threshold in ϵ[Fe/H]C imposed on the cluster sample before computing the mean metallicity, e.g. lim(ϵ[Fe/H]C) = 0.10 means that only stars with ϵ[Fe/H]C ≤ 0.10 are considered. Mean [Fe/H]C, σ[Fe/H]C, and their respective errors are computed with the same maximum likelihood algorithm used in Mucciarelli et al. (2012). N is the dimension of the considered sample.
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