Fig. 9.
Gradient in [Mg/Fe] (top panel) and [Fe/H] (bottom panel) as a function of Rgc for APOGEE (circles) and GALAH (triangles) clusters. Grey symbols are clusters with less than four stars. Blue symbols are clusters with four or more stars sampled. Filled symbols are the clusters for which this is the first metallicity determination from high-resolution spectroscopy. Green and orange lines show different linear fits (see text for details). The positions of NGC 6705 and NGC 6791 are marked.
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