Fig. A.1.
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Relation between chemical abundances as a function of R − Rg for Galah (a-d), APOGEE (e-h), and LAMOST (i-l) cross-matched with Gaia DR2 (G3RV2). Panels a, e, and i show the [α/Fe]−[Fe/H] relation colour-coded by the mean |R − Rg| value in log scale. Panels b, f, and j show the number of stars in [α/Fe]-|R − Rg| plane. Panels c, g, and k show the number of stars in |R − Rg|−[Fe/H] plane. Finally, panels d, h, and l show the number of stars with |R − Rg|< 0.25 in [α/Fe]−[Fe/H] plane. Magenta contours in the [α/Fe]−[Fe/H] planes show the distribution of the total number of stars.
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