Fig. 11
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Relative α-element abundance [α/Fe] versus iron abundance [Fe/H] for the pilot sample. Symbols are the observations as identified in the insert. The dashed lines mark the separations of the stellar populations from the APOGEE survey (Lagarde et al. 2021) for thin disk stars and thick disk high-a metal-poor (hamp) and high-α metal-rich (hamr) stars.
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