[Mg/Fe], [Sc/Fe], [V/Fe], and [Co/Fe] versus [Fe/H]. Stars with halo kinematics are classified from the [Mg/Fe]–[Fe/H] diagram as belonging to either the high-α (blue circles) or the low-α (filled red circles) population. Stars with thick-disk kinematics are labelled with black triangles. The dashed line in the [Mg/Fe]–[Fe/H] diagram indicates the separation between high-α and low-α stars adopted in Paper I.