Fig. 6.
Upper panel: same as Fig. 4 except that the model M1 is also constrained by means of the APOKASC stellar ages. The best-fit model parameters of the set Θ = {τ1, τ2, tmax, σ2/σ1} were computed by means of the PDFs of Fig. 5. Middle and lower panel: temporal evolution of [α/Fe] and age–metallicity relation, respectively, for the same models and data of the upper panel.
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