Fig. 4.
Observed [α/Fe] vs. [Fe/H] abundance ratios presented by Silva Aguirre et al. (2018, grey points), compared with model results constrained only by abundance ratio data with three free parameters, composed by the set Θ = {τ1, τ2, tmax} (see Sect. 4). The blue lines correspond to 100 walkers at the last step, and the thin white line indicates the best-fit model.
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