Constraining r-process nucleosynthesis with multi-objective Galactic chemical evolution models

Open Access

Fig. 5

Reduced χ² values for [Eu/Fe] vs. [Fe/H] and [Zr/Fe] vs. [Fe/H]. Grey points show all computed models, while magenta points highlight the Pareto-optimal solutions for the Eu–Zr pair, corresponding to the lower-left boundary of the objective space. The zoomed plot shows the low–χ² region, where the optimal compromise between $χ_{Eu}^{2}$ $Mathematical equation: $\chi _{{\rm{Eu}}}^2$$ and $χ_{Zr}^{2}$ $Mathematical equation: $\chi _{{\rm{Zr}}}^2$$ is located (yellow star).

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