Fig. 2

Our abundance results for α Cen A andB overlaid on the [Eu/Fe]-[Fe/H] diagram for large samples of Sun-like stars in the literature. Upper panel: data for about 570 FGK stars that have available Eu abundances in Delgado Mena et al. (2017, 2019). The [Eu/Fe] abundances are taken from Delgado Mena et al. (2017), but were shifted upwards by 0.016 dex, as recommended by Delgado Mena et al. (2019). Lower panel: same as the upper panel, but with data for the 380 FG stars that have available Eu abundances in Battistini & Bensby (2016). The typical uncertainties of the twocomparison datasets are shown in the upper right corner of the respective panel. Stars from thin- and thick-disc populations are shown as filled and open circles, respectively, while other stellar populations (i.e. halo, bulge, and uncertain thin-/thick-disc stars) are indicated as open triangles. The histograms on the x-axis and y-axis show the respective distributions of [Fe/H] and [Eu/Fe] of these FG(K) stars. The horizontal and vertical dashed lines indicate the zero-points of the diagrams (solar).
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