[La/Y] and [Ba/La] abundance ratios as a function of [La/Eu]. Circles correspond to MS and RG stars while squares are for post-AGB stars. Lines represent the dilution curves of the AGB material, which ultimately produce a material of solar composition (i.e., ratios equal to zero). Lines and symbols are color-coded according to the metallicity [Fe/H]. The small squares on the lines indicates where f_dil = 0.9. The thick black line (bottom panel) shows a 2 M_⊙, [Fe/H] = −2 model computed with a different set of neutron capture rates (see text for more details) and the red arrow shows the resulting abundance displacement.