(a) Barium and (b) yttrium abundance as a function of iron abundance of the primary and mass of the secondary (which we assume is a WD). Median error bars are shown in gray. We note that enhanced Ba abundances are found almost exclusively in the region of M ₂ < 0.75 and [Fe/H] < −0.08 (bounded in green), with Y-enhanced stars extending to higher metallicities.