Abundance ratios for the n-capture elements Sr and Eu with literature data. As before, gray points denote disk and halo stars of Battistini & Bensby (2012, dark gray) and Battistini & Bensby 2016, light gray) for Sr, and Hansen et al. (2012, dark gray) and Koch & Edvardsson (2002, light gray) for Eu. Orange dots show the bulge component (Johnson et al. 2012), extending to the metal-poor bulge below [Fe/H] <−2 dex (Casey & Schlaufman 2015; Howes et al. 2016; Koch et al. 2016).