[Ca/Fe] as a proxy for the α-enhancement vs. [Fe/H] for our sample of stars (red filled circles) compared to data of the Milky Way and the dwarf local group galaxies from the literature. Shown are open grey triangles, MW stars (Venn et al. 2004; Reddy et al. 2006); black open circles, Sgr dSph main body stars (Monaco et al. 2005; Sbordone et al. 2007, 2015, and in prep.; Hansen et al. 2018; open blue squares, dSph (Venn et al. 2004; Letarte 2007); green “x” signs, Car dSph (Venn et al. 2004; Koch et al. 2008); orange open triangles, Scl dSph (Venn et al. 2004; Geisler et al. 2005). All remaining symbols are from Venn et al. (2004): open magenta diamonds, Sex dSph; brown triangles Leo dSph; yellow plus signs, Umi dSph; open cyan stars, Dra dSph.