# Principal Component Abundance Analysis of Microlensed Bulge Dwarf and Subgiant Stars

Published in AcA, 2012

Andrews, B. H., et al. 2012, AcA, 62, 269.

PCA of elemental abundances of bulge stars revealing that the first two components are (1) correlated alpha elements and (2) correlated Na and Ni—two elements that have metallicity-dependent core-collapse supernova yields.