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We present abundances of globular clusters in the Milky Way and Fornax fromintegrated light spectra. Our goal is to evaluate the consistency of theintegrated light analysis relative to standard abundance analysis forindividual stars in those same clusters. This sample includes an updatedanalysis of 7 clusters from our previous publications and results for 5 newclusters that expand the metallicity range over which our technique has beentested. We find that the [Fe/H] measured from integrated light spectra agreesto $\sim$0.1 dex for globular clusters with metallicities as high as[Fe/H]=$-0.3$, but the abundances measured for more metal rich clusters may beunderestimated. In addition we systematically evaluate the accuracy ofabundance ratios, [X/Fe], for Na I, Mg I, Al I, Si I, Ca I, Ti I, Ti II, Sc II,V I, Cr I, Mn I, Co I, Ni I, Cu I, Y II, Zr I, Ba II, La II, Nd II, and Eu II.The elements for which the integrated light analysis gives results that aremost similar to analysis of individual stellar spectra are Fe I, Ca I, Si I, NiI, and Ba II. The elements that show the greatest differences include Mg I andZr I. Some elements show good agreement only over a limited range inmetallicity. More stellar abundance data in these clusters would enable morecomplete evaluation of the integrated light results for other importantelements.

astrophysical journal/the astrophysical journal

Globular Cluster Abundances from High-Resolution, Integrated-Light  Spectroscopy. II. Expanding the Metallicity Range for Old Clusters and  Updated Analysis Techniques