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We present measurements of the abundances of chromium, cobalt, and nickel in4113 red giants, including 2277 stars in globular clusters, 1820 stars in theMilky Way's dwarf satellite galaxies, and 16 field stars. We measured theabundances from mostly archival Keck/DEIMOS medium-resolution spectroscopy witha resolving power of R ~ 6500 and a wavelength range of approximately 6500-9000A. The abundances were determined by fitting spectral regions that containabsorption lines of the elements under consideration. We used estimates oftemperature, surface gravity, and metallicity that we previously determinedfrom the same spectra. We estimated systematic error by examining thedispersion of abundances within mono-metallic globular clusters. The medianuncertainties for [Cr/Fe], [Co/Fe], and [Ni/Fe] are 0.20, 0.20, and 0.13,respectively. Finally, we validated our estimations of uncertainty throughduplicate measurements, and we evaluated the accuracy and precision of ourmeasurements through comparison to high-resolution spectroscopic measurementsof the same stars.

Catalog of Chromium, Cobalt, and Nickel Abundances in Globular Clusters and Dwarf Galaxies