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Detailed chemical abundances for five stars in two Galactic globularclusters, NGC 5466 and NGC 5024, are presented from high resolution optical(from the Hobby- Eberley Telescope) and infrared spectra (from the SDSS-IIIAPOGEE survey). We find [Fe/H] = -1.97 +/- 0.13 dex for NGC 5466, and [Fe/H] =-2.06 +/- 0.13 dex for NGC 5024, and the typical abundance pattern for globularclusters for the remaining elements, e.g., both show evidence for mixing intheir light element abundance ratios (C, N), and AGB contributions in theirheavy element abundances (Y, Ba, and Eu). These clusters were selected toexamine chemical trends that may correlate them with the Sgr dwarf galaxyremnant, but at these low metallicities no obvious differences from theGalactic abundance pattern are found. Regardless, we compare our results fromthe optical and infrared analyses to find that oxygen and silicon abundancesdetermined from the infrared spectral lines are in better agreement with theother alpha-element ratios and with smaller random errors.

Chemical abundances in the globular clusters NGC 5024 and NGC 5466 from optical and infrared spectroscopy