Abstract
High-resolution spectra in the H-band (1.55–1.56 μm) were obtained with the Phoenix spectrograph at the 2.1 m Kitt Peak telescope, for the observation of OH lines in 14 metal-poor stars of metallicities −0.8<[Fe/H]<−2.2. Results of [O/Fe]≈+0.43 are in agreement with oxygen-to-iron ratios derived from the forbidden [O I] lines, and in disagreement with the high [O/Fe] derived from permitted O I lines and recent determinations from UV OH lines.
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