Low-resolution near-infrared SpeX spectra of 14 Cepheids recover global metallicities matching homogenized optical iron abundances with 0.09 dex scatter.
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Cepheid metallicities from low-resolution near-infrared spectra: validation against the optical reference scale
Low-resolution near-infrared SpeX spectra of 14 Cepheids recover global metallicities matching homogenized optical iron abundances with 0.09 dex scatter.