The IRTF Spectral Library is a collection of 0.8-5.0 um mostly stellar spectra observed at a resolving power of R ~ 2000 with the medium-resolution spectrograph, SpeX, at the NASA Infrared Telescope Facility (IRTF) on Mauna Kea.
The IRTF Extended Spectral Library is a collection of 0.7-2.5 um mostly stellar spectra observed at a resolving power of R ~ 2000 with the medium-resolution spectrograph, SpeX, at the NASA Infrared Telescope Facility (IRTF) on Mauna Kea. It expands the metallicity coverage of the original IRTF Spectral Library (Rayner et al. 2009) from mainly solar metallicity to -1.7 < [Fe/H] < 0.3.
If you use the IRTF Spectral Library, please cite the appropriate references.
If you use the IRTF Extended Spectral Library, please cite Villaume et al. (2017).
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IRTF Spectral Libraries Overview
Spectral Library