In this paper we complete the library of synthetic spectra for the range 7650-8750 Å, which includes the 8500-8750 Åinterval currently base-lined for the spectroscopic observations by GAIA, candidate ESA Cornerstone 5 mission. As for Paper II, the spectra are based on Kurucz's codes and line data. The explored metallicity, gravity and temperature ranges are , and K, respectively. The 698 new spectra are computed at the same resolving power of the observed spectra given in Paper I (131 standard stars mapping the MKK spectral classification system) and the 254 synthetic spectra of Paper II (characterized by K).
Castelli et al. (Thu,) studied this question.