Spectroscopy of Mars from 2.04 to 2.44 micrometer during the 1993 opposition: absolute calibration and atmospheric vs mineralogic origin of narrow absorption features

Seven narrow absorption bands are found in the moderate-resolution reflectance spectra of Mars. The reflectance spectra are obtained using the UKIRT 3.8 meter telescope in the 2.04 to 2.44 micrometer region of the seven bands, five of which are produced by the CO2 and CO present in the atmosphere of Mars. The other two bands may be caused by nonatmospheric absorptions and may be due to the reflection of sun's light.