The ultraviolet dayglow spectrum arising from emission of N2 in the Mars atmosphere is predicted. The intensities are such that a high-resolution spectrum should readily reveal the presence of N2 at the abundances suggested by the Viking experiments.
Fox, J. L.,
Constantinides, E. R.,
& Victor, G. A.
(1977). The Nitrogen Dayglow on Mars. Journal of Geophysical Research, 82 (10), 1615-1616.