Identification of the UV nightglow from Venus

Details Identification of the UV nightglow from Venus Identification of the UV nightglow from Venus

May 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979natur.279..221f&link_type=abstract

Nature, vol. 279, May 17, 1979, p. 221, 222. NASA-supported research.

Physics

14

Nightglow, Spectral Emission, Ultraviolet Spectra, Venus Atmosphere, Spectrum Analysis, Upper Atmosphere, Ultraviolet, Emissions, Spectrometers, Venus, Observations, Spectrum, Nightside, International Ultraviolet Explorer, Airglow, Earth, Absorption Spectra, Spectrograph, Wavelengths, Oxygen

Scientific paper

Observations of atmospheric ultraviolet emission between 1350 and 2200 A from the night side of Venus, made by the International Ultraviolet Explorer (IUE), are reported. Low dispersion spectra taken by the short and long wavelength IUE spectrographs clearly show the (0,0) band of the NO delta system at 1909 A; the delta (0,1) band at 1980 A and the delta (0,2) band are indicated, while the (2,0) Cameron band of CO at 1928 A does not seem to be present. The relative band intensities appear to be the same as in earth airglow, where the excitation mechanism has been identified as radiative association of O and N atoms. The column emission rate of 0.5 kR implies a larger N to O ratio in the atmosphere of Venus than in that of the earth.

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