Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233l..29c&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 233, Oct. 1, 1979, p. L29-L32.
Astronomy and Astrophysics
Astrophysics
49
Dayglow, Infrared Spectrometers, Nightglow, Oxygen Spectra, Venus Atmosphere, Fourier Transformation, High Resolution, Oxygen Atoms, Photolysis, Spectral Emission, Venera 9 Satellite, Venus, Airglow, Emissions, Earth Based Observations, Spectrometer, Dayglow, Nightglow, Oxygen, Photolysis, Atmosphere, Dynamics, Infrared, Intensity, Planets, Spectrum, Temperatures, Brightness, Reflectivity, Models, Quenching, Transport
Scientific paper
An intense airglow from O2(1 Delta) at 1.27 microns on both the light and the dark sides of Venus has been detected by using a ground-based high-resolution Fourier-transform spectrometer. Both dayglow and nightglow are roughly 1,000 times brighter than the visible O2 nightglow found by Veneras 9 and 10 in 1975. The column emission rate of O2(1 Delta) from Venus is close to the rate at which fresh O atoms are produced from photolysis of CO2 on the day side. Formation of O2(1 Delta) is thus a major step in the removal of O atoms from the atmosphere, and dynamical processes must carry these atoms to the night side fast enough to yield a maximum density near 90 km, which is almost constant over the planet.
Carleton Nathaniel P.
Connes Pierre
Noxon John F.
Traub Wesley A.
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