Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978icar...36..119d&link_type=abstract
Icarus, vol. 36, Oct. 1978, p. 119-126.
Astronomy and Astrophysics
Astronomy
1
Diurnal Variations, Image Contrast, Infrared Radiation, Radiant Flux Density, Venus Atmosphere, Astronomical Photography, Digital Techniques, Limb Darkening, Luminous Intensity, Terminator Lines, Venus, Flux, Infrared, Diurnal Variations, Atmosphere, Terminators, Brightness, Temperatures, Spatial Resolution, Asymmetry, Earth-Based Observations
Scientific paper
Day-night contrasts in the equatorial infrared (8- to 14-micrometers) flux from Venus were observed in digital images obtained during the 1975 apparition. A systematic increase in 8- to 14-micrometers flux associated with the emergence of the atmosphere from daylight into evening was observed and is shown to exhibit significant day-to-day variability. The data also show that the daytime side of the morning terminator is warmer than the dark side, but this night-day asymmetry is systematically smaller than the day-night brightening seen in the Venus evening.
Diner David Joseph
Westphal Andrew J.
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