Spectrophotometric experiment on board the Venera 11 and Venera 12 landers. III - Results of photometric measurements

Details Spectrophotometric experiment on board the Venera 11 and Venera 12 landers. III - Results of photometric measurements Spectrophotometric experiment on board the Venera 11 and Venera 12 landers. III - Results of photometric measurements

Jul 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981kosis..19..599m&link_type=abstract

Kosmicheskie Issledovaniia, vol. 19, July-Aug. 1981, p. 599-612. In Russian.

Astronomy and Astrophysics

Astronomy

2

Albedo, Astronomical Photometry, Solar Radiation, Spaceborne Astronomy, Venera Satellites, Venus Atmosphere, Atmospheric Attenuation, Atmospheric Composition, Electromagnetic Scattering, Energy Absorption, Infrared Radiation, Planetary Radiation, Spectrophotometry, Sulfur, Venera 11 Satellite, Venera 12 Satellite

Scientific paper

Scanning photometry data from the Venera 11 and Venera 12 landers are reported. Angular intensity distributions of the scattered solar radiation have been obtained for four spectral ranges (0.45-0.55, 0.56-0.68, 0.9-1.14, and 1.15-1.55 microns), which has made it possible to determine the height dependence of the differential flux. Solar energy absorption has been determined for various heights. In the spectral ranges 0.45-0.55 and 0.56-0.68 micron, the lower albedo limit has been obtained for the cloud layer. It is suggested that gaseous sulfur, with a relative content of 2 x 10 to the -8th on conversion to S2 molecules, is the most probable absorbing medium in the short-wave region of the spectrum.

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