Ultraviolet absorbers in the Venus clouds |
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Authors: | Mikio Shimizu |
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Institution: | (1) Institute of Space and Aeronautical Science, University of Tokyo, Tokyo, Japan |
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Abstract: | Some absorption features in the ultraviolet spectrum of Venus observed by the OAO-2 cannot be interpreted in terms of H2SO4. Carbon suboxide polymer has a yellow colour and absorption at 2000 Å. Fine graphite grains have an absorption band at about 2175 Å as is well known in the case of the interstellar extinction curves. A mixture of these substances which is inevitably formed in the Venus atmosphere by photochemical reactions is the best candidate for explaining the Venus absorption features in the ultraviolet. |
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