Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...229l.107m&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 229, Apr. 15, 1979, p. L107, L108.
Astronomy and Astrophysics
Astrophysics
17
Acetylene, Atmospheric Composition, Iue, Saturn Atmosphere, Absorption Spectra, Spectral Bands, Ultraviolet Spectroscopy, Saturn, Atmosphere, Ultraviolet, Spectrum, Absorption Spectra, Sun, Radiation, Wavelengths, Acetylene, Ammonia, Albedo, Jupiter, Emissions, International Ultraviolet Explorer
Scientific paper
Direct evidence for the presence of acetylene in the upper part of the Saturnian atmosphere is reported. This evidence consists of two spectra of Saturn obtained by using the low-dispersion mode of the short-wavelength spectrograph on the IUE satellite. A series of distinct absorption bands in the reflected solar radiation at 1750 A is attributed to acetylene. The reciprocal of the acetylene cross section at 1750 A is shown to imply 7 x 10 to the 17th molecules/sq cm in the reflecting layer. It is concluded that the radiation at 1750 A originates from less than 2.3 km-amagat within the atmosphere.
Clarke John T.
Moos Warren H.
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