Computer Science
Scientific paper
Jul 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978sci...201..343f&link_type=abstract
Science, vol. 201, July 28, 1978, p. 343-345.
Computer Science
18
Abundance, Deuterium Compounds, Infrared Spectra, Methane, Saturn Atmosphere, Absorption Spectra, Jupiter Atmosphere, Line Spectra, Molecular Spectra, Nuclear Fusion, Planetary Temperature, Thermal Radiation, Saturn, Deuterium, Methane, Spectrum, Radiation, Jupiter, Pressure, Atmosphere, Hydrogen, Absorptions, Abundances, Temperatures, Element Ratios
Scientific paper
The detection of CH3D in the 5-micron spectrum of Saturn, as obtained by a Fourier transform spectrometer, is reported. A CH3D abundance of 2.6 plus or minus 0.8 centimeter-amagat has been found along with a temperature of 175 plus or minus 30 K for the mean level of spectroscopic line formation. This suggests that the observed flux is due to thermal radiation from relatively deep levels within the atmosphere. This CH3D abundance indicates a deuterium/hydrogen ratio of approximately 2 x 10 to the -5th power, which is of a magnitude similar to that of Jupiter. This value is considerably lower than the terrestrial and meteoritic value of 15 x 10 to the -5th power. If stellar processing of the deuterium that formed the solar system is minimal, this ratio may be representative of the primordial ratio at the time of the formation of the universe.
Fink Uwe
Larson Harold P.
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