Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...135..371l&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 135, no. 2, June 1984, p. 371-376.
Astronomy and Astrophysics
Astronomy
7
Hydrocyanic Acid, Millimeter Waves, Molecular Spectroscopy, Phosphines, Planetary Composition, Radio Astronomy, Saturn Atmosphere, Ammonia, Atmospheric Models, Carbon Monoxide, Saturn, Observations, Hydrogen Cyanide, Phosphine, Spectroscopy, Spectra, Calculations, Mixing, Ratios, Distribution, Abundance, Atmosphere, Photochemistry, Emissions, Physics, Chemistry, Models, Analysis
Scientific paper
A theoretical spectrum was generated for Saturn in the 0.5-14/cm (mm) range to examine the possibility of earth-based observations of HCN and PH3 on Saturn. Voyager data on the H2-H2 and H2-He continuum and absorption by NH3, PH3, HCN and CO were used in the development of an atmospheric model for Saturn. Low frequency absorption would be dominated by the NH3 inversion band while H2 would be most prominent in the high frequency region. If HCN were present at a ratio of 1 part in 2 billionths the HCN J=1, 2 and 3 lines would be detectable at mm-wavelengths, as would be the PH3 J=0 line.
Combes François
Encrenaz Th.
Lellouch Emmanuel
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