Simultaneous high and moderate spectroscopic observations of Saturn at selected locations on the disk in the 6000-6825 A region

Details Simultaneous high and moderate spectroscopic observations of Saturn at selected locations on the disk in the 6000-6825 A region Simultaneous high and moderate spectroscopic observations of Saturn at selected locations on the disk in the 6000-6825 A region

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...230..479m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 230, no. 2, April 1990, p. 479-488. Research supported by CICYT and Junta de A

Astronomy and Astrophysics

Astronomy

3

Absorption Spectra, Planetary Composition, Saturn Atmosphere, Saturn Rings, Spectroscopic Telescopes, Ammonia, Atmospheric Models, High Resolution, Hydrogen, Line Spectra, Methane, Molecular Gases, Saturn, Spectroscopy, Astronomy, Atmosphere, Spectra, Telescope Methods, Wavelengths, Earth-Based Observations, Absorption, Features, Hydrogen, Methane, Ammonia, Comparisons, Clouds, Haze, Optical Properties, Data, Enrichment, Equatorial Regions, Carbon, Depth, Models, Scattering, Procedure

Scientific paper

Moderate and high-resolution spectra have been obtained at various positions on Saturn's disk in the spectral range 6000-6825 A. The observations were carried out using the 2.2 m and 1.52 m telescopes at the Calar Alto Observatory (Spain) simultaneously. The spatial variations of the equivalent widths of the absorption features of H2, CH4, and NH3 existing in this spectral range are shown and compared with those obtained by other scientists. These results are used to constrain some typical atmospheric parameters. An inhomogeneous cloud model for the atmosphere of Saturn is used in which an extended haze overlies a dense cloud deck. The optical depth of the haze is constrainted by the observations to the value of about 13 in the equation region. The model is consistent with an enrichment of carbon in Saturn's atmosphere by a factor of two with respect to the solar value.

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