Observations of the 22 April 1982 stellar occultation by Uranus and the rings

Details Observations of the 22 April 1982 stellar occultation by Uranus and the rings Observations of the 22 April 1982 stellar occultation by Uranus and the rings

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987icar...69..176m&link_type=abstract

Icarus (ISSN 0019-1035), vol. 69, Jan. 1987, p. 176-184.

Astronomy and Astrophysics

Astronomy

10

Stellar Occultation, Uranus Atmosphere, Uranus Rings, Atmospheric Temperature, Optical Thickness, Stratosphere, Temperature Profiles, Width, Uranus, Astronomy, Occultations, Rings, Earth-Based Observations, Models, Telescope Methods, Width, Ring 4, Alpha Ring, Beta Ring, Gamma Ring, Delta Ring, Epsilon Ring, Optical Properties, Depth, Stratosphere, Temperature, Pressure, Latitude, Atmosphere, Structure, Photometry, Infrared, Wavelengths, Equipment

Scientific paper

The 1.5 m telescope of Teide Observatory at Teneriffe was used to observe an occultation of the stellar object KME 14 by the Uranus ring system. The telescope was equipped with a two-channel IR flux collector, with one passband centered at 4490 A and the other near 8800 A. Data processing procedures that were used are detailed. The ring profiles were analyzed with a square-well model, which accounted for diffraction and finite source size while treating each ring as sharp-edged and uniformly translucent. An emersion lightcurve was obtained and inverted to yield a temperature profile of the upper atmosphere of Uranus, which displayed a temperature maximum (at 8 microbar) near the equator.

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