Far-infrared brightness temperature of Saturn's disk and rings

Details Far-infrared brightness temperature of Saturn's disk and rings Far-infrared brightness temperature of Saturn's disk and rings

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982icar...49..205d&link_type=abstract

Icarus, vol. 49, Feb. 1982, p. 205-212.

Computer Science

10

Balloon-Borne Instruments, Brightness Temperature, Far Infrared Radiation, Saturn Atmosphere, Saturn Rings, Atmospheric Models, Atmospheric Temperature, Calibrating, Temperature Profiles, Saturn, Infrared, Wavelengths, Brightness Temperature, Disk, Rings, Telescopic Observations, Comparisons, Procedure, Experiments, Spectra, Data, Models, Theoretical Studies

Scientific paper

The paper presents far-infrared observations of Saturn in the wavelength band 76-116 microns, using a balloon-borne 75-cm telescope launched on December 10, 1980, from Hyderabad, India. Normalizing with respect to Jupiter, it is found that the average brightness temperature of the disk-ring system is 90 + or - 3 K. Correcting for the contribution from rings using experimental information on the brightness temperature of rings at 20 microns, the brightness temperature of the disk is found to be 96.9 + or - 3.5 K. The systematic errors and the correction for the ring contribution are small for the observations. Therefore, the estimate of the brightness temperature of the disk and earlier observations of Saturn when contribution from the rings was large are used to find that for wavelengths greater than 50 microns, there is a small reduction in the ring brightness temperature as compared to that at 20 microns.

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