The 22.7 micron brightness of Saturn's rings versus declination of the sun

Details The 22.7 micron brightness of Saturn's rings versus declination of the sun The 22.7 micron brightness of Saturn's rings versus declination of the sun

Jan 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...219l..63n&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 219, Jan. 1, 1978, p. L63-L66.

Astronomy and Astrophysics

Astrophysics

4

Brightness Temperature, Infrared Radiation, Saturn Rings, Solar Position, Declination, Thermal Emission, Saturn, Rings, Brightness

Scientific paper

Equatorial scans of Saturn's rings were obtained with the KPNO 4 m telescope in 1977 March to provide ring-brightness data at 22.7 micrometers for B' = 16 deg.3. A comparison of these new results with an earlier measurement by Rieke shows that a specific intensity decrease of about 30% has occurred for the A and B rings since 1973, when B' was about 26 deg. Our results also confirm the existence of a bright infrared C ring component, which has increased in specific intensity by about 35% over the same period.

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