Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995stin...9611912g&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Aerosols, Astronomy, Auroral Zones, Auroras, Energy Dissipation, Haze, Hydrocarbons, Hydrogen, Saturn (Planet), Saturn Atmosphere, Ultraviolet Photography, Faint Object Camera, Hubble Space Telescope
Scientific paper
Near simultaneous observations of the Saturnian H2 north ultraviolet aurora and the polar haze were made at 153 nm and 210 nm respectively with the Faint Object Camera on board the Hubble Space Telescope. The auroral observations cover a complete rotation of the planet and, when co-added, reveal the presence of an auroral emission near 80 deg N with a peak brightness of about 150 kR of total H2 emission. The maximum optical depth of the polar haze layer is found to be located approximately 5 deg equatorward of the auroral emission zone. The haze particles are presumably formed by hydrocarbon aerosols initiated by H2+ auroral production. In this case, the observed haze optical depth requires an efficiency of aerosol formation of about 6 percent, indicating that auroral production of hydrocarbon aerosols is a viable source of high-latitude haze.
Dols Vincent
Gérard Jean-Claude
Gladstone Randall G.
Grodent Denis
Prangé Renee
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