Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...206l.179b&link_type=abstract
Astrophysical Journal, vol. 206, June 15, 1976, pt. 2, p. L179-L183.
Astronomy and Astrophysics
Astrophysics
23
Atmospheric Models, Jupiter Atmosphere, Nebulae, Sulfur, Atmospheric Composition, Atmospheric Radiation, Electron Density (Concentration), Electron Energy, Electron Impact, Forbidden Bands, Io, Jupiter (Planet)
Scientific paper
A simple model of Jupiter's S II emission nebula is developed on the basis of a complete treatment of electron-impact excitation of sulfur ions. Forbidden line emission from S II ions excited by electron collisions in the Jovian nebula is analyzed, and existing observations are interpreted using a simple model of an S II nebula which is uniform in depth. The results show that the depth of the nebula is 300,000 to 600,000 km, the electron density is about 3160 per cu cm, the electron temperature is approximately 25,000 K, and the S II concentration is roughly 79 ions per cu cm. It is noted that these plasma conditions are quite different from those reported for the same region on the basis of Pioneer 10 data, indicating that the S II nebula is a sporadic event. Io is suggested as the source of the sulfur.
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