Mapping of the sodium emission associated with Io and Jupiter

Details Mapping of the sodium emission associated with Io and Jupiter Mapping of the sodium emission associated with Io and Jupiter

Mar 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976icar...27..425w&link_type=abstract

Icarus, vol. 27, Mar. 1976, p. 425-428. Research supported by the Smithsonian Research Foundation.

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11

Atmospheric Radiation, D Lines, Emission Spectra, Io, Jupiter Atmosphere, Astronomical Spectroscopy, Microdensitometers, Sodium, Spatial Distribution

Scientific paper

The sodium D-lines are observed in emission in a disklike distribution surrounding Io and extending outward in the orbital plane of the Galilean satellites to at least 23 Jupiter radii from the planet. A scale length for the sodium emission cloud in the orbital plane and the thickness of the sodium disk perpendicular to the orbital plane are determined. Weak D-line emission is also detected over the poles of Jupiter. Estimates of the apparent emission rates are derived from microdensitometer scans of the spectrograms as a function of position in the satellite orbital plane and perpendicular to the orbital plane. No other emission lines were detected down to a limit of about 50 rayleighs over the spectral range from 3500 A to 9000 A.

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