The sodium cloud of Io

Details The sodium cloud of Io The sodium cloud of Io

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977s%26t....54..479.&link_type=abstract

Sky and Telescope, vol. 54, Dec. 1977, p. 479, 480.

Astronomy and Astrophysics

Astronomy

Io, Planetary Atmospheres, Sodium Vapor, Astronomical Photography, Emission Spectra, Mass Transfer, Planetary Surfaces

Scientific paper

Some photographs of Io's faintly luminous cloud of sodium vapor are reproduced and discussed. The photographs show a banana-shaped cloud extending about 200,000 km along Io's orbit and curving strongly inward from that orbit; they also indicate that more of this sodium cloud precedes Io than follows it. The cloud is described as consisting of atoms driven off the surface of Io by the constant rain of high-energy particles from Jupiter's magnetosphere, through which the satellite moves. It is noted that potassium and ionized sulfur have also been detected in Io's vicinity.

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