Further studies of line emission from Io

Details Further studies of line emission from Io Further studies of line emission from Io

Aug 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975apj...200l..49b&link_type=abstract

Astrophysical Journal, vol. 200, Aug. 15, 1975, pt. 2, p. L49-L53.

Astronomy and Astrophysics

Astrophysics

20

D Lines, Emission Spectra, Io, Planetary Radiation, Jupiter (Planet), Line Shape, Sodium, Spectral Line Width

Scientific paper

A one-dimensional profile of the sodium emission near Io is presented. The maximum apparent emission rate is about 30 kR for the D2 line, and the profile falls to half-height at about 4 seconds of arc from Io. A high-resolution spectrum is analyzed for the thermal line width of the sodium atoms in the near-Io cloud. The full width at half-maximum is 68 plus or minus 13 mA, which implies a sodium kinetic temperature of 5200 plus or minus 2300 K. An upper limit of 5 kR is set for the apparent emission rate of neutral calcium at 4227 A.

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