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Io's sodium emission profiles - Variations due to Io's phase and magnetic latitude

1977; IOP Publishing; Volume: 215; Linguagem: Inglês

10.1086/155433

1538-4357

Laurence M. Trafton, Jr. Macy W.,

Stellar, planetary, and galactic studies

view Abstract Citations (16) References (6) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Io's sodium emission profiles: variations due to Io's phase and magnetic latitude. Trafton, L. ; Macy, W., Jr. Abstract We present recent measurements of high-resolution sodium D2 emission line profiles of Io's atmosphere and cloud. The high-velocity skirts of these profiles are strongest when Io is on the magnetic equator where protons and heavy ions, which sputter atoms from Io's surface, are concentrated. The skirts are most prominent on the long-wavelength side of the line when Io is west of Jupiter, and they are most prominent on the short-wavelength side of the line when Io is east of Jupiter. Our observations also indicate that there is a shift in the emission peak with respect to Io which is correlated with Io's orbital phase angle. Publication: The Astrophysical Journal Pub Date: August 1977 DOI: 10.1086/155433 Bibcode: 1977ApJ...215..971T Keywords: Cloud Cover; D Lines; Io; Planetary Radiation; Sodium; Magnetic Equator; Magnetic Variations; Planetary Atmospheres; Lunar and Planetary Exploration full text sources ADS |