The composition and structure of the Enceladus plume

The composition and structure of the Enceladus plume

The Cassini Ultraviolet Imaging Spectrograph (UVIS) observed an occultation of the Sun by the water vapor plume at the south polar region of Saturn's moon Enceladus. The Extreme Ultraviolet (EUV) spectrum is dominated by the spectral signature of H2O gas, with a nominal line‐of‐sight column den...

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Veröffentlicht in:Geophysical research letters 2011-06, Vol.38 (11), p.n/a
Hauptverfasser: Hansen, C. J., Shemansky, D. E., Esposito, L. W., Stewart, A. I. F., Lewis, B. R., Colwell, J. E., Hendrix, A. R., West, R. A., Waite Jr, J. H., Teolis, B., Magee, B. A.
Format: Artikel
Sprache:eng
Schlagworte:
Cassini mission
Collimation
Earth sciences
Earth, ocean, space
Enceladus
Enceladus plume
Exact sciences and technology
Flux
Geochemistry
Moons
Planetology
Planets
Plumes
Polar environments
Remote sensing
Saturn
Ultraviolet
Water vapor
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Zusammenfassung:The Cassini Ultraviolet Imaging Spectrograph (UVIS) observed an occultation of the Sun by the water vapor plume at the south polar region of Saturn's moon Enceladus. The Extreme Ultraviolet (EUV) spectrum is dominated by the spectral signature of H2O gas, with a nominal line‐of‐sight column density of 0.90 ± 0.23 × 1016 cm−2 (upper limit of 1.0 × 1016 cm−2). The upper limit for N2 is 5 × 1013 cm−2, or
ISSN:0094-8276
1944-8007
DOI:10.1029/2011GL047415