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Jupiter's main auroral oval observed with HST-STIS

Kim, J.; Clarke, J. T.; Cowley, S. W. H. +2 more

An extended series of FUV images obtained on 7 days during winter 2000-2001, with fixed pointing, yielded highly accurate tracking of emisson features as Jupiter rotated. They provided newly detailed measurements of the degree of corotation of auroral emissions and their variations with changing central meridian longitude. This 2-month data set pr…

Jupiter's polar auroral emissions

Kim, J.; Clarke, J. T.; Cowley, S. W. H. +3 more

This paper reports a study of Jupiter's polar auroral emissions observed in an extended series of FUV images. They were obtained on seven days, during winter 2000-2001, with the STIS camera on board the Hubble Space Telescope. The fixed pointing yielded highly accurate and consistent tracking of emisson features as Jupiter rotated, allowing the an…

Spectral observations of transient features in the FUV Jovian polar aurora

Clarke, J. T.; Grodent, D.; Gustin, J. +2 more

Images of the Jovian FUV aurora show several morphologically and dynamically different regions. The main oval is usually fairly steady while the high-latitude emission inside the oval can vary over timescales of <1 min. We describe time and spatially resolved spectral observations of the Jovian aurora made with the Space Telescope Imaging Spect…

Io's auroral limb glow: Hubble Space Telescope FUV observations

Moos, H. W.; Strobel, D. F.; Retherford, K. D.

Observations of Io's FUV aurora were obtained using the Space Telescope Imaging Spectrograph (STIS) on several occasions between 1997 and 2000. The STIS first-order long-slit spectroscopy mode and 2″ wide slit were used to produce nearly monochromatic images of Io. These images reveal several distinct auroral features, including limb brightened em…

Hubble Space Telescope observations of sulfur ions in the Io plasma torus: New constraints on the plasma distribution

Schneider, Nicholas M.; Hendrix, Amanda R.; Herbert, Floyd +1 more

During the Io plasma torus crossings by the Galileo spacecraft in late 1999 and early 2000 we observed the dawn ansa of the torus using the Hubble Space Telescope (HST). Here we analyze 74 FUV HST/Space Telescope Imaging Spectrograph observations (1150 ≤ λ ≤ 1720 Å) of the dawn ansa of the Io plasma torus made during Galileo's C23, I24, and I27 to…