Uranus: Ly-Alpha and h2 Survey

Details Uranus: Ly-Alpha and h2 Survey Uranus: Ly-Alpha and h2 Survey

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995hst..prop.6291t&link_type=abstract

HST Proposal ID #6291

Computer Science

Hst Proposal Id #6291 Solar System

Scientific paper

Survey Uranus' FUV spectrum at low-resolution using the solar-blind grating G140L with the GHRS. The spectra will span 1072-1645 A which includes the regions of the Lyman and Werner H2 bands to search for emissions from H2 and aeronomical species generated by ion chemistry in the intense aurora and ionosphere. A comparative study with Jupiter will be attempted. Also, obtain moderately high-resolution spectra of Uranus' Ly-alpha emission near quadrature so that the Uranian emission is Doppler shifted out of the geocoronal emission. For this, grating ECH-A will be used with the LSA to optimize the tradeoff between resolution and throughput. The Ly-alpha line profile will be obtained and interpreted in terms of ionospheric and auroral emission.

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