Voyager observations of the interstellar medium in the 500- to 1700-Å spectral region

Details Voyager observations of the interstellar medium in the 500- to 1700-Å spectral region Voyager observations of the interstellar medium in the 500- to 1700-Å spectral region

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84..138s&link_type=abstract

Journal of Geophysical Research, Volume 84, Issue A1, p. 138-139

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Scientific paper

Observations of the interstellar medium have been obtained in the 500- to 1700-Å spectral region by the ultraviolet spectrometers installed on the Voyager spacecraft. A preliminary analysis of the least complex of the spectra obtained to date indicates measurable emission in spectral lines at 584, 1026, and 1216 Å. These emissions are identified with resonance scattering of solar radiation in transitions of helium and atomic hydrogen. The observations in the direction α 324°, δ -23° contain no measurable direct emission or scattering of stellar radiation by the interstellar medium to an upper limit of 5×10-4 R/A at 975 Å. Spectra obtained in other directions indicate measurable sources of apparent continua having relatively broad spatial extent.

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