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Voyager EUV and FUV Observations

Published online by Cambridge University Press:  12 April 2016

J.B. Holberg*
Lunar and Planetary Laboratory, University of Arizona


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The Voyager 1 and 2 ultraviolet spectrometers are sensitive over the wavelength range 500 to 1700 A. In the EUV, at wavelengths shortward of the Lyman limit (912 A), Voyager observations have detected emission from three out of a sample of 11 nearby hot DA white dwarfs. These observations imply very low HI column densities in the directions of the three stars detected. In the FUV, at wavelengths between 912 and 1200 A, Voyager observations of O and B stars can be used to study interstellar reddening at the shortest wavelengths and to provide useful estimates of interstellar H2 column densities.

Ultraviolet and EUV Absorption Studies
Copyright © NASA 1984


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