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The Deuterium Abundance in the Local Interstellar Medium

Published online by Cambridge University Press:  30 March 2016

Jeffrey L. Linsky
Jeffrey L. Linsky*
Affiliation:
Joint Institute for Laboratory Astrophysics NIST and University of ColoradoBoulder, Colorado 80309-0440USA

Abstract

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Accurate measurements of the interstellar deuterium/hydrogen ratio along different lines of sight are needed to test predictions of contemporary cosmologies. I describe our GHRS observations of the Lyman-α, 2600 Å and 2800 Å spectral regions for the spectroscopic binary system Capella, obtained with 3.57 km s resolution and high signal/noise. We are now analyzing these data to infer the column densities of H I, D I, Mg II, and Fe II along this 13 pc line of sight.

Type
Joint Discussions
Information
Highlights of Astronomy , Volume 9: Highlights of Astronomy. As presented at the XXIst General Assembly of the IAU, 1991 , 1992 , pp. 455 - 458
Copyright
Copyright © Kluwer 1992

References

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Murthy, J., Henry, R.C., Moos, H.W., Vidal-Madjar, A., Linsky, J.L., Gry, C. 1990, Ap. J. 356, 223.CrossRefGoogle Scholar