The interstellar deuterium-to-hydrogen ratio - A reevaluation of Lyman absorption-line measurements

Details The interstellar deuterium-to-hydrogen ratio - A reevaluation of Lyman absorption-line measurements The interstellar deuterium-to-hydrogen ratio - A reevaluation of Lyman absorption-line measurements

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...390..213m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 390, no. 1, May 1, 1992, p. 213-218. Research supported by University of Ca

Astronomy and Astrophysics

Astrophysics

54

Absorption Spectra, Abundance, Deuterium, Hydrogen, Interstellar Matter, Lyman Spectra, Iue, Nuclear Fusion, Nuclear Reactions, Oao 3, Satellite Observation, Spectrum Analysis

Scientific paper

The D/H ratio in the local interstellar medium is evaluated based upon previously published measurements of Lyman absorption lines together with the hypothesis that the D/H ratio is constant. A unique value for the D/H ratio of 1.5 (+/- 0.2) x 10 exp -5 by number is shown to be consistent with all published determinations made with the Copernicus and the International Ultraviolet Explorer satellites. The possibility that the D/H ratio may vary substantially in the local interstellar medium is considered and found to be unnecessary.

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