On measuring the deuterium abundance in QSO absorption systems

Details On measuring the deuterium abundance in QSO absorption systems On measuring the deuterium abundance in QSO absorption systems

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.250..657w&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 250, June 15, 1991, p. 657-665.

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Absorption Spectra, Abundance, Deuterium, Quasars, Chemical Evolution, Computational Astrophysics, Cosmochemistry, Digital Simulation

Scientific paper

The results of numerical simulations aimed at evaluating techniques for potential measurements of the deuterium abundance in extragalactic absorption clouds are described. The calculations provide a guide to the precision with which it is hoped to measure D/H using existing observational facilities. The measurement error can be small enough to provide valuable cosmological constraints, even if the deuterium absorption cannot be seen as a separate feature in the wing of the hydrogen lines and instead is only seen as an extension in the blue wing of one or more of the hydrogen lines.

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