The Highly Deuterated Chemistry of the Early Universe

Details The Highly Deuterated Chemistry of the Early Universe The Highly Deuterated Chemistry of the Early Universe

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011apj...737...44g&link_type=abstract

The Astrophysical Journal, Volume 737, Issue 1, article id. 44 (2011).

Astronomy and Astrophysics

Astronomy

1

Early Universe, Molecular Data, Molecular Processes, Nuclear Reactions, Nucleosynthesis, Abundances

Scientific paper

A comprehensive chemistry of the highly deuterated species D2, D+ 2, D2H+, and D+ 3 in the early universe is presented. Fractional abundances for each are calculated as a function of redshift z in the recombination era. The abundances of the isotopologues are found to display similar behavior. Fractionation enhances the abundances of most of the more highly deuterated species as the redshift decreases due to the closing of some reaction channels as the gas temperature cools. Rate coefficients for the majority of the reactions involving the deuterated species are uncertain resulting in a corresponding uncertainty in their predicted abundances.

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