The chemistry of deuterium in hot molecular cores

Details The chemistry of deuterium in hot molecular cores The chemistry of deuterium in hot molecular cores

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.280.1046r&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 280, Issue 4, pp. 1046-1054.

Astronomy and Astrophysics

Astronomy

57

Molecular Processes, Ism: Abundances, Ism: Clouds, Ism: Individual: Orion, Ism: Molecules

Scientific paper

This paper presents the results of a model of the chemistry of deuterium-bearing molecules in hot molecular cores. It is found that because hydrogen- and deuterium-bearing molecules are destroyed by the same reactions at about the same rates, the initial frationation present in ice mantles persists for over 10^4 yr. This is the case for a wide range of physical conditions, so it is safe to infer the fractionation on grain surfaces from observations of deuterated molecules in hot cores. The implications of the observed abundances of deuterium-bearing species in Orion are then discussed.

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