Gas-Phase Formation of Doubly-Deuterated Species

H. Roberts, TJ Millar

Research output: Contribution to journalArticle

69 Citations (Scopus)

Abstract

We present the first results from a time-dependent chemical model to include a gas-phase reaction scheme for producing doubly-deuterated species. Under normal conditions the formation of these species is inefficient. However, when the effects of the freeze out of gas phase species onto grains is included in the chemistry we find that the fractionation of both singly and doubly deuterated species is enhanced. We compare the predictions from our models with recent observations of deuterated molecules in L134N and find that, contrary to previous expectations, we can reproduce the observed levels of fractionation without recourse to an active grain-surface chemistry.
Original languageEnglish
Pages (from-to)780-784
Number of pages5
JournalAstronomy and Astrophysics
Volume364
Issue number2
Publication statusPublished - 02 Dec 2000

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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