The chemistry of multiply deuterated species in cold, dense interstellar cores

Details The chemistry of multiply deuterated species in cold, dense interstellar cores The chemistry of multiply deuterated species in cold, dense interstellar cores

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...424..905r&link_type=abstract

Astronomy and Astrophysics, v.424, p.905-917 (2004)

Astronomy and Astrophysics

Astrophysics

60

Ism: Abundances, Ism: Molecules, Ism: Individual Objects: Ρ Oph D, L1544

Scientific paper

We present new models of interstellar deuterium chemistry that include more multiply deuterated species than previously considered. We first describe the updates that have been made, and compare the results given by two different underlying networks at the low temperatures and high densities characteristic of prestellar cores. We then use the models to explain recent observations of CO depletion and D2CO/H2CO ratios in prestellar cores. We find limited agreement between our models and observations for constant density scenarios, but for two of these cores we demonstrate reasonable agreement when we take the density structure of the core into account.
Tables \ref{tab:l1544} and \ref{tab:ophD} are only available in electronic form at http://www.edpsciences.org

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