SIMBAD references

2003ApJ...591L..41R - Astrophys. J., 591, L41-L44 (2003/July-1)

Enhanced deuterium fractionation in dense interstellar cores resulting from multiply deuterated H+3.


Abstract (from CDS):

In this Letter, we present the first results from updated models of interstellar deuterium chemistry that now include all possible deuterated isotopomers of H+3. We find that in regions of high density and heavy depletion, such as prestellar cores, the inclusion of HD+2and D+3 enhances the fractionation of ionic and neutral species significantly. Our models are the first to predict the very high atomic D/H ratios (≥0.3) necessary for grain-surface chemistry models to reproduce the high formaldehyde and methanol fractionation seen in star-forming regions.

Abstract Copyright:

Journal keyword(s): ISM: Clouds - ISM: Individual: Alphanumeric: L1544 - ISM: Molecules - Molecular Processes

Simbad objects: 8

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