David Flower david.flower@durham.ac.uk
Emeritus Professor
Multiply-deuterated species in prestellar cores
Flower, D.R.; Pineau des Forêts, G.; Walmsley, C.M.
Authors
G. Pineau des Forêts
C.M. Walmsley
Abstract
We have studied the ortho, para, and, in the case of D3+, meta forms of the multiply-deuterated isotopes of H3+, under physical conditions believed to be appropriate to pre-protostellar cores. As deuterons have integral nuclear spin, I = 1, Bose-Einstein statistical laws apply. Having extended the network of chemical reactions used in our previous study (Walmsley et al. \cite{walmsley04}), we have calculated the population densities of ortho- and para-D2H+ and of ortho- and meta-D3+. In the former case, comparison is made with the recent observations of para-D2H+ in the prestellar core 16293E (Vastel et al. \cite{vastel04}). Using radiative transition probabilities computed by Ramanlal & Tennyson (\cite{ramanlal04}), we have predicted the intensities of the near infrared vibrational transitions of the deuterated isotopes of H3+. Many of these transitions can be observed, in absorption, only from above the Earth's atmosphere, but some might be detectable through atmospheric windows.
Citation
Flower, D., Pineau des Forêts, G., & Walmsley, C. (2004). Multiply-deuterated species in prestellar cores. Astronomy & Astrophysics, 427(3), 887-893. https://doi.org/10.1051/0004-6361%3A20041464
Journal Article Type | Article |
---|---|
Publication Date | Dec 1, 2004 |
Deposit Date | May 29, 2008 |
Publicly Available Date | May 29, 2008 |
Journal | Astronomy and astrophysics. |
Print ISSN | 0004-6361 |
Electronic ISSN | 1432-0746 |
Publisher | EDP Sciences |
Peer Reviewed | Peer Reviewed |
Volume | 427 |
Issue | 3 |
Pages | 887-893 |
DOI | https://doi.org/10.1051/0004-6361%3A20041464 |
Keywords | Stars, Formation, Astrochemistry, ISM, Clouds. |
Public URL | https://durham-repository.worktribe.com/output/1593888 |
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Copyright Statement
Reproduced with permission from Astronomy & Astrophysics, © ESO
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