| Issue |
A&A
Volume 416, Number 2, March III 2004
|
|
|---|---|---|
| Page(s) | 801 - 810 | |
| Section | Atomic, molecular, and nuclear data | |
| DOI | https://doi.org/10.1051/0004-6361:20034602 | |
| Published online | 27 February 2004 | |
Molecular complexes theoretical computations between methanol and carbon dioxide and their implications in the interstellar ice mantles
1
Centre d'Étude Spatiale des Rayonnements, Observatoire Midi-Pyrénées (CNRS-UPS), BP 4346, 31028 Toulouse Cedex 04, France
2
Laboratoire de Physique Quantique, Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (UPS-CNRS), 118 Route de Narbonne, 31400 Toulouse, France
3
Institut d'Astrophysique Spatiale (CNRS), Orsay, France
Corresponding author: A. Klotz, klotz@cesr.fr
Received:
21
May
2003
Accepted:
7
November
2003
Theoretical computations were carried out on the molecular complex between methanol and carbon dioxide. These calculations explain the broadening of the 15 μm spectral feature observed in interstellar ices. This feature is assigned to the bending of C–O of the carbon dioxide and we confirm that the broadening is compatible with methanol interactions of the electron donor acceptor type. Extra interactions are also investigated and can be implied in the broadening.
Key words: molecular: spectroscopy infrared
© ESO, 2004
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