EPJ Web of Conferences
Volume 34, 2012From Quantum Chemistry to Astrophysics: A Tribute to Pierre Valiron
|Number of page(s)||7|
|Section||Atomic and molecular physics|
|Published online||04 October 2012|
Rotational excitation of SO2 by collision with H2: a collaborative work
1 LERMA and UMR 8112 of CNRS, Observatoire de Paris-Meudon, 92195 Meudon Cedex, France
2 UJF-Grenoble 1 / CNRS-INSU, Institut de Planetologie et d’Astrophysique de Grenoble (IPAG) UMR 5274, Grenoble, F-38041, France
3 DAMIR, Instituto de Estructura de la Materia, CSIC Madrid, France
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The SO2 molecule is detected in a large variety of objects, notably cold dark clouds and star-forming regions. An accurate modeling of the observations requires a very good knowledge of the collisional excitation rates with H2 due to competition between collisional and radiative processes that excite and quench the different rotational levels of the molecule. The results of our recent collisional calculations are summarized. Pierre was associated to all steps of this collaborative work that was a key project in the Molecular Universe European FP6 network.
© Owned by the authors, published by EDP Sciences, 2012
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