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A MonteCarlo model of the rotation of a big, isolated molecule in the ISM
G. Mulas 1, 2, 3
Received 10 March 1998 / Accepted 12 May 1998
In the diffuse interstellar medium a molecule experiences isolation conditions that cannot (yet?) be achieved in the laboratory. In such conditions its rotation is dominated by the interaction with the radiation field through a complex statistical equilibrium. This problem has been analyzed numerically with MonteCarlo techniques, for a simplified PAH molecule model. As a possible application, the result has been used to calculate rotational profiles of absorption bands, suitable for direct comparison with observed molecular bands profiles.
Key words: line: profiles ISM: general molecules infrared: ISM: lines and bands
Send offprint requests to: G. Mulas
Online publication: September 8, 1998