Impact of new collisional coefficients on the water line emission

Details Impact of new collisional coefficients on the water line emission Impact of new collisional coefficients on the water line emission

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007msl..confe.121c&link_type=abstract

"Molecules in Space and Laboratory, meeting held in Paris, France, May 14-18, 2007. Editors: J.L. Lemaire, F. Combes. ISBN: 9782

Astronomy and Astrophysics

Astrophysics

Modelling_Interactions

Scientific paper

The interpretation of water line emission from existing observations and future HIFI/Herschel data requires a detailed knowledge of collisional rate coefficients. The rotational (de)excitation of H2O by H2 molecules is one of the most relevant collisional mechanisms in the interstellar medium. Based on classical calculations of H2O-H2 rate coefficients, large velocity gradient modelling shows that these new rates have a significant impact on water emission line fluxes.

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