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OH inversions in star-forming regions and ALI radiation transfer

Published online by Cambridge University Press:  03 August 2017

Malcolm D. Gray
Malcolm D. Gray*
Affiliation:
Department of Physics, UMIST, P.O. Box 88, Manchester, M60 1QD, U.K.

Abstract

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I introduce a new model of OH maser pumping in star-forming regions, based on exact radiation transfer models of the interface between an expanding ucHII region and undisturbed molecular material. The model incorporates the most recent set of rate-coefficients for collisions of OH with molecular hydrogen, and an improved model of continuum emission from dust. FIR line overlap is incorporated into the model in a manner which avoids the inconsistencies associated with the Sobolev approximation.

Type
Part 7. Maser Theory
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 482 - 486
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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