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Theoretical models of diffuse clouds

The Importance of Density Inhomogeneities and H2 Fluorescence

Published online by Cambridge University Press:  25 May 2016

Marco Spaans
Marco Spaans*
Affiliation:
Johns Hopkins University, 3400 N. Charles St. Baltimore, MD21218, USA

Abstract

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Two-dimensional model calculations for inhomogeneous diffuse and translucent clouds are presented which include line and continuum radiative transfer, thermal balance and chemical equilibrium. The effects of an inhomogeous density distribution on the abundances of chemical species and line maps are discussed. Additional calculations are presented for the fluorescently pumped H2 visual and infrared lines which emanate from spherical diffuse clouds. The results indicate that these lines yield sensitive probes of the ambient cloud density when combined with co-spatial HI observations.

Type
Diffuse and Translucent Clouds
Information
Symposium - International Astronomical Union , Volume 178: Molecules in Astrophysics: Probes and Processes , 1997 , pp. 431 - 438
Copyright
Copyright © Kluwer 1997 

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