Photodissociation of H2 and the H/H2 transition in interstellar clouds

Details Photodissociation of H2 and the H/H2 transition in interstellar clouds Photodissociation of H2 and the H/H2 transition in interstellar clouds

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...253..525a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 253, no. 2, Jan. 1992, p. 525-536. Research supported by CNRS and British Coun

Astronomy and Astrophysics

Astrophysics

93

Gas Dissociation, Hydrogen Clouds, Molecular Clouds, Photodissociation, Ultraviolet Radiation, Interstellar Extinction, Radiative Transfer

Scientific paper

New data are presented relating to the photodissociation of H2 through absorption of ultraviolet radiation and spontaneous radiative dissociation, taking the dependence on the rotational quantum number explicitly into account. The first application of these results is to determine the structure of the atomic-to-molecular hydrogen transition zone in a static cloud in equilibrium. A comparison is made with the approximate method of radiative transfer introduced by Federman et al. (1979). The validity of the assumption of equilibrium is discussed.

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