The excitation of molecular hydrogen and its significance

Details The excitation of molecular hydrogen and its significance The excitation of molecular hydrogen and its significance

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.290..269s&link_type=abstract

In ESA, Infrared Spectroscopy in Astronomy p 269-280 (SEE N90-19084 11-89)

Astronomy and Astrophysics

Astronomy

4

Hydrogen, Infrared Spectra, Interstellar Gas, Molecular Clouds, Molecular Excitation, Emission Spectra, Hydrogen Ions, Infrared Spectroscopy, Photodecomposition, Spectrum Analysis

Scientific paper

The excitation of molecular hydrogen gas in interstellar environments is reviewed. Observations of infrared H2 emission provide information about gas densities and temperatures, shock velocities, magnetic fields, ultraviolet radiation fields, dust grain properties, interstellar extinction, and molecular formation mechanisms. Some of the recent observational and theoretical developments of interstellar infrared molecular hydrogen emission, are discussed. Emphasis is given to the H2 emission produced in photodissociation regions. Diagnostics of shock versus photodissociation region H2 emission are listed.

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