X-ray sources in molecular clouds

Details X-ray sources in molecular clouds X-ray sources in molecular clouds

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...269..560l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 269, June 15, 1983, p. 560-567.

Astronomy and Astrophysics

Astrophysics

113

Astronomical Models, Infrared Spectra, Interstellar Gas, Molecular Clouds, X Ray Sources, Emission Spectra, Gas Ionization, H I Regions, H Ii Regions, Line Spectra

Scientific paper

Models are calculated for the structure and infrared line emission from a dense interstellar gas cloud containing a compact X ray source. For constant gas pressure models, the resulting structure consists of nested spherical shells containing, respectively, coronal gas at a temperature exceeding 1,000,000 K, an H II region with a temperature around 10,000 K, an H I region with T of about 8000 K, and finally an H2 region with T below 5000 K. Scaling laws are given for the locations of the transitions. Approximately 10 percent of the X ray luminosity absorbed in the H2 region is converted into IR emission lines that may be observable. Line ratios are predicted.

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