Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...143..160d&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 143, no. 1, Feb. 1985, p. 160-175.
Astronomy and Astrophysics
Astrophysics
24
Infrared Spectra, Interstellar Matter, Milky Way Galaxy, Star Distribution, Temperature Distribution, Astronomical Models, Cosmic Dust, Diffuse Radiation, H Ii Regions, Infrared Radiation, Molecular Clouds, Radiant Heating, Star Clusters, Stellar Evolution
Scientific paper
Theoretical models are developed of the spectra and dust temperature distributions of giant galactic molecular clouds and OB associations. The models are based on four components: a diffuse atomic medium (protons), cold dense H II molecular clouds, extended low density (ELD) H II regions, and active molecular clouds in star formation regions. The interstellar radiation field spectrum is calculated from 0.1-10 microns to account for contributions from known types of celestial objects in regions where the stellar luminosity differs from the solar neighborhood at a 5 kpc galactocentric radius. The components are examined in terms of grain temperatures, energetics and IR spectra. Each component is found to dominate in some spectral region, although ELD H II radiation is always highest in the realm of energetics.
Jourdain de Muizon Marie
Rouan Daniel
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