Models for IRAS observations of compact galactic H II regions

Details Models for IRAS observations of compact galactic H II regions Models for IRAS observations of compact galactic H II regions

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.221..923c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 221, Aug. 15, 1986, p. 923-929.

Astronomy and Astrophysics

Astronomy

27

H Ii Regions, Infrared Astronomy Satellite, Nebulae, Colorimetry, Cosmic Dust, Radiative Transfer, Stellar Envelopes

Scientific paper

IRAS observations of compact H II regions are compared with the predictions of models consisting of a single hot star, embedded centrally in a spherically symmetric dust cloud. The models are calculated from a program which solves the equation of radiative transfer in spherically symmetric dust clouds, including the effects of scattering. A selection criterion is derived to discriminate in favour of the sources most likely to satisfy the spherical symmetry assumption of the model. Dirty silicate-grain models with a uniform density distribution and r1/r2 in the range 0.0001 to 0.001, where r1 and r2 are the inner and outer radii of the cloud, given an excellent fit to the IRAS observations.

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