1.3 MM continuum observations of compact H II regions detected by IRAS. II

Details 1.3 MM continuum observations of compact H II regions detected by IRAS. II 1.3 MM continuum observations of compact H II regions detected by IRAS. II

Mar 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...157l...1c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 157, no. 1, March 1986, p. L1, L2.

Astronomy and Astrophysics

Astronomy

43

Astronomical Spectroscopy, Continuous Spectra, H Ii Regions, Infrared Spectra, Millimeter Waves, Spaceborne Astronomy, Infrared Astronomy Satellite, Optical Thickness, Spectral Energy Distribution, Stellar Envelopes, Stellar Evolution, Stellar Luminosity, Temperature Distribution

Scientific paper

We report on new 1.3 mm observations of 30 heavily obscured compact HII regions, which have also been detected by IRAS. From the observed energy distributions we derive IR luminosities, which imply spectral types between 04 and B1 for the embedded stars. The surrounding dust clouds have temperatures between 21 and 32 K; their optical depths at 1.3 mm range from (2-100) 10-4. The observations provide a lower limit of 1.7 for the wavelength dependence of dust opacity in the submm range.

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