Millimeter observations of galactic sources.
Abstract
Observations at wavelengths close to 1 mm of 53 Galactic source positions, including most of the available strong CO sources and infrared sources associated with compact H II regions, are described. Strip maps across W49 and W51, and a complete map of Orion, are presented, the latter suggesting a strong correlation between far-infrared radiation from dust and molecular line emission. Spectra of some of the sources are shown. A composite spectrum suggests similar dust cloud properties in the various sources. Comparison of the present fluxes and upper limits with CO excitation temperatures enables the 1-mm optical depths to be estimated.
- Publication:
-
The Astronomical Journal
- Pub Date:
- June 1976
- DOI:
- 10.1086/111899
- Bibcode:
- 1976AJ.....81..399C
- Keywords:
-
- Carbon Monoxide;
- Galactic Radio Waves;
- Infrared Astronomy;
- Millimeter Waves;
- Radio Astronomy;
- Astronomical Spectroscopy;
- Cosmic Dust;
- Emission Spectra;
- H Ii Regions;
- Molecular Spectra;
- Orion Constellation;
- Radiant Flux Density;
- Supernova Remnants;
- Tables (Data);
- Astronomy