Radio continuum measurements of compact H II regions and other sources.
Abstract
Results are reported for measurements of the flux densities of 33 sources at wavelengths of 13, 4, and 2 cm, which were conducted using the NASA/JPL Deep Space Network 64-m antenna at Goldstone, Calif. Besides compact H II regions, the sources included five Uhuru X-ray sources, several IR sources, an extragalactic radio source, and a H2O maser. The Lyman continuum flux is derived from the measured radio flux and the assumed distance and temperature for 10 possible H II regions; the spectra of previously known sources are extended to higher frequencies, and upper limits are placed on the flux densities for the five X-ray sources. New compact H II regions are found in the bright nebula M78, the nebula K5, and the Ophiuchus dark cloud/IR region.
- Publication:
-
The Astronomical Journal
- Pub Date:
- March 1976
- DOI:
- Bibcode:
- 1976AJ.....81..172M
- Keywords:
-
- Deep Space Network;
- Extragalactic Radio Sources;
- H Ii Regions;
- Radiant Flux Density;
- X Ray Sources;
- Astronomical Spectroscopy;
- Continuous Spectra;
- Hydrogen Ions;
- Infrared Radiation;
- Interstellar Masers;
- Lyman Spectra;
- Water Vapor;
- Astrophysics