Linear polarization of 22-GHz water-vapour line emission in southern sources.
Abstract
The Parkes 64-m reflector was used to observe 16 linearly polarized 22-GHz southern hemisphere emission sources (out of a total of 53 objects surveyed) during April and August 1976. Attention is given to the detection of water vapor in the 16 sources, and it is noted that the polarized features in L2 Puppis and VY Canis Majoris represent the first stellar sources in which water vapor has been positively identified. A distinction is made between water vapor sources and 18-cm linearly polarized OH sources, in that the former exhibit a constant plane of polarization.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- July 1978
- DOI:
- 10.1093/mnras/184.1.107
- Bibcode:
- 1978MNRAS.184..107K
- Keywords:
-
- Emission Spectra;
- Linear Polarization;
- Microwave Emission;
- Radio Sources (Astronomy);
- Water Vapor;
- Graphs (Charts);
- Hydrogen Ions;
- Hydroxyl Emission;
- Line Spectra;
- Microwave Spectra;
- Radial Velocity;
- Southern Hemisphere;
- Water Masers;
- Astrophysics;
- Interstellar Matter:Water;
- Polarization:Radio Sources;
- Radio Sources:Water Vapor