Observations of Oh Radio Emission Sources

Abstract

The 18-cm OH radio emission sources were studied to determine their character and their relation to other objects in our galaxy. The Haystack and Millstone antennas were usedwith a 100-channel digital autocorrelator to obtain Stokes parameter spectra of many of the brighter sources. Time variations in the OH emission from some of these sources were detected and studied and maps of the regions around OH emission sources were obtained in the continuum near 2 and 4 cm. The Haystack-Millstone spectral-line interferometer was used to check the positions of a pair of OH emission sources and to search for angular variation in the OH absorption across Cas A. Evidence for phenomenological associations between OH emission and H II regions, supernovae remnants, and infrared objects is discussed in the report and a kinematic model of the OH emission sources presented.