A survey of microwave radiation from planetary nebulae.

Radio observations of 121 planetary nebulae have been made at wavelengths of 9.3, 4.5 and cm, using the 6-metre telescope at the Algonquin Radio Observatory. Detectable radio emission was found for approximately one half of these nebulae. Flux densities (or upper limits to flux densities) have been determined with an accuracy of the order of flux units. It is hoped that this body of data will be of use for the study of radio spectra of planetary nebulae.