Radio observations of planetary nebulae and possible planetary nebulae.

Radio observations in the continuum at 2 cm were made of many objects classified by optical aetronomy techniques planetary nebulae or possible planetary nebulae. The primary purpose waS to seek out significant radio emitte among those objects called planetaries that had not yet been icoked at in the radio region. One object, K3 - 50, had been called a planetary nebula but current evidence indicates that it is likely a compact `In region. A goal of this work was to obtain statistics on what fraction of objects called nebulae are K3 - 50-type objects and to aid in discriminating planetary nebulae from compact H ii regions. Two of the objects observed (H2 - 3 and H2 - 6) appear to be similar to K3 - 50, while two other objects (M1 - 78 and A77) are found to have significant radio emission and are probably bonafide planetary nebulae. Key words: planetary nebulae - compact H n regions