Detection of Radio Emission from V1016 Cygni

THE infrared excesses found in many early-type emission line stars have been attributed to thermal reradiation from circumstellar dust, with a contribution in some cases from free-free emission by circumstellar gas¹. If such gas is optically thin at centimetre wavelengths, then some of these objects should be detectable as radio sources. Here we report the detection of radio emission from V1016 Cyg=MHα 328-116=MWC (Additional Star) 373, which is a prominent infrared object of this type^2,3.