Aperture synthesis observations of CO emission from the W3 molecular cloud core

We present the first aperture synthesis maps of /sup 12/CO (J = 1-0) emission from a galactic star-forming region. We have mapped the line and continuum emission from a 1' field centered on W3 IRS5 with the Owens Valley millimeter-wave interferometer. Although we did not detect any radio continuum emission from IRS5 to a 5 sigma limit of 130 mJy, we have found, associated with IRS5, compact (approx. 8'') sourcces of high velocity red- and blueshifted CO emission with T/sub B/roughly-equal20 K. The estimated mass in each wing is 1 M/sub sun/, with density roughly-equal10/sup 5/ cm/sup -3/. The outflow is similar to other known sources with high-velocity emission and has a short dynamic lifetime such as found in Orion. We suggest that the two infrared sources which comprise IRS5 are in differing stages of evolution.