Abstract
The redshifted and blueshifted CO line wings are found to occur in two oppositely directed lobes in a number of molecular clouds associated with recent star formation. These CO lobes may have their origin in nonisotropic mass outflow from young protostellar objects embedded in the cloud. Away from the cloud's dense core, the velocity extent of the CO wings decreases with projected radial distance (R), following a R/sup -0.5/ law indicating deceleration of the stellar wind material as it encounters the surrounding molecular cloud. CO profiles with enhanced wings are found beyond the boundaries of the compact H II region-molecular cloud interface have line widths narrower than the /sup 13/CO lines and much narrower than the broad CO profiles. This suggests that carbon recombination line emission and the broad wings of CO lines arise in substantially different regimes in the cloud.
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