A BIPOLAR OUTFLOW OF IONIZED-GAS IN K3-50A - H76-ALPHA RADIO RECOMBINATION LINE AND CONTINUUM OBSERVATIONS OF K3-50

The H II regions near K3-50 (G70.3 + 1.6) have been imaged at high ang ular resolution (approximately 1.3'') in the continuum and the recombi nation lines H76alpha and He76alpha using the Very Large Array (VLA). The helium line is detected in only the brightest component K3-50A whi le the hydrogen line is detected in three components (K3-50A, B and C1 ). K3-50A shows a pronounced velocity gradient of approximately 150 km s-1 pc-1 along its major axis (P.A. = 160-degrees); in addition a wid e range of line widths are observed, from 20 km s-1 to 65 km s-1. Kine matics from the line data and the morphology of the continuum emission suggest that the ionized material associated with K3-50A is undergoin g a high-velocity bipolar outflow.