Molecular outflows and star formation in the HL Tau stellar group

¹²CO(2-1) and ¹³CO(2-1) observations of the HL Tau/HH 30 region are presented. These observations have high sensitivity and spatial resolution, and allow a large scale study of the kinematics of the gas in this complex stellar group. The main result is that HL Tau drives a powerful extended molecular outflow that has probably blown out of its parental core on its blueward side. The red part of the flow is currently pushing its way into the …