Abstract
A high-resolution (0.6 arcsec pixel −1 ), narrow-band, H 2 v=1-0 S(1) image of the high-velocity CO outflow in L1448 reveals a remarkable jet-like structure. The coincidence of this H 2 jet with the CO bipolar outflow implies a close association between the two phenomena. The H 2 jet comprises a series of knots, and three bow-shaped features equally spaced along the jet length, which we associate with the sporadic nature of this outflow. K-band imaging of the source also shows a conical reflection nebula extending towards the H 2 jet structure, whilst maps in HCO + J=3-2 and CS J=5-4 show two peaks, one towards the source of the H 2 jet and CO outflow, and the other towards the infrared source IRS 3 situated to the north of this region
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