Clues to the Outflow Acceleration Mechanism from ALMA Observations of the L1448 Archetype Mario Tafalla OAN-IGN, Madrid, ES
Bipolar outflows represent a main ingredient of the physics of star formation. Despite years of research, no consensus exists on the mechanism of outflow acceleration. Highly collimated jets, wide-angle winds, or a combination of both have been proposed, but observations have remained inconclusive. In this contribution, I will present new ALMA observations of some of the youngest outflows known, including the archetype L1448. These observations have started to solve the outflow mystery by revealing how a jet interacts with its surrounding cloud.
Caption: Channel maps of the CO(2-1) emission from the L1448 outflow as obtained with ALMA. The velocity increases from left to right by 10 km/s per channel. The top panels represent the blue-shifted emission, while the bottom panels represent the red-shifted emission. The panels have been rotated to better match the plot.
Collaborators: J. Santiago-Garcia, IRAM, ES R. Bachiller, OAN-IGN, ES	Suggested Session: Molecular clouds