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FAUST. II. Discovery of a Secondary Outflow in IRAS 15398โˆ’3359: Variability in Outflow Direction during the Earliest Stage of Star Formation?

FAUST. II. Discovery of a Secondary Outflow in IRAS 15398โˆ’3359: Variability in Outflow Direction during the Earliest Stage of Star Formation?

Abstract We have observed the very low-mass Class 0 protostar IRAS 15398โˆ’3359 at scales ranging from 50 to 1800 au, as part of the Atacama Large Millimeter/Submillimeter Array Large Program FAUST. We uncover a linear feature, visible in H 2 CO, SO, and C 18 O line emission, which extends โ€ฆ