JWST observations of 33 protostars show H2 winds broadening from ~20° to ~90° and warm mass-loss rates declining by 100x from Class 0 to Class I, matching MHD disk wind model predictions.
Data for NGC 1333 IRAS 2A, B1-c, L1448-mm, and IC348-MMS were taken from 2021.1.01578.S Fig
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JOYS$+$: A JWST/MIRI survey of the evolution of H$_2$ winds and jets from low-mass protostars
JWST observations of 33 protostars show H2 winds broadening from ~20° to ~90° and warm mass-loss rates declining by 100x from Class 0 to Class I, matching MHD disk wind model predictions.