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.
The best fit to the warm and hot components are show as dotted and dashed lines respectively, while the solid line indicates the best overall fit
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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.