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arxiv 2410.18033 v1 pith:5YCTH3JY submitted 2024-10-23 astro-ph.EP astro-ph.SR

JWST/NIRSpec Reveals the Nested Morphology of Disk Winds from Young Stars

classification astro-ph.EP astro-ph.SR
keywords nestedmorphologynirspecwindsdiskdisksemissionjwst
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Radially extended disk winds could be the key to unlocking how protoplanetary disks accrete and how planets form and migrate. A distinctive characteristic is their nested morphology of velocity and chemistry. Here we report JWST/NIRSpec spectro-imaging of four young stars with edge-on disks in the Taurus star-forming region that demonstrate the ubiquity of this structure. In each source, a fast collimated jet traced by [Fe II] is nested inside a hollow cavity within wider lower-velocity H2 and, in one case, also CO ro-vibrational (v=1-0) emission. Furthermore, in one of our sources, ALMA CO(2-1) emission, paired with our NIRSpec images, reveals the nested wind structure extends further outward. This nested wind morphology strongly supports theoretical predictions for wind-driven accretion and underscores the need for theoretical work to assess the role of winds in the formation and evolution of planetary systems

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  1. Ionized gas emission in protoplanetary disks with the SKAO

    astro-ph.SR 2026-07 conditional novelty 4.0

    Synthetic SKA-Mid observations of simulated MHD and photoevaporative disk winds show that free-free emission is detectable in hours and stacked hydrogen recombination lines are spectrally resolvable in ~10 hours.