James Webb Space Telescope Feed Post

Arxiv: JWST/NIRSpec Reveals the Nested Morphology of Disk Winds from Young Stars Published: 10/23/2024 8:03:41 PM Updated: 10/23/2024 8:03:41 PM

Paper abstract: Radially extended disk winds could be the key to unlocking how protoplanetarydisks accrete and how planets form and migrate. A distinctive characteristic istheir nested morphology of velocity and chemistry. Here we report JWST/NIRSpecspectro-imaging of four young stars with edge-on disks in the Taurusstar-forming region that demonstrate the ubiquity of this structure. In eachsource, a fast collimated jet traced by [Fe II] is nested inside a hollowcavity 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 extendsfurther outward. This nested wind morphology strongly supports theoreticalpredictions for wind-driven accretion and underscores the need for theoreticalwork to assess the role of winds in the formation and evolution of planetarysystems