Dusty winds clear JWST super-early galaxies

Understand

The JWST discovery of a number of super-early (redshift $z>10$), blue galaxies requires these systems to be essentially dust-free in spite of their large stellar masses.

• A possible explanation is that dust is evacuated by radiatively-driven outflows.
• We test this hypothesis by deriving the Eddington ratio $\lambda_E=L_{\rm bol}/L_{E}$, where $L_{\rm bol}$ is the bolometric luminosity produced by star-formation and possible black hole accretion, for 134 galaxies at $6.5< z <16$.
• We find a strong anti-correlation between $\lambda_E$ and dust UV optical depth, $\tau_{1500} \propto \lambda_E^{-0.63}$; also, $\lambda_E$ increases with redshift.