Dusty-wind-clear JWST Super-early Galaxies

Abstract

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 λ _E = L _bol / L _E , where L _bol is the bolometric luminosity produced by star formation and possible black hole accretion, for 134 galaxies at 6.5 13 Gyr ^−1 develop powerful outflows clearing the galaxy from its dust. This result is supported by ALMA dust continuum nondetections in three super-early systems.

Keywords

• High-redshift galaxies
• Galaxy evolution
• Galaxy formation