The Identification of a Dusty Multiarm Spiral Galaxy at $z=3.06$ with JWST and ALMA

Understand

Spiral arms serve crucial purposes in star formation and galaxy evolution.

• In this paper, we report the identification of A2744-DSG-$z3$, a dusty, multiarm spiral galaxy at $z=3.059$ using the James Webb Space Telescope (JWST) NIRISS imaging and grism spectroscopy.
• A2744-DSG-$z3$ was discovered as a gravitationally lensed sub-millimeter galaxy with ALMA.
• This is the most distant stellar spiral structure seen thus far, consistent with cosmological simulations which suggest $z\approx3$ as the epoch when spirals emerge.