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The Emergence of Galactic Structure in the Era of JWST

The launch and commissioning of the James Webb SpaceTelescope is ushering in a new era in our understanding of our cosmicorigins. Galaxies are a fundamental building block of the universe,yet how they formed has remained enigmatic owing to our inability toobserve them at early cosmic times. In just the first eight months ofdata JWST is already revolutionizing our understanding of the earlyuniverse by allowing us to detect and resolve early galaxies atinfrared wavelengths.  In this talk, I will discuss some of theresults that have come out of our work with JWST and their impact onour understanding of the formation and evolution of galaxies. Thisincludes the discovery of candidate galaxies so old and massive theyshould not exist, the surprising shapes of HST-dark galaxies, and anew method for measuring kinematics that has revealed a monstrousspinning disk 1 billion years after the big bang. The firstspatially-resolved infrared look at distant galaxies has revealed thatour previous understanding of the emergence of galactic structure wasfaulty and requires a next-generation set of tools, which we arebuilding. I’ll conclude with a discussion of where the field is movingand the rich discovery space in this new era of extragalacticastrophysics.

Cody Hall

Erica June Nelson, University of Colorado

April 05, 2023
3:00pm - 4:00pm