Sandro Tacchella First Insights from JWST: Star Formation in Cosmic-Dawn Galaxies

First Insights from JWST: Star Formation in Cosmic-Dawn Galaxies
September 12, 2023
1:30 PM - 2:30 PM
Abstract: After successful deployment and commissioning, JWST has now been delivering data for over a year. I will give an overview of the first-year surprises and discoveries, zooming in on some of the earliest galaxies and presenting new results on the spatially resolved growth histories of high-redshift galaxies. Specifically, I will discuss the structural and stellar population properties of the galaxies at the redshift frontier, with redshifts z 10. I will then connect the mode of star formation with the early enrichment of galaxies: for galaxies where we have constraints on the gas-phase metallicity (at redshift of z=8), I will show how star-bursting galaxies can have different gas-phase metallicities due to internal and external mechanisms that drive the starburst. Finally, I will focus on the structural evolution of galaxies, presenting how dense stellar cores form within galaxies at z 7. I will wrap up by highlighting what JWST will be able to deliver regarding high-redshift galaxy evolution in the upcoming years.
Speaker Information
Sandro Tacchella
University of Cambridge