Events Daily

Today, Tuesday, May 5, 2026
      

The First Galaxies and Black Holes: Surprises from JWST
Bingjie Wang, Princeton University
Event Type: Astro Seminar
Time: 2:00 PM - 3:15 PM
Location: 726 Broadway, 940, CCPP Seminar
Abstract: The James Webb Space Telescope (JWST) is transforming our understanding on galaxy formation and evolution, revealing distant galaxies deep into the epoch of reionization and red sources that were simply unknown previously. In this talk, I will begin with one of JWST's first deep fields, the A2744 cluster field, targeted as part of the UNCOVER survey. This rich, public dataset, reveals stellar populations across 0.2 < z < 13, and helps to lead to the discovery of some of the most distant galaxies known to date. I will then turn to a new population of compact red sources, known as ''little red dots'', and present the key observational and modeling steps that have shaped our understanding of their nature, from massive galaxies, to dusty supermassive black holes, and now to the emerging picture of gas-enshrouded black holes. I will highlight the recent discovery of water absorption in LRDs from high signal-to-noise JWST spectra, which establishes a new diagnostic of the physical state of the emitting gas.

Link to the Event Video