In this series of posts, we sit down with a few of the keynote speakers of the 235th AAS meeting to learn more about them and their research. You can see a full schedule of their talks here, and read our other interviews here!
Good Things Come in Small Galaxies
Prof. Dan Weisz from UC Berkeley
When you think of observational cosmology, you might think of studying objects far away: measuring the polarization of the cosmic microwave background, or measuring the Hubble constant using extragalactic gravitational lenses. But Prof. Dan Weisz manages to do cosmological studies with objects much, much closer to home.Weisz, an astronomy professor at the University of California Berkeley, uses nearby dwarf galaxies to do “near-field” cosmology. “We can learn a lot about the early universe from these very small systems,” he explains. “A lot of times we separate nearby galaxies and high-redshift galaxies as if they’re two very different areas. But in fact, galaxies that formed at high redshift had to evolve into something, and galaxies we see today had to be something at high redshift.” Weisz’s group works to understand this fundamental connection by studying resolved stellar populations in nearby dwarf galaxies. This work has ...