"Tracing Evolution in the Outskirts of the Pinwheel Galaxy" is the title of the talk to be presented by Chris Mihos, Professor of Astronomy at Case Western Reserve University.
Abstract: The nearby Pinwheel Galaxy (M101) represents one of our best opportunities to study galaxy evolution in detail. Using both ground-based data and Hubble Space Telescope observations, we can probe the ages and chemical composition of stars in the galaxy's extended outer disk, a sensitive tracer of its evolutionary history. In conjunction with computer simulations, Professor Mihos will demonstrate how the galaxy's outer disk continues to grow via repeated interactions with neighboring galaxies in the group environment.
A reception for Professor Mihos begins at 4:10 p.m. in the Anderson Lounge -- Wright Lab, second floor.