Cosmic Downsizing: In the early Universe, a small number of giant galaxies containing colossal black holes and prodigious bursts of star formation dominated the cosmos. More recently, the creation of stars and the accretion of material into black holes has been taking place in a large number of medium-size and small galaxies.  Dr. Barger will present observations made at many different wavelengths that show this vast downsizing of cosmic activity.

Dr. Amy Barger is an observational cosmologist who maps star and galaxy formation using observations made at many wavelengths. She has discovered new populations of dusty galaxies and supermassive black holes in the distant Universe. From 1996 to 2000, she was a postdoctoral fellow at the UH Institute for Astronomy. In 2000, she joined the faculty of the University of Wisconsin-Madison, where she is now an associate professor. She also holds an appointment as affiliate graduate faculty in the UH Department of Physics and Astronomy. In 2002, she won the prestigious Newton Lacy Pierce Prize given annually by the American Astronomical Society to an astronomer under the age of 35 for outstanding achievement in observational astronomical research over the past five years.

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