The history of star formation in the universe is being mapped by
observations at many wavelengths. The dominant episodes of star
formation in galaxies were obscured by dust. Submillimeter
observations probe these dusty, ultraluminous star formers, but their
redshift distribution is still rather uncertain. Optical star
formation, by contrast, is well mapped but more difficult to
interpret because of extinction. At recent times substantial star
formation is still occurring, primarily in small galaxies. This
cosmic downsizing, with comparable light coming from a larger number
of less luminous sources, parallels a similar evolution of active
galactic nuclei, which I will also discuss.
Tuesday, October 28th
Seminar is to be held at 4:00 PM in the conference room
on the second floor of Dearborn Observatory
Refreshments will be served at 3:30
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