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New Developments in Spiral Structure Theory

What
When 2010-02-12
from 14:10 to 16:00
Where Cody Hall
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Prof. Jerry Sellwood (Rutgers University)

Over 150 years after their discovery, astronomers still lack a complete theory for the origin of the beautiful spiral patterns in disk galaxies.  I will review the various ideas that have been proposed and describe some recent observational data that appear to support a recurrent instability mechanism.