Speaker: Curt Struck (ISU)

Title: The bar component in galaxies: review and new results on resonant orbit families 

Abstract: This talk will begin with a pedagogical review of the phenomenology and theory of the bar component in galaxies. The theory will include the processes that drive bar formation such as gravitation instability, near resonant orbit capture, and tidal triggering. Bar evolution via growth and slowdown, the buckling instability, change in resonant orbit structure, and the formation of secular bulge and lens components will be described. The talk will conclude with a summary of my recent work on the families of resonant orbits, and constraints on them in different ranges of pattern frequencies in a variety of galaxy disk potentials.