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Matching Models to Merging Galaxies: Lost and Found in Parameter Space

Matching Models to Merging Galaxies: Lost and Found in Parameter Space


 

Joshua Barnes (IfA, U Hawaii)

ABSTRACT

Galactic collisions provide an elegant explanation for peculiar galaxies, but very few collisions have been dynamically modeled. I describe a new approach to navigating the parameter space of galactic collisions and finding initial conditions which reproduce the observed morphology and kinematics of peculiar galaxies. The method is tested on a randomly-generated sample of galactic collisions; in many cases it accurately recovers the initial conditions of these encounters.