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Dr. Sara Ellison - University of Victoria


Speaker: Sara Ellison, University of Victoria

Title: Galaxy mergers in the nearby Universe

Description: Astronomy's current model of galaxy evolution is built on a foundation of hierarchical growth, in which small galaxies merge together to form larger ones. In addition to the simple accrual of mass, this merging process is predicted fundamentally change the galaxies’ properties, such as dramatic morphological transformations, the triggering of bursts of star formation and high rates of accretion onto the central supermassive black hole. In this talk I will explain the physical processes behind these predictions, and present the observations that we are performing in order to test the theory. Although many of the predictions are indeed borne out by experiment, there have been some surprising conflicts as well, that demand revisions to our models of how mergers shape galaxy evolution.

Location: ABB-102

Website - http://www.astro.uvic.ca/~sara/

Host: James Wadsley
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McMaster University - Faculty of Science | Physics & Astronomy