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SUMMARY:Clash of the Titans: galaxy collisions in the nearby universe  - P
 rofessor Sara Ellison: University of Victoria
DTSTART:20191031T160000Z
DTEND:20191031T170000Z
UID:TALK132136@talks.cam.ac.uk
CONTACT:82768
DESCRIPTION:Astronomy's current model of galaxy evolution is built on a fo
 undation of hierarchical growth\, in which small galaxies merge together t
 o form larger ones.  In addition to the simple accrual of mass\, this merg
 ing process is predicted to fundamentally change the galaxies’ propertie
 s\, such as dramatic morphological transformations\, the triggering of bur
 sts of star formation and high rates of accretion onto the central superma
 ssive black hole.  In this talk I will explain the physical processes behi
 nd 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 wel
 l\, that demand revisions to our models of how mergers shape galaxy evolut
 ion.\n
LOCATION:Sackler Lecture Theatre\, Institute of Astronomy\, Madingley Rise
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