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SUMMARY:Obesity in the Universe:  Why Did Early-Type Galaxies Grow in Size
  - Richard Ellis (CALTECH)
DTSTART:20120726T150000Z
DTEND:20120726T160000Z
UID:TALK38947@talks.cam.ac.uk
CONTACT:Paula younger
DESCRIPTION:Once considered the simplest class of galaxy to model and expl
 ain\, the assembly history of early type galaxies still presents many puzz
 les. Spectroscopic observations show that the most massive examples comple
 ted their star formation earlier than that in their less massive counterpa
 rts\, in apparent contradiction to popularly-held hierarchical models. Hub
 ble observations have also revealed that many of the most massive early ty
 pes seen at high redshift are much more compact than their present-day\neq
 uivalents. This suggests they somehow expanded in size without growing sig
 nificantly in mass. Clearly\, early type galaxies still have a lot to tell
  us about\ngalaxy formation and assembly. I will reveal the progress being
  made with new spectroscopic and Hubble data (....but don't promise to sol
 ve all the puzzles).\n\nRefreshments will be available following the semin
 ar.
LOCATION:Martin Ryle Seminar Room\, KICC
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