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SUMMARY:The relationship between the inter-galactic medium and galaxies - 
 Simon Morris (University of Durham)
DTSTART:20150602T130000Z
DTEND:20150602T140000Z
UID:TALK59214@talks.cam.ac.uk
CONTACT:David Titterington
DESCRIPTION:The way that gas collapses into dark matter potentials\, and t
 he feedback processes that are produced by the consequent star formation a
 nd accreting black holes\, determine the present day appearance of galaxie
 s.  Despite decades of study\, this inter-relationship is still poorly und
 erstood.  We have used a carefully constructed sample of galaxies\, observ
 ed in regions close to the lines of sight towards background QSOs for whic
 h we have obtained UV spectroscopy\, to map out the spatial correlations b
 etween inter-galactic (and circum-galactic) gas and galaxies from z~1 to t
 he present day.  I will discuss the results of this comparison and also de
 scribe how the results can be used to test the sub-grid physics being buil
 t into the current generation of hydrodynamical models for galaxy formatio
 n\, and hence improve our understanding of the dominant physical processes
  generating the observed galaxy luminosity function.\n
LOCATION:Martin Ryle Seminar Room\, Kavli Institute
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