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SUMMARY:Galactic Winds: Implications for Models of Galaxy Evolution - Tim 
 Heckman (Johns Hopkins University\, CAS)
DTSTART:20150423T153000Z
DTEND:20150423T163000Z
UID:TALK59173@talks.cam.ac.uk
CONTACT:Simon Hodgkin
DESCRIPTION:Galactic winds are the most dramatic form of feedback provided
  by massive stars. In the first part of my talk I will summarize the impor
 tance of galactic winds for the evolution of galaxies and the inter-galact
 ic medium.  I will briefly describe the physical processes that drive thes
 e winds\, and give a short guided tour of the multi-phase wind driven from
  the local starburst galaxy M82. I will then describe how the properties o
 f winds are typically incorporated in cosmological simulations and semi-an
 alytic models.  In the second part of my talk I report on recent work that
  has determined the dependence of the basic wind properties (outflow veloc
 ities\, mass and momentum outflow rates) on the properties of the galaxy/s
 tarburst.  These results are strongly at odds with some of the most popula
 r wind prescriptions in simulations and models. In the third part of the t
 alk I will describe observations of the impact of galactic winds on the ci
 rcum-galactic medium. Finally\, I will report on new observations that rev
 eal how stellar feedback\, including galactic winds\, enabled early star-f
 orming galaxies to re-ionize the universe. 
LOCATION:Sackler Lecture Theatre\, IoA (tea at 4:00 pm)
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