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SUMMARY:Positive feedback in galaxies - Roberto Maiolino\, Battcock Centre
 \, Cavendish Astrophysics
DTSTART:20150604T153000Z
DTEND:20150604T163000Z
UID:TALK59242@talks.cam.ac.uk
CONTACT:Simon Hodgkin
DESCRIPTION:During the past decade many theoretical and observational acti
 vities\nhave focused on the understanding of the negative feedback mechani
 sms\nresponsible for quenching star formation in galaxies.\nHowever\, rece
 nt theories have proposed that some of these mechanisms\n(and in particula
 r massive outflows) can actually also boost star formation\nin galaxies.\n
 This would be an new mode of star formation in galaxies\, which would be\n
 in addition to the "classical" star formation modes (i.e. the "quiescent" 
 mode\,\nin galaxy discs\, and the "starburst" mode\, galaxy mergers).\nAlt
 hough this scenario is attracting growing interest\, observational evidenc
 e\nfor such "positive feedback" at work has been sparse so far.\nHowever\,
  the elusiveness of such mechanism may simply be a consequence of \nobserv
 ational difficulties.\nI will review the observational evidence of positiv
 e feedback obtained\nso far and I will show some new results revealing tha
 t this mechanism\ncan actually play a major role in galaxy evolution.
LOCATION:Sackler Lecture Theatre\, IoA (tea at 4:00 pm)
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