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BEGIN:VEVENT
DTSTART;TZID=Atlantic/Canary:20150618T103000
DTEND;TZID=Atlantic/Canary:20150618T113000
UID:iactalks-791
X-WR-CALNAME: IAC Talks: Open Astronomy Seminars
X-ORIGINAL-URL: /iactalks/Talks/view/791
CREATED:2015-06-18T10:30:00+01:00
X-WR-CALDESC: IAC Talks upcomming talks
SUMMARY:Is star formation a stochastic or a regulated process? 
DESCRIPTION:Is star formation a stochastic or a regulated process? \nProf. 
 Pavel Kroupa\n\nThe stellar initial mass function (IMF) is usually assumed
  to be a  probability density distribution function. Recent data appear to
   question this interpretation though, and I will discuss alternative  app
 lications and results concerning the possibly true nature of the IMF.  Emp
 irical evidence has emerged that the IMF becomes top-heavy in  intense sta
 r bursts and at low metallicity. Related to the IMF are  binary star distr
 ibution functions, and these evolve through dynamical  processes in embedd
 ed star clusters. The insights gained from these  considerations lead to a
  mathematically computable method for  calculating stellar populations in 
 galaxies, with possibly important  implications for the matter cycle in ga
 laxies. It turns out that the  galaxy-wide IMF, the IGIMF, becomes increas
 ingly top-heavy with  increasing galaxy-wide star formation rate, while at
  the same time the  binary fraction in the galactic field decreases.
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