BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Review - gravitational instabilities and the formation of gas gian
 t planets - Boley\, A (Zurich)
DTSTART:20090818T151000Z
DTEND:20090818T155000Z
UID:TALK19507@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Gas giant planets can be formed directly through disk instabil
 ity if the Toomre Q parameter is near unity and the local cooling time is 
 comparable to or less than the local dynamical time. Whether these conditi
 ons can ever be realistically met during disk evolution has been the focus
  of heated debate. In this talk\, I will review the constraints that analy
 tical work and detailed radiation hydrodynamics simulations have placed on
  the disk instability model. I will outline where there is general agreeme
 nt in the field and where controversy remains. In particular\, I will summ
 arize recent work by multiple authors that suggests that planet formation 
 by disk instability can operate at large disk radii (~100 AU).
LOCATION:Seminar Room 1 Newton Institute
END:VEVENT
END:VCALENDAR