BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:Constraining Globular Clusters Formation through studies of young 
 massive star clusters - Nate Bastian (Liverpool John Moores)
DTSTART:20140306T163000Z
DTEND:20140306T173000Z
UID:TALK49664@talks.cam.ac.uk
CONTACT:Simon Hodgkin
DESCRIPTION:*ABSTRACT*\n\nGlobular clusters (GCs) are traditionally though
 t of as the quintessential simple stellar populations (i.e.\, all stars ha
 ve the same age and abundance)\, however\, we now know that all GCs show a
 bundance spreads in certain elements\, and that their colour-magnitude dia
 grams are not well represented by a single isochrone. Various scenarios ha
 ve been put forward to explain these anomalies\, and most invoke multiple 
 star formation events within the clusters.    While\nGCs were generally th
 ought to only form in the special conditions present in the early universe
 \, one of the most surprising discoveries of the Hubble Space Telescope ha
 s been that GCs are still forming in the local universe today.  These youn
 g massive clusters (YMCs) can be used to place strong constraints on the f
 ormation of GCs\, in particular they can be used to test theories for the 
 origin of the "multiple populations" of stars observed in GCs.  I will pre
 sent\nrecent results on YMCs\, paying particular attention to whether they
  have undergone multiple star formation events\, predicted by most scenari
 os for the multiple populations in GCs.  No YMCs found to date show eviden
 ce of multiple bursts or extended star formation histories\, ruling out pr
 eviously preferred models (i.e. the "AGB scenario").   I\nwill present a n
 ew scenario for the origin of the multiple populations within GCs that doe
 s not require multiple star formation episodes.\n
LOCATION:Sackler Lecture Theatre\, IoA (tea at 4:00 pm)
END:VEVENT
END:VCALENDAR