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SUMMARY:Special Seminar | Dr. Sebastian Kamann (Liverpool John Moores Univ
 ersity)
DTSTART:20260512T123000Z
DTEND:20260512T130000Z
DTSTAMP:20260510T030651Z
UID:www.aip.de-2446
CATEGORIES:Scientific
CATEGORIES:Scientific Talk
CATEGORIES:Public
CATEGORIES:Special Seminar
CATEGORIES:Galaxies\, Cosmology
CONTACT:Peter Weilbacher <pweilbacher@aip.de>
DESCRIPTION:Speaker: Dr. Sebastian Kamann (Liverpool John Moores Universit
 y)\nTitle: Wempe lecture 3 “Young massive star clusters: Treasure chests
  of stellar evolution”\nAbstract: The colour–magnitude diagrams (CMDs)
  of star clusters underpin stellar astrophysics. They calibrate stellar ev
 olution models\, enable age-dating of stellar populations\, and provide te
 mplates for interpreting unresolved galaxies. Yet the CMDs of young massiv
 e clusters show surprising features\, such as split main sequences and ext
 ended turn-offs. This raises the question of whether we truly understand t
 he mechanisms governing stellar distributions across the CMD.\nIn this tal
 k\, I will show how binary interactions and stellar rotation reshape CMD m
 orphologies. Using observations of young massive clusters in the Magellani
 c Clouds obtained with HST and MUSE\, we measure the spin velocities of la
 rge stellar samples and characterise the clusters’ binary populations. O
 ur results reveal distinct populations of slow and fast rotators occupying
  different loci in the CMD. The detection of post-interaction binaries\, s
 uch as blue stragglers and stripped stars\, further enables us to constrai
 n population synthesis models and to assess the contribution of massive st
 ar clusters to the cosmic rate of compact binary mergers observed via grav
 itational waves.\n
LOCATION:AIP\; Kirch building\, Conference room
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