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VERSION:2.0
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PRODID:UW-Madison-Physics-Events
BEGIN:VEVENT
SEQUENCE:8
UID:UW-Physics-Event-9821
DTSTART:20261119T213000Z
DTEND:20261119T223000Z
DTSTAMP:20261015T133823Z
LAST-MODIFIED:20261015T114313Z
LOCATION:4421 Sterling Hall
SUMMARY:Study of Exotic Stellar Populations in Open Clusters and Galac
 tic Fields\, Astronomy Colloquium\, Anju Panthi\, Birla Institute of A
 strophysics\, India
DESCRIPTION:Binary interactions can significantly alter stellar evolut
 ion\, producing exotic populations that cannot be fully explained by s
 ingle-star evolution. In this talk\, I will present a multi-wavelength
  study of blue straggler stars (BSSs)\, yellow straggler stars (YSSs)\
 , and blue lurkers in open clusters\, along with BSSs in the Galactic 
 field. Using ultraviolet observations from AstroSat/UVIT together with
  multi-wavelength photometry\, I search for hot white-dwarf companions
  and constrain the mass-transfer histories of these systems. I will al
 so discuss time-domain studies using TESS and ZTF light curves to inve
 stigate variability and binarity. I will discuss how binary-evolution 
 modelling with MESA can be used to trace the evolutionary history of t
 he BSS–white dwarf system. Together\, these complementary approaches
  provide insights into the formation pathways of exotic stellar popula
 tions and the role of binary interactions in shaping stellar evolution
 .
URL:https://www.physics.wisc.edu/events/?id=9821
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