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UID:UW-Physics-Event-7874
DTSTART:20220830T190000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T113402Z
LAST-MODIFIED:20220826T142411Z
LOCATION:Join Zoom Meeting https://berkeley.zoom.us/j/91230714547
SUMMARY:Escapers\, merger remnants and double-faced stars: studying ex
 otic white dwarfs with ZTF and Gaia\, Network in Neutrinos\, Nuclear A
 strophysics\, and Symmetries (N3AS) Seminar\, Ilaria Caiazzo \, Caltec
 h
DESCRIPTION:The advent of Gaia and of large photometric and spectrosco
 pic surveys is changing the landscape of white dwarf studies. These in
 credible new data sets\, together with improved models\, have enabled 
 tackling some unsolved mysteries concerning white dwarfs as a populati
 on\, as well as discovering extremely peculiar objects that challenge 
 our understanding of white dwarf formation and evolution. In my talk\,
  I will show how the precise astrometry from Gaia has dramatically imp
 roved our capability of studying young star clusters\, and therefore p
 robe the evolution of white dwarfs born from single progenitor stars. 
 On the other hand\, the Zwicky Transient Facility is shedding light on
  the evolution of white dwarfs in binary systems\, substantially incre
 asing the number of known eclipsing white dwarf binaries and finding t
 he final products of such binaries. In fact\, ZTF is discovering a lar
 ge number of massive\, rapidly rotating and highly magnetized white dw
 arfs whose extreme properties characterize them with high confidence a
 s remnants of white-dwarf mergers. Finding a population of white dwarf
  merger remnants just below the Chandrasekhar mass can help constrain 
 the number of mergers in the Galaxy and their contribution to the type
  Ia supernova rate\, as well as help us understand the origin of stron
 g magnetic fields in white dwarfs. I will present some early results o
 f the search\, including the discovery of extremely peculiar white dwa
 rfs.<br>
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\nJoin Zoom Meeting<br>
\nhttps://berkeley.zoom.us/j/9
 1230714547<br>
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URL:https://www.physics.wisc.edu/events/?id=7874
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