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DTSTART:20270328T030000
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DTSTAMP:20261102T094436Z
UID:1793872800@ist.ac.at
DTSTART:20261105T110000
DTEND:20261105T120000
DESCRIPTION:Speaker: Murat Uzundag\nhosted by Astronomers \nAbstract: Compa
 ct pulsating stars\, including hot subdwarfs and white dwarfs\, provide po
 werful laboratories for investigating the late stages of stellar evolution
  through asteroseismology. Their pulsations offer a unique opportunity to 
 probe the internal structure and constrain the physical processes governin
 g their evolution. Their pulsation periods range from a few minutes to sev
 eral hours\, with amplitudes reaching up to 0.4 mag. These brightness vari
 ations can be detected and characterized through high-cadence\, high-preci
 sion time-series photometry. Over the past decade\, space missions such as
  Kepler/K2 and TESS have substantially advanced the field by providing ext
 ended\, nearly continuous photometric observations. These data have enable
 d precise pulsation-frequency measurements and increasingly sophisticated 
 asteroseismic investigations of stellar interiors\, chemical stratificatio
 n\, core composition\, rotation\, and evolutionary history.In this review 
 talk\, I will discuss recent advances in the asteroseismology of pulsating
  hot subdwarfs and white dwarfs\, highlighting key observational discoveri
 es and developments in theoretical modelling. I will examine the complemen
 tary contributions of ground-based telescopes and space missions\, with pa
 rticular emphasis on the opportunities offered by PLATO. With dedicated ob
 serving time awarded to programmes targeting both hot subdwarfs and white 
 dwarfs\, PLATO will further advance the asteroseismic study of these two c
 omplementary populations. Its long-duration\, high-precision photometry wi
 ll enable systematic investigations of pulsation properties\, improve cons
 traints on stellar interiors\, and provide new insights into stellar evolu
 tion and binary interactions. Combined with spectroscopy\, Gaia astrometry
 \, and theoretical modelling\, these observations will help connect pulsat
 ion measurements to the physical processes shaping the evolution of compac
 t stars. The talk will provide an accessible overview of the field and hig
 hlight how ongoing observations and future PLATO data will deepen our unde
 rstanding of late stellar evolution.
LOCATION:Mondi 2a+b\, Central Building\, ISTA
ORGANIZER:
SUMMARY:Murat Uzundag: Seismic Probes of Stellar Evolution: Hot Subdwarfs a
 nd White Dwarfs in the PLATO Era
URL:https://talks-calendar.ista.ac.at/events/6733
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