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SUMMARY:Michele Trabucchi (Padova): Understanding the Complexity of Long-P
 eriod Variables
DTSTART:20260507T120000Z
DTEND:20260507T130000Z
DTSTAMP:20260515T035000Z
UID:indico-event-2126@indico.uu.se
DESCRIPTION:Title: Understanding the Complexity of Long-Period Variables 
 Speaker: Michele Trabucchi Affiliation: University of Padova Room: Å101
 132 Time: 14:00-15:00 Abstract: Long-Period Variable stars (LPVs) have 
 been studied by western astronomers for over four centuries\, at least sin
 ce the first documented report of the brightness changes of Mira\, the pro
 totype of the homonymous sub-type of LPVs. Nowadays\, we understand them t
 o be stars born with about 1-10 times the solar mass at birth\, currently 
 experiencing the terminal stages of their evolution\, namely the Asymptoti
 c Giant Branch (AGB). Intrinsically very bright\, these fascinating object
 s contribute substantially to the integrated luminosity and the spectral e
 nergy distribution of unresolved stellar populations\, especially at infra
 red wavelengths\, and play a crucial role in the enrichment of the interst
 ellar medium in dust and nucleosynthesis products. Moreover\, they follow 
 period-luminosity and period-age relations with promising applications as 
 standard candles and age tracers\, especially in the modern era of large-s
 cale time-domain surveys such as Gaia and the Rubin Observatory’s LSST. 
 Yet\, a comprehensive understanding of their behavior remains elusive\, pr
 imarily because it emerges from a combination of strongly intertwined phys
 ical processes (convection\, pulsation\, dust formation\, stellar winds\, 
 binary interactions)\, such that the standard assumptions made in stellar 
 modeling often break down. This seminar is intended to convey a general ov
 erview of the properties of LPVs in order to appreciate their complexity\,
  in light of the most recent results and in view of future challenges. \n
 \nhttps://indico.uu.se/event/2126/
LOCATION:Å101132
URL:https://indico.uu.se/event/2126/
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