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SUMMARY:Vinicius Placco (NSF NOIRLab): Stellar Genealogy: The Search for t
 he First Stars and Everything in Between
DTSTART:20260416T120000Z
DTEND:20260416T130000Z
DTSTAMP:20260424T204100Z
UID:indico-event-2111@indico.uu.se
DESCRIPTION:Title: Stellar Genealogy: The Search for the First Stars and E
 verything in Between Speaker: Vinicius Placco Affiliation: NSF NOIRLab 
 Room: Å101195\, Heinz-Otto Kreiss Time: 14:00-15:00 Abstract: The lowe
 st metallicity stars in the Milky Way Halo are the fossil records of the e
 arliest star-forming environments in the Universe. Chemo-dynamical studies
  of such rare objects can address a myriad of open questions\, ranging fro
 m primordial nucleosynthesis and the mass function of the first stars to t
 he nature of the astrophysical r-process and the early merger history of t
 he Milky Way. The detailed abundance patterns of these stellar relics\, wh
 ich can only be obtained from high-resolution spectroscopy\, help us build
  a clear understanding of the pathways that led to the chemical complexity
  we observe today. In this talk\, I will present recent results on the spe
 ctroscopic validation of low-metallicity stars selected from narrow-band p
 hotometry and low-resolution spectroscopy. I will also talk about the disc
 overy of chemically peculiar stars in the Milky Way\, which present chemic
 al abundance patterns that match the ones from the ejecta of a neutron-sta
 r merger event and zero-metallicity supernovae. Combined\, these efforts a
 re adding key pieces of information to help stellar archaeologists constra
 in the chemical evolution of the Universe and solve the intricate chemo-dy
 namical puzzle of the formation of the Milky Way.\n\nhttps://indico.uu.se/
 event/2111/
LOCATION:Å101195\, Heinz-Otto Kreiss
URL:https://indico.uu.se/event/2111/
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