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SUMMARY:Stellar Genealogy: The Search for the First Stars and Everything i
 n Between
DTSTART:20260415T113000Z
DTEND:20260415T123000Z
DTSTAMP:20260428T225000Z
UID:indico-event-9511@indico.fysik.su.se
DESCRIPTION:Speakers: Vinicius M. Placco (NSF/NOIRLab/US NGO\, AZ USA)\n\n
 The lowest metallicity stars in the Milky Way Halo are the fossil records 
 of the earliest star-forming environments in the Universe. Chemo-dynamical
  studies of such rare objects can address a myriad of open questions\, ran
 ging from primordial nucleosynthesis and the mass function of the first st
 ars to the nature of the astrophysical r-process and the early merger hist
 ory of the Milky Way. The detailed abundance patterns of these stellar rel
 ics\, which can only be obtained from high-resolution spectroscopy\, help 
 us build a clear understanding of the pathways that led to the chemical co
 mplexity we observe today. In this talk\, I will present recent results on
  the spectroscopic validation of low-metallicity stars selected from narro
 w-band photometry and low-resolution spectroscopy. I will also talk about 
 the discovery of chemically peculiar stars in the Milky Way\, which presen
 t chemical abundance patterns that match the ones from the ejecta of a neu
 tron-star merger event and zero-metallicity supernovae. Combined\, these e
 fforts are adding key pieces of information to help stellar archaeologists
  constrain the chemical evolution of the Universe and solve the intricate 
 chemo-dynamical puzzle of the formation of the Milky Way.\n\nhttps://indic
 o.fysik.su.se/event/9511/
LOCATION:FC61 (AlbaNova Main Building)
URL:https://indico.fysik.su.se/event/9511/
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