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Colloquium

Unraveling the assembly history of the Galactic halo with CEMP-no stars

2018-10-09
  • Speaker : Dr. Jinmi Yoon (University of Notre Dame)
  • Date : 2018-12-12 16:00 ~ 17:00
  • Location : JYS331-2
  • Host : Jinho Kim

The Galactic halo is thought to form, at least in part, from the accretion of dark-matter dominated mini-halos.  These mini-halos are also responsible for donating the so-called CEMP-no stars to the halo, which are thought to be bona-fide second-generation stars.  A recent study has suggested the existence of multiple pathways to form CEMP-no stars, based on the distinct morphological stellar distribution present in the A(C)-[Fe/H] space. In this talk, I will briefly review our current understanding of the chemodynamical nature of the CEMP-no stars and its implication on the nature of the first stars. I also present important evidence regarding Galactic assembly history revealed by the similarity of CEMP-no group morphology present among the metal-poor stars in satellite dwarf galaxies.