Evidence for the accretion origin of halo stars with an extreme r-process enhancement

@article{Xing2019EvidenceFT,
  title={Evidence for the accretion origin of halo stars with an extreme r-process enhancement},
  author={Qianfan Xing and Gang Zhao and Wako Aoki and Satoshi Honda and Haining Li and Miho N. Ishigaki and Tadafumi Matsuno},
  journal={Nature Astronomy},
  year={2019},
  pages={1-5}
}
Small stellar systems such as dwarf galaxies are suggested to be the main building blocks of our Galaxy according to numerical simulations1 in Λ cold dark matter models and observational support for this hypothesis comes from the existence of stellar streams such as the Sagittarius tidal stream2. However, it is unclear how many and what kind of stars in our Galaxy originate from satellite dwarf galaxies, something that could be constrained by analysing chemical abundances of metal-poor stars… 

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