Extremely metal-poor stars in classical dwarf spheroidal galaxies: Fornax, Sculptor, and Sextans

@article{Tafelmeyer2010ExtremelyMS,
  title={Extremely metal-poor stars in classical dwarf spheroidal galaxies: Fornax, Sculptor, and Sextans},
  author={Martin Tafelmeyer and Pascale Jablonka and Vanessa Hill and Matthew D. Shetrone and Eline Tolstoy and Michael J. Irwin and Giuseppina Battaglia and Amina Helmi and Else Starkenburg and Kim A. Venn and Tom Abel and P. François and A. Kaufer and Pierre L. North and Francesca Primas and Thomas Szeifert},
  journal={Astronomy and Astrophysics},
  year={2010},
  volume={524},
  pages={58}
}
We present the results of a dedicated search for extremely metal-poor stars in the Fornax, Sculptor, and Sextans dSphs. Five stars were selected from two earlier VLT/Giraffe and HET/HRS surveys and subsequently followed up at high spectroscopic resolution with VLT/UVES. All of them turned out to have [Fe/H] less than or similar to -3 and three stars are below [Fe/H] similar to -3.5. This constitutes the first evidence that the classical dSphs Fornax and Sextans join Sculptor in containing… 

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