Deep SDSS optical spectroscopy of distant halo stars - III. Chemical analysis of extremely metal-poor stars

@article{FernandezAlvar2016DeepSO,
  title={Deep SDSS optical spectroscopy of distant halo stars - III. Chemical analysis of extremely metal-poor stars},
  author={Emma Fern'andez-Alvar and C. Allende Prieto and Timothy C. Beers and Young S Lee and Thomas Masseron and Donald P. Schneider},
  journal={Astronomy and Astrophysics},
  year={2016},
  volume={593}
}
  • Emma Fern'andez-Alvar, C. Allende Prieto, +3 authors Donald P. Schneider
  • Published 2016
  • Physics
  • Astronomy and Astrophysics
  • Aims. We present the results of an analysis of 107 extremely metal-poor (EMP) stars with metallicities lower than [Fe/H] =− 3.0, identified in medium-resolution spectra in the Sloan Digital Sky Survey (SDSS). Our analysis provides estimates of the stellar effective temperatures and surface gravities, as well as iron, calcium, and magnesium abundances. Methods. We followed the same method as in previous papers of this series. The method is based on comparisons of the observed spectra with… CONTINUE READING

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