Seven new carbon-enhanced metal-poor RR Lyrae stars

  title={Seven new carbon-enhanced metal-poor RR Lyrae stars},
  author={Catherine R. Kennedy and Richard J. Stancliffe and Charles A. Kuehn and Timothy C. Beers and Thomas David Kinman and Vinicius M. Placco and Henrique Reggiani and Silvia Rossi and Young Sun Lee},
  journal={The Astrophysical Journal},
We report estimated carbon-abundance ratios, [C/Fe], for seven newly discovered carbon-enhanced metal-poor (CEMP) RR Lyrae stars. These are well-studied RRab stars that had previously been selected as CEMP candidates based on low-resolution spectra. For this pilot study, we observed eight of these CEMP RR Lyrae candidates with the Wide Field Spectrograph on the ANU 2.3 m telescope. Prior to this study, only two CEMP RR Lyrae stars had been discovered: TY Gru and SDSS J1707+58. We compare our… 

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