Rotation and Macroturbulence in Metal-Poor Field Red Giant and Red Horizontal Branch Stars

@article{Carney2008RotationAM,
  title={Rotation and Macroturbulence in Metal-Poor Field Red Giant and Red Horizontal Branch Stars},
  author={Bruce W. Carney and David F. Gray and David Yong and David W. Latham and N. Manset and Robin Zelman and John B. Laird},
  journal={The Astronomical Journal},
  year={2008},
  volume={135},
  pages={892-906}
}
We report the results for rotational velocities, Vrot sin i, and macroturbulence dispersions, ζRT, for 12 metal-poor field red giant branch (RGB) stars and 7 metal-poor field red horizontal branch (RHB) stars. The results are based on Fourier transform analyses of absorption line profiles from high-resolution (R ≈ 120,000), high-S/N (≈215 per pixel; ≈345 per resolution element) spectra obtained with the Gecko spectrograph at the Canada-France-Hawaii Telescope (CFHT). The stars were selected… Expand
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