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A catalog of rotational and radial velocities for evolved stars - IV. Metal-poor stars

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2006-11
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Medeiros, J. R. de
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A catalog of rotational and radial velocities for evolved stars - IV. Metal-poor stars
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Author
  • Medeiros, J. R. de;
  • Silva, J. R. P.;
  • Nascimento, J. D. do;
  • Canto Martins, B. L.;
  • Silva, L. da;
  • Melo, C.;
  • Burnet, M.;
Abstract
Aims. The present paper describes the first results of an observational program intended to refine and extend the existing v sin i measurements of metal-poor stars, with an emphasis on field evolved stars. Methods. The survey was carried out with the FEROS and CORALIE spectrometers. For the v sin i measurements, obtained from spectral synthesis, we estimate an uncertainty of about 2.0 kms(-1). Results. Precise rotational velocities v sin i are presented for a large sample of 100 metal-poor stars, most of them evolving off the main-sequence. For the large majority of the stars composing the present sample, rotational velocities have been measured for the first time.
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URI: https://repositorio.uchile.cl/handle/2250/124824
ISSN: 0004-6361
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ASTRONOMY & ASTROPHYSICS Volume: 458 Issue: 3 Pages: 895-898 Published: NOV 2006
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