The Chemical Composition and Age of the Metal-poor Halo Star BD +17°3248*

  title={The Chemical Composition and Age of the Metal-poor Halo Star BD +17°3248*},
  author={J. J. Cowan and Christopher Sneden and Scott M. Burles and Inese I. Ivans and Timothy C. Beers and James W. Truran and James E. Lawler and Francesca Primas and George M. Fuller and Bernd Pfeiffer and Karl Ludwig Kratz},
  journal={The Astrophysical Journal},
We have combined new high-resolution spectra obtained with the Hubble Space Telescope (HST )a nd ground-based facilities to make a comprehensive new abundance analysis of the metal-poor, halo star BD +17 � 3248. We have detected the third r-process peak elements osmium, platinum, and (for the first time in a metal-poor star) gold, elements whose abundances can only be reliably determined using HST. Our observations illustrate a pattern seen in other similar halo stars with the abundances of the… Expand
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