Precision measures of the primordial abundance of deuterium

  title={Precision measures of the primordial abundance of deuterium},
  author={Ryan J. Cooke and Max Pettini and Regina A. Jorgenson and Michael T. Murphy and Charles C. Steidel University of California and Santa Cruz and Institute of Radio Astronomy and University of Cambridge and Kavli Institute for Cosmology and Institute for Astronomy and University of Hawaii and Swinburne University of Technology and California Institute of Technology.},
  journal={The Astrophysical Journal},
We report the discovery of deuterium absorption in the very metal-poor ([Fe/H] = –2.88) damped Lyα system at z_abs = 3.06726 toward the QSO SDSS J1358+6522. On the basis of 13 resolved D I absorption lines and the damping wings of the H I Lyα transition, we have obtained a new, precise measure of the primordial abundance of deuterium. Furthermore, to bolster the present statistics of precision D/H measures, we have reanalyzed all of the known deuterium absorption-line systems that satisfy a set… 
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