The Deuterium to Hydrogen Abundance Ratio toward a Fourth QSO: HS 0105+1619

@article{Omeara2001TheDT,
  title={The Deuterium to Hydrogen Abundance Ratio toward a Fourth QSO: HS 0105+1619},
  author={J. O'meara and D. Tytler and D. Kirkman and N. Suzuki and J. Prochaska and D. Lubin and A. Wolfe},
  journal={The Astrophysical Journal},
  year={2001},
  volume={552},
  pages={718-730}
}
  • J. O'meara, D. Tytler, +4 authors A. Wolfe
  • Published 2001
  • Physics
  • The Astrophysical Journal
  • We report the measurement of the primordial D/H abundance ratio toward QSO HS 0105+1619. The column density of the neutral hydrogen in the z 2.536 Lyman limit system is high, log N = 19.422 ± 0.009 cm-2, allowing for the deuterium to be seen in five Lyman series transitions. The measured value of the D/H ratio toward QSO HS 0105+1619 is found to be D/H = 2.54 ± 0.23 × 10-5. The metallicity of the system showing D/H is found to be 0.01 solar, indicating that the measured D/H is the primordial D… CONTINUE READING
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