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={John M. O’Meara and David Tytler and David Kirkman and Nao Suzuki and Jason Xavier Prochaska and Dan Lubin and Arthur M. Wolfe},
  journal={The Astrophysical Journal},
  year={2001},
  volume={552},
  pages={718 - 730}
}
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… 

The Deuterium-to-Hydrogen Abundance Ratio toward the QSO SDSS J155810.16–003120.0

We present a measurement of the D/H abundance ratio in a metal-poor damped Lyα (DLA) system along the sight line of QSO SDSS 1558-0031. The DLA system is at redshift z = 2.70262 and has a neutral

The Deuterium Abundance in the z=0.7 absorber towards QSO PG1718+4807

We report on a further analysis of the ratio of deuterium to hydrogen (D/H) using Hubble Space Telescope (HST) spectra of the z= 0.701 Lyman limit system towards the quasi-stellar object (QSO)

The Cosmological Baryon Density from the Deuterium-to-Hydrogen Ratio in QSO Absorption Systems: D/H toward Q1243+3047

We report the detection of deuterium absorption at redshift 2.525659 toward Q1243+3047. We describe improved methods to estimate the deuterium to hydrogen abundance ratio (D/H) in absorption systems,

Deuterium/hydrogen in a new Lyman limit absorption system at z= 3.256 towards PKS1937−1009

We have identified a new Lyman limit absorption system towards PKS1937-1009, with logN(H i) = 18.25 ± 0.02 at z = 3.256 that is suitable for measuring D/H. We find a 68.3% confidence range for D/H of

Deuterium at high-redshift: Primordial abundance in the zabs = 2.621 damped Ly-alpha system towards CTQ247

We report the detection of neutral deuterium in the low-metallicity damped Lyman-α system at zabs = 2.621 towards the quasar CTQ 247. Using a high signal-to-noise and high spectral resolution (R = 60

A new, precise measurement of the primordial abundance of deuterium

The metal-poor (Z � 1/100 Z� ) damped Lyman α system (DLA) at redshift zabs = 3.049 84 in the zem � 3.030 QSO SDSS J1419+0829 has near-ideal properties for an accurate deter- mination of the

Deuterium abundance in the most metal-poor damped Lyman alpha system: converging on Ωb,0h2

The most metal-poor damped Lyα system known to date, at zabs= 2.61843 in the spectrum of the QSO Q0913+072, with an oxygen abundance of only ∼1/250 of the solar value, shows six well-resolved DI

One Percent Determination of the Primordial Deuterium Abundance

We report a reanalysis of a near-pristine absorption system, located at a redshift toward the quasar Q1243+307, based on the combination of archival and new data obtained with the HIRES echelle

A New Measurement of the Primordial Abundance of Deuterium: Toward Convergence with the Baryon Density from the Cosmic Microwave Background?

From the analysis of the near-UV spectrum of the quasar (QSO)2206-199, obtained with a long series of exposures with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, we deduce

The Abundance of Deuterium in the Warm Neutral Medium of the Lower Galactic Halo

We use high-resolution ultraviolet spectra to obtain Milky Way interstellar column densities of H I, D I, O I, S II, Fe II, and P II toward the QSO HE 0226-4110 in the Galactic direction l = 253.4°
...

References

SHOWING 1-10 OF 53 REFERENCES

The Deuterium Abundance toward QSO 1009+2956

We present a measurement of the deuterium to hydrogen ratio (D/H) in a metal-poor absorption system at redshift z = 2.504 toward the QSO 1009+2956. We apply the new method of Burles & Tytler to

QSO 0130–4021: A Third QSO Showing a Low Deuterium-to-Hydrogen Abundance Ratio

We have discovered a third quasar absorption system which is consistent with a low deuterium-to-hydrogen abundance ratio, D/H = 3.4 × 10-5. The zabs ~ 2.8 partial Lyman limit system toward Q0130-4021

The Deuterium Abundance toward Q1937–1009

We present a new measurement of the deuterium-to-hydrogen ratio (D/H) in the Lyman limit absorption system at z = 3.572 toward Q1937-1009. Tytler, Fan & Burles (TFB) made the first extragalactic

Cosmological baryon density derived from the deuterium abundance at redshift z = 3.57

TLDR
A baryon density that is 5% of the critical density required to close the Universe is calculated, consistent with that in the interstellar medium (after allowing for Galactic chemical evolution).

Deuterium to hydrogen towards QSO 1009+2956 from a mesoturbulent model

Abstract We present a new analysis of the deuterium absorption at z = 2.504 towards the quasar Q1009+2956 using the mesoturbulent model which accounts for possible correlations in the large-scale

Is Deuterium in High-Redshift Lyman Limit Systems Primordial?

Detections of deuterium in high-redshift Lyman limit absorption systems along the line of sight to QSOs promise to reveal the primordial deuterium abundance. At present, the deuterium abundances

The primordial lithium abundance

Lithium abundances in a selected sample of halo stars have been revised by using the new accurate IRFM effective temperatures by Alonso, Arribas & Mart´onez-Roger (1996a). From 41 plateau stars (Teff

Nitrogen Abundances in Damped Lyα Galaxies

Nitrogen lines of the N I λ1134 and λ1200 multiplets in the damped Lyα (DLA) galaxies at zabs = 2.309, 2.827, and 3.025 toward the QSOs 0100+1300, 1425+6039, and 0347-3819, respectively, have been

What is the big-bang-nucleosynthesis prediction for the baryon density and how reliable is it?

Together, the standard theory of big-bang nucleosynthesis (BBN) and the primeval deuterium abundance now very precisely peg the baryon density. Based upon our analysis of the deuterium data and the

Primordial Lithium and Big Bang Nucleosynthesis

TLDR
It is shown that the observed Li versus Fe trend provides a strong discriminant between alternative models for Galactic chemical evolution of the light elements at early epochs and is limited as much by uncertainties in the nuclear cross sections used in big bang nucleosynthesis (BBN) calculations as by the observed abundance itself.
...