What Is the Total Deuterium Abundance in the Local Galactic Disk?

  title={What Is the Total Deuterium Abundance in the Local Galactic Disk?},
  author={Jeffrey L. Linsky and Bruce T. Draine and H. Warren Moos and Edward B. Jenkins and Brian E. Wood and Cristina Oliveira and William P. Blair and Scott D. Friedman and C{\'e}cile Gry and D. C. Knauth and Jeffrey W. Kruk and Sylvestre Lacour and Nicolas Lehner and Seth Redfield and J. Michael Shull and George Sonneborn and Gerard M. Williger},
  journal={The Astrophysical Journal},
  pages={1106 - 1124}
Analyses of spectra obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE) satellite, together with spectra from the Copernicus and interstellar medium absorption profile spectrograph (IMAPS) instruments, reveal an unexplained, very wide range in the observed deuterium/hydrogen (D/H) ratios for interstellar gas in the Galactic disk beyond the Local Bubble. We argue that spatial variations in the depletion of deuterium onto dust grains can explain these local variations in the observed… 

The total deuterium abundance in the local Galactic disk: decisions and implications

  • J. Linsky
  • Physics
    Proceedings of the International Astronomical Union
  • 2009
Abstract Analyses of FUSE spacecraft spectra have provided measurements of D/H in the gas phase of the interstellar medium for many lines of sight extending to several kpc from the Sun. These

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High-resolution spectra of the hot white dwarf G191-B2B, covering the wavelength region 905-1187 Å, were obtained with the Far Ultraviolet Spectroscopic Explorer (FUSE). These data were used in

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We present an analysis of high-resolution Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph (STIS) observations of O I λ1356 and H I Lyα absorption in 36 sight lines that probe a

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Estimates of the interstellar deuterium abundance span a wide range of values. Until recently, it was customary to adopt the abundance of deuterium measured in the Local Bubble as representative of

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We present an analysis of interstellar absorption along the line of sight to the nearby white dwarf star HZ 43A. The distance to this star is 68 ± 13 pc, and the line of sight extends toward the

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,