Accurate Measurements of the Local Deuterium Abundance from HST Spectra
Chapter
Abstract
An accurate measurement of the primordial value of D/H would provide a critical test of nucleosynthesis models for the early universe and the baryon density. I briefly summarize the ongoing HST observations of the interstellar H and D Lyman-α absorption for lines of sight to nearby stars and comment on recent reports of extragalactic D/H measurements.
Keywords
Column Density Baryon Density Nearby Star Hubble Expansion Galactic Chemical Evolution
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References
- Boesgaard, A.M. & Steigman, G. (1985): ARAA 23 319 Carswell, R.F., et. al. (1994): MNRAS 268 Ll Linsky, J.L., et. al. (1993): ApJ 402 694Google Scholar
- Linsky, J.L., Diplas, A., Wood, B., Brown, A., & Savage, B.D. (1994), in preparation McCullough, P.R. (1992): ApJ 390 213CrossRefGoogle Scholar
- Songaila, A., Cowie, L.L., Hogan, C.J., & Rugers, M. (1994): Nature 368 599ADSCrossRefGoogle Scholar
- Steigman, G. & Tosi, M. (1992): ApJ 401 150ADSCrossRefGoogle Scholar
- Tremaine, S. (1992): Physics Today45 28CrossRefGoogle Scholar
- Walker, T.P., et. al. (1991): ApJ 376 51ADSCrossRefGoogle Scholar
- Wilson, T.L. & Rood, R.T. (1994): ARAA 32 191ADSCrossRefGoogle Scholar
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© International Astronomical Union 1996