Abundance histories for QSO absorption-line systems

Francis Timmes, J. T. Lauroesch, J. W. Truran

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Abundance histories for QSO absorption-line systems as a function of redshift are presented for all metals lighter than gallium. Coupling vanous conventional cosmological models with a simple, first-order model for the chemical evolution of the QSO absorption-line systems allows transformation of the observed abundance trends in the Galaxy to abundance histories for the gas in QSO absorption-line systems. Comparison of the transformed abundance patterns with the zinc to hydrogen [Zn/H] and silicon to hydrogen [Si/H] ratios observed in damped Lyα systems finds agreement over more than two orders of magnitude in abundance with a Λ = 0, Ω = 0.2-1.0, and τdelay = 3 Gyr cosmology, where τdelay is the time between the start of the big bang and the beginning of galaxy formation. Alternative meanings for the required time delay are explored along with extensions to the simple first-order model. Predictions are made for the abundance histories of elements not yet observed in QSO absorption-line systems.

Original languageEnglish (US)
Pages (from-to)468-476
Number of pages9
JournalAstrophysical Journal
Volume451
Issue number2
StatePublished - Oct 1 1995
Externally publishedYes

Fingerprint

quasars
histories
history
hydrogen
gallium
chemical evolution
galactic evolution
cosmology
silicon
time lag
zinc
galaxies
trends
metal
prediction
predictions
gases
gas
metals

Keywords

  • Cosmology: theory
  • Galaxies: abundances
  • Galaxies: evolution
  • Quasars: absorption lines

ASJC Scopus subject areas

  • Space and Planetary Science

Cite this

Timmes, F., Lauroesch, J. T., & Truran, J. W. (1995). Abundance histories for QSO absorption-line systems. Astrophysical Journal, 451(2), 468-476.

Abundance histories for QSO absorption-line systems. / Timmes, Francis; Lauroesch, J. T.; Truran, J. W.

In: Astrophysical Journal, Vol. 451, No. 2, 01.10.1995, p. 468-476.

Research output: Contribution to journalArticle

Timmes, F, Lauroesch, JT & Truran, JW 1995, 'Abundance histories for QSO absorption-line systems', Astrophysical Journal, vol. 451, no. 2, pp. 468-476.
Timmes F, Lauroesch JT, Truran JW. Abundance histories for QSO absorption-line systems. Astrophysical Journal. 1995 Oct 1;451(2):468-476.
Timmes, Francis ; Lauroesch, J. T. ; Truran, J. W. / Abundance histories for QSO absorption-line systems. In: Astrophysical Journal. 1995 ; Vol. 451, No. 2. pp. 468-476.
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