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QSO absorption lines and the gas and star content of high redshift galaxies

Published online by Cambridge University Press:  07 August 2017

U. Fritze ,
v. Alvensleben ,
H. Krüger  and
K. J. Fricke
U. Fritze
Affiliation:
Universitätssternwarte Geismarlandstr. 11 W–3400 Göttingen Germany
v. Alvensleben
Affiliation:
Universitätssternwarte Geismarlandstr. 11 W–3400 Göttingen Germany
H. Krüger
Affiliation:
Universitätssternwarte Geismarlandstr. 11 W–3400 Göttingen Germany
K. J. Fricke
Affiliation:
Universitätssternwarte Geismarlandstr. 11 W–3400 Göttingen Germany

Abstract

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We present a unified model for the detailed chemical evolution of individual elements from 12C to 56Fe and the photometric properties of galaxies via spectral evolutionary synthesis. Observations of narrow, heavy - element QSO absorption lines show an increase in the number of MgII systems per redshift interval for redshifts 0 <Zr ≤ 1.5 and a decrease in the number of CIV systems for 1.3 ≤ Zr ≤4.1. Both can be understood in terms of our galaxy evolution model accounting for SNI contributions which at the same time gives information about the structure of the Universe and about the IMF and star formation history in the intervening absorber galaxies. The spectrophotometric aspect of our unified model predicts spectral and photometric properties of these galaxies testable by optical identifications.

Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 421
Copyright
Copyright © Kluwer 

References

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