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QSO Absorption Lines: Heavy Elements and Lyman-α Clouds

Published online by Cambridge University Press:  19 July 2016

Bruce A. Peterson
Bruce A. Peterson*
Affiliation:
Mount Stromlo and Siding Spring Observatories, The Australian National University, Woden, A. C. T., 2606 Australia

Abstract

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The absorption lines in QSO spectra may be produced in material surrounding the QSO, in intergalactic clouds and in the interstellar gas of galaxies along the line of sight to the QSO. The intergalactic clouds produce weak Lyα absorption lines. The intervening galaxies produce absorption line systems with heavy element abundances and ionizations similar to the H i clouds in the halo of our galaxy. The material surrounding the QSO produces broad absorption troughs. Evidence suggests a continuity in spatial correlation and heavy element abundances for the Lyα clouds and intervening galaxies.

Type
VI. Quasars as Probes of the Intervening Medium
Information
Symposium - International Astronomical Union , Volume 119: Quasars , 1986 , pp. 555 - 561
Copyright
Copyright © Reidel 1986 

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