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QSO absorption-line systems and star formation

Published online by Cambridge University Press:  07 August 2017

Ruth B. Gruenwald ,
Sueli M. Viegas  and
Gustavo Detthow
Ruth B. Gruenwald
Affiliation:
Instituto Astronômico e Geofísico, Brazil
Sueli M. Viegas
Affiliation:
Instituto Astronômico e Geofísico, Brazil
Gustavo Detthow
Affiliation:
Instituto Astronômico e Geofísico, Brazil

Extract

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The properties of the QSO absorbing systems have been established by several large scale surveys. Observational results concerning the metal content, the distribution of the systems as a function of the redshift, and clustering, lead to two populations of intervening objects: (a) intergalactic clouds (Ly α systems), and (b) galaxies (heavy-element systems). More recently, observations have shown an analogy between QSO absorbers and gas-rich dwarf galaxies (York et al. 1990).

Type
Poster Papers
Information
Symposium - International Astronomical Union , Volume 149: The Stellar populations of Galaxies , 1992 , pp. 427
Copyright
Copyright © Kluwer 

References

Viegas, S. M. and Gruenwald, R. B. 1991, ApJ, 377, 39.Google Scholar
York, D. G., Caulet, A., Rybskii, P., Gallagher, J., Blades, J. C., Morton, D. C. & Wamstecker, W. 1990, ApJ, 351, 412.Google Scholar