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Implications of Early Cooling Flows and Galactic Winds for the Evolution of Deuterium

Published online by Cambridge University Press:  25 May 2016

Amancio C. S. Friaça
Amancio C. S. Friaça*
Affiliation:
Institute Astronômico e Geofísico, USP, Brazil

Abstract

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The deuterium abundances in high-redshift QSO absorption-line systems could be an important constraint in models of galaxy formation. Here we investigate the role of galactic winds and massive cooling flows present during the formation of galaxies on the evolution of deuterium abundance. Destruction factors are calculated and the time and spatial scales for the dispersal through galactic winds of the processed deuterium-depleted gas are presented and related to the D/H determinations for QSO absorption-line systems. The calculations are derived from a chemodynamical model within a scenario in which the absorbers are located inside the hot halo of a young galaxy.

Type
7. Evolution of the Light Elements
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 535 - 539
Copyright
Copyright © Astronomical Society of the Pacific 2000 

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