Elemental Abundances at Early times : the Nature of Damped Lyman-alpha Systems

Abstract

The distribution of element abundances with redshift in Damped Lyα (DLA) systems can be adequately reproduced by the same model reproducing the halo and disk components of the Milky Way Galaxy at different galactocentric distances: DLA systems are well represented by normal spiral galaxies in their early evolutionary stages. 

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