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A homogeneous sample of sub-damped Lyman     systems – IV. Global metallicity evolution
Authors:Céline Péroux  Miroslava Dessauges-Zavadsky  Sandro D'Odorico  Tae-Sun Kim  Richard G McMahon
Institution:European Southern Observatory, Karl-Schwarzchild-Strasse 2, 85748 Garching-bei-München, Germany;Observatoire de Genève, 1290 Sauverny, Switzerland;Astrophysikalisches Institut Potsdam, An der Sternwarte 16, 14482 Potsdam, Germany;Institute of Astronomy, Madingley Road, Cambridge CB3 0HA
Abstract:
Keywords:galaxies: abundances  galaxies: high-redshift  quasars: absorption lines
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