Gas around DESI quasars shows metal absorption that declines with redshift and radius, with an FeII/MgII ratio that grows toward low redshift, indicating progressive metal enrichment.
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The Cosmic Evolution and Spatial Distribution of Multiphase Gas associated with QSOs
Gas around DESI quasars shows metal absorption that declines with redshift and radius, with an FeII/MgII ratio that grows toward low redshift, indicating progressive metal enrichment.