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Paper: Narrow Absorption Line Outflows in High-Redshift Quasars
Volume: 460, AGN Winds in Charleston
Page: 52
Authors: Simon, L. E.; Hamann, F.; Pettini, M.
Abstract: We discuss results from a survey of narrow absorption lines (NALs) in high-resolution spectra of 24 high-redshift quasars. We identify NALs that are intrinsic to quasar environments based on partial covering of the background light source and, secondarily, broad rounded line profiles. The intrinsic lines tend to be stronger and broader, with larger CIV column densities, compared to other NALs with intervening or ambiguous origins. The large velocity shifts of many intrinsic lines, v > 2500 km s-1, clearly indicate an origin in quasar outflows. We describe some interesting individual cases, including very large outflow velocities up to ∼39,300 km s-1, and rich multi-component NAL complexes that also appear to have an outflow origin.
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