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Blue outliers among intermediate redshift quasars

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arxiv 1511.07138 v1 pith:PDDYC2RF submitted 2015-11-23 astro-ph.GA

Blue outliers among intermediate redshift quasars

classification astro-ph.GA
keywords bluelambdaoutliersquasarsintermediateoiiiactiveappear
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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[Oiii]{\lambda}{\lambda}4959,5007 "blue outliers" -- that are suggestive of outflows in the narrow line region of quasars -- appear to be much more common at intermediate z (high luminosity) than at low z. About 40% of quasars in a Hamburg ESO intermediate-z sample of 52 sources qualify as blue outliers (i.e., quasars with [OIII] {\lambda}{\lambda}4959,5007 lines showing large systematic blueshifts with respect to rest frame). We discuss major findings on what has become an intriguing field in active galactic nuclei research and stress the relevance of blue outliers to feedback and host galaxy evolution.

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