[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.
Cite
@article{arxiv.1511.07138,
title = {Blue outliers among intermediate redshift quasars},
author = {P. Marziani and J. W. Sulentic and G. M. Stirpe and D. Dultzin and A. Del Olmo and M. A. Martínez-Carballo},
journal= {arXiv preprint arXiv:1511.07138},
year = {2016}
}
Comments
Accepted for publication in Astrophysics and Space Science, Special Issue on Line Shifts in Astrophysics and Laboratory Plasma