Quasar massive ionized outflows traced by CIV λ1549 and [OIII]λλ4959,5007

DOI: 
10.3389/fspas.2017.00016
Publication date: 
01/09/2017
Main author: 
Marziani, Paola
IAA authors: 
Dultzin, Deborah
Authors: 
Marziani, Paola;Negrete, C. Alenka;Dultzin, Deborah;Martínez-Aldama, Mary L.;Del Olmo, Ascensión;D'Onofrio, Mauro;Stirpe, Giovanna M.
Journal: 
Frontiers in Astronomy and Space Sciences
Refereed: 
Yes
Publication type: 
Article
Volume: 
4
Pages: 
16
Abstract: 

The most luminous quasars (with bolometric luminosities are 1047 erg/s) show a high prevalence of CIV λ1549 and [OIII]λλ4959,5007 emission line profiles with strong blueshifts. Blueshifts are interpreted as due to Doppler effect and selective obscuration, and indicate outflows occurring over a wide range of spatial scales. We found evidence in favor of the nuclear origin of the outflows diagnosed by [OIII]λλ 4959,5007. The ionized gas mass, kinetic power, and mechanical thrust are extremely high, and suggest widespread feedback effects on the host galaxies of very luminous quasars, at cosmic epochs between 2 and 6 Gyr from the Big Bang. In this mini-review we summarize results obtained by our group and reported in several major papers in the last few years with an eye on challenging aspects of quantifying feedback effects in large samples of quasars.

Database: 
ADS
URL: 
https://ui.adsabs.harvard.edu/#abs/2017FrASS...4...16M/abstract
ADS Bibcode: 
2017FrASS...4...16M
Keywords: 
Galaxy evolution;quasars;Quasars: supermassive black holes;Feedback;quasars: emission lines;Outflows;Active Galactic Nuclei (AGN);Astrophysics - Astrophysics of Galaxies