Quasar Massive Ionized Outflows Traced by CIV λ1549 and [OIII]λλ4959,5007

Frontiers in Astronomy and Space Sciences

DOnofrio, Mauro³  Negrete, C. Alenka⁴  Martnez-Aldama, Mary L.⁴  Marziani, Paola⁵  Dultzin, Deborah⁸  Del Olmo, Ascensin⁸  Stirpe, Giovanna M.⁹ 

[1] di Padova, Italy;Dipartimento di Fisica e Astronomia, UniversitàInstituto de AstrofíInstituto de AstronomíNational Institute for Astrophysics, Osservatorio Astronomico di Padova, Italy;Osservatorio Astronomico di Bologna (INAF), Italy;a (CSIC), Spain;a, Universidad Nacional Autonoma de Mexico, Mexico;sica de Andalucí

关键词: Galaxy evolution;    quasars;    Quasars: supermassive black holes;    Feedback;    quasars: emission lines;    Outflows;    Active Galactic Nuclei (AGN);   

DOI  :  10.3389/fspas.2017.00016

学科分类：空间科学

来源: Frontiers

【 摘 要 】

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.

【 授权许可】

CC BY