WHAT CONTROLS THE Fe II STRENGTH IN ACTIVE GALACTIC NUCLEI?

• Published in: The Astrophysical journal Vol. 736; no. 2; pp. 86 - jQuery1323905330645='48'
• Main Authors: Dong, Xiao-Bo, Wang, Jian-Guo, Ho, Luis C., Wang, Ting-Gui, Fan, Xiaohui, Wang, Huiyuan, Zhou, Hongyan, Yuan, Weimin
• Format: Journal Article
• Language: English
• Published: Bristol IOP 01.08.2011
• Subjects: Astronomy; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; CORRELATIONS; COSMIC RADIO SOURCES; Earth, ocean, space; ELECTROMAGNETIC RADIATION; ELEMENTS; EMISSION; Exact sciences and technology; GALAXIES; GALAXY NUCLEI; IRON; METALS; QUASARS; RADIATIONS; SEYFERT GALAXIES; TRANSITION ELEMENTS; ULTRAVIOLET RADIATION; Black holes; Equivalent width; Luminosity; Column density; Accretion disks; Continuum; Light emission; galaxies: active; Active galaxy nuclei; Galaxy nuclei; Abundance ratio; Chemical evolution; Emission line; Sky surveys; Quasars; quasars: emission lines; quasars: general; Accretion; Line formation; Line widths; Active galaxies; Line intensity; line: formation; Correlations; Physical parameter; Cosmology; Seyfert 1 galaxies

We used a large, homogeneous sample of 4178 z <= 0.8 Seyfert 1 galaxies and QSOs selected from the Sloan Digital Sky Survey to investigate the strength of Fe II emission and its correlation with other emission lines and physical parameters of active galactic nuclei. We find that the strongest cor...