your ID: 0064 
First Name: Tohru 
Last Name: Nagao 
Affiliation: National Astronomical Observatory of Japan 
Title: Metallicity Evolution of Active Galactic Nuclei 
Authors: Tohru Nagao, Roberto Maiolino, Alessandro Marconi 
Topic: 9 
Session: oral 
Abstract: We present our recent analysis on the metallicity evolution of AGNs 
traced by both BLRs and NLRs. The BLR metallicity is investigated through 
the composite spectra of SDSS quasars, and the NLR metallicity is investigated 
for high-z radio galaxies.