(Proposal ID) S11A-028

(PI) Matsuoka, Yoshiki

(Proposal Title)
The First Systematic Survey of Extended Emission-Line Regions around Quasars

(Abstract)
We propose to carry out the first systematic survey of extended emission-line 
regions (EELRs) around quasars with the Suprime-Cam narrow- and broad-band 
filters. EELRs are composed of massive ionized gas with the spatial extent of 
a few times 10 kpc, which are often beyond quasar host galaxies. The previous 
studies have found that the presence of luminous EELRs are related to at least 
one of the quasar properties, most likely the mass of central super-massive 
black holes (SMBHs). This direct relation between SMBHs and the super-kpc 
structure of host galaxies is of particular interest, since it invokes the 
current discussions about AGN feedback as a key component of the co-evolution 
of galaxies and SMBHs. limits and the narrow dynamic ranges of deducing the 
firm conclusions. In the proposed observation, we search for EELRs, to the 
unprecedented depths, around a well-defined quasar sample with the wide ranges 
of SMBH mass and radio loudness, as well as explore the large-scale (a few 
Mpc) surrounding environments of the quasars with and without EELRs. Through 
the detailed analysis of the condition for the emergence of EELRs, we aim to 
reveal the nature of EELRs, and eventually obtain an observational constraint 
on the AGN feedback process to host galaxy evolution.