A cross-correlation analysis of active galactic nuclei and galaxies using virtual observatory: Dependence on virial mass of supermassive black hole

Abstract

We present results of the cross-correlation analysis between active galactic nuclei (AGNs) and galaxies at redshift 0.1-1.We obtain data of ∼ 10,000 Sloan Digital Sky Survey AGNs in which their virial masses with a supermassive black hole (SMBH) were estimated. The UKIDSS galaxy samples around the AGNs were obtained using the virtual observatory. The scale length of AGN-galaxy cross-correlation for all of the samples is measured to be r 0 = 5.8+0.8-0.6 h-1 Mpc (for the fixed slope parameter γ = 1.8).We also derived a dependence of r 0 on the BH mass, MBH, and found an indication of an increasing trend of r0 at MBH 108M-. It is suggested that the growth of SMBHs is mainly driven by interactions with the surrounding environment for M BH ≥ 108 M⊙. On the other hand, atMBH ≲ 108 M⊙, we did not find the BH mass dependence. This would imply that for less massive BHs, the mass growth process can be different from that for massive BHs. © 2013. The American Astronomical Society. All rights reserved.