A CROSS-CORRELATION ANALYSIS OF ACTIVE GALACTIC NUCLEI AND GALAXIES USING VIRTUAL OBSERVATORY: DEPENDENCE ON VIRIAL MASS OF SUPERMASSIVE BLACK HOLE

作者：Komiya Yutaka^*; Shirasaki Yuji; Ohishi Masatoshi; Mizumoto Yoshihiko

来源：Astrophysical Journal, 2013, 775(1): 43.

DOI：10.1088/0004-637X/775/1/43

• astronomical databases: miscellaneous
• galaxies: active
• large-scale structure of universe
• quasars: general
• virtual observatory tools

We present results of the cross-correlation analysis between active galactic nuclei (AGNs) and galaxies at redshift 0.1-1. We obtain data of similar to 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(-0.6)(+0.8) h(-1) Mpc (for the fixed slope parameter gamma = 1.8). We also derived a dependence of r(0) on the BH mass, M-BH, and found an indication of an increasing trend of r(0) at M-BH > 10(8) M-circle dot. It is suggested that the growth of SMBHs is mainly driven by interactions with the surrounding environment for MBH > 10(8) M-circle dot. On the other hand, atM(BH) less than or similar to 10(8) M-circle dot, 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.

• 出版日期2013-9-20
• 单位中国科学院国家天文台