Environmental dependence of the presence of active galactic nuclei (AGNs) in the volume-limited Main galaxy samples of SDSS DR6

• Published in: Astronomische Nachrichten Vol. 333; no. 8; pp. 767 - 773
• Main Authors: Deng, X.-F., Xin, Y., Wu, P., Jiang, P., Ding, Y.-P., Qi, X.-P.
• Format: Journal Article
• Language: English
• Published: Berlin WILEY-VCH Verlag 01-10-2012; WILEY‐VCH Verlag; Wiley Subscription Services, Inc
• Subjects: Active galactic nuclei; Astronomical bodies; Correlation; Density; Digital; galaxies: active; galaxies: statistics; Sky surveys (astronomy); Stellar mass
• ISSN: 0004-6337; 1521-3994
• DOI: 10.1002/asna.201111696

Using two volume‐limited Main galaxy samples of the Sloan Digital Sky Survey Data Release 6 (SDSS DR6) above and below the value of M∗︁r, we have explored the environmental dependence of the AGN fraction. It is found that the fraction of AGNs declines substantially with increasing local density in the luminous volume‐limited sample, but in the faint volume‐limited sample this change is very weak. We also note that the presence of AGNs is not correlated with the stellar mass (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)