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A study of optical/IR selected AGNs with SDSS and WISE

Published online by Cambridge University Press:  25 July 2014

Li Shao
Li Shao*
Affiliation:
Max Planck Institute for Astrophysics, Karl-Schwarzschild-Str. 1, 85748, Garching, Germany email: lishao@mpa-garching.mpg.de
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Abstract

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We analyze a sample of 30,000 nearby obscured AGNs with SDSS and WISE. We use a “pair-matching” technique to subtract the host 4.6μm contribution, with the aid of SDSS data. By combining Seyferts with local SDSS quasars, we show that the [Oiii] and the intrinsic AGN 4.6μm luminosities correlate roughly linearly over 4 orders of magnitude, despite of large scatter. We also compare the partition functions of the total integrated 4.6μm and [Oiii] line luminosities from Seyferts and IR-bright LINERs, as function of a variety of host galaxy properties. The result suggests the optical and the IR selected AGNs represent the same galaxy population. We further study the environment of the AGNs, finding a link between the IR nuclear emission and the galaxy interaction.

Keywords

galaxies: activegalaxiesnucleiinfrared: galaxies
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 213 - 216
Copyright
Copyright © International Astronomical Union 2014 

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