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Statistical study of isolated and non-isolated AGNs in the Local Universe

Published online by Cambridge University Press:  21 February 2013

Nadiia Pulatova ,
Irina Vavilova  and
Peter Berczik
Nadiia Pulatova
Affiliation:
Crimean Astrophysical Observatory, Nauchnyj, AR Crimea, 98409, Ukraine email: [email protected]
Irina Vavilova
Affiliation:
Main Astronomical Observatory, NAS of Ukraine, Akademika Zabolotnogo St., 27, Kyiv, MSP-03680, Ukraine email: [email protected], [email protected]
Peter Berczik
Affiliation:
Main Astronomical Observatory, NAS of Ukraine, Akademika Zabolotnogo St., 27, Kyiv, MSP-03680, Ukraine email: [email protected], [email protected]
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Abstract

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We present the main results of statistical study of general properties of isolated AGN hosts and AGN hosts in pairs at z<0.05 as concerns with the environmental influence on the nuclear galaxy activity. With this aim we compiled the sample of 61 isolated AGNs selected from 2MIG Catalog and Catalog Veron+2010, and the sample of 109 AGNs in pairs selected from NED database.

We found a significant excess content of Sy 2 type galaxies in comparison with Sy 1 type galaxies in both samples (44% and 11% among isolated AGNs, 48% and 6% among AGNs in pairs, respectively). Isolated AGN hosts of all spectral types are located, in average, at the more far distances and have a more complicated structure than AGNs in pairs as well as they are mostly of late morphological types. Our statistical analysis shows that the observed nuclear activity of isolated 2MIG AGNs during last 3 billions years and more, first of all, is connected with the internal galaxy parameters (relative mass/size, dark/visible matter content, multi-wavelength properties of gas-dust medium in accretion disks, tor's structure, central black hole mass etc.).

Keywords

Galaxiesactive galaxy nucleiisolated galaxiesLocal Universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S290: Feeding Compact Objects: Accretion on All Scales , August 2012 , pp. 297 - 298
Copyright
Copyright © International Astronomical Union 2013

References

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