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Using AGN Variability Surveys to explore the AGN-Galaxy Connection

Published online by Cambridge University Press:  25 July 2014

Vicki L. Sarajedini
Vicki L. Sarajedini*
Affiliation:
Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FLUSA email: vicsaraj@ufl.edu
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Abstract

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Variability is a successful technique used to identify active galactic nuclei in both ground and space-based galaxy surveys. Optical variability surveys using HST have uncovered a number of AGN in deep extragalactic fields extending to z ~ 3 and probing intrinsically faint sources. Mid-IR variability surveys using Spitzer have identified a significant number of AGN and are particularly sensitive to obscured sources. Many variability-detected AGN are not strong X-ray sources or lack the characteristic colors of AGN and would thus be unidentified using other selection techniques. In this conference proceedings, I discuss the nature of the variable sources and their host galaxies identified in deep extragalactic optical and mid-IR surveys.

Keywords

galaxies:activegalaxies: evolutionsurveys
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S304: Multiwavelength AGN Surveys and Studies , October 2013 , pp. 385 - 390
Copyright
Copyright © International Astronomical Union 2014 

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