[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5303/PKAS.2012.27.4.285

INFRARED AND HARD X-RAY DIAGNOSTICS OF AGN IDENTIFICATION FROM THE AKARI AND SWIFT/BAT ALL-SKY SURVEYS

Matsuta, K. (Department of Space and Astronautical Science, The Graduate University for Advanced Studies)
Gandhi, P. (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
Dotani, T. (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
Nakagawa, T. (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
Isobe, N. (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
Ueda, Y. (Department of Astronomy, Kyoto University)
Ichikawa, K. (Department of Astronomy, Kyoto University)
Terashima, Y. (Department of Physics, Ehime University)
Oyabu, S. (Graduate School of Science, Nagoya University)
Yamamura, I. (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
Stawarz, L. (Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)

Publication Information

Publications of The Korean Astronomical Society / v.27, no.4, 2012 , pp. 285-286 More about this Journal

Abstract

We combine data from two all-sky surveys, the Swift/Burst Alert Telescope 22 Month Source Catalog and the AKARI Point Source Catalogue, in order to study the connection between the hard X-ray (> 10 keV) and infrared (IR) properties of local active galactic nuclei (AGN). We find two photometric diagnostics are useful for source classification: one is the X-ray luminosity vs. IR color diagram, in which type 1 radio-loud AGN are well isolated from other AGN. The second one uses the X-ray vs. IR color-color diagram as a redshift-independent indicator for identifying Compton-thick (CT) AGN. Importantly, CT AGN and starburst galaxies in composite systems can also be separated in this plane based upon their hard X-ray fluxes and dust temperatures. This diagram may be useful as a new indicator to classify objects in new surveys such as with WISE and NuSTAR.

Keywords

galaxies: active; infrared: galaxies; X-ray: galaxies;

Citations & Related Records

Reference

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