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

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  • URLhttps://db.koreascholar.com/Article/Detail/389920
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천문학논총 (Publications of the Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

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.

목차
ABSTRACT
1. INTRODUCTION
2. RESULTS AND DISCUSSION
REFERENCES
저자
  • K. MATSUTA(Department of Space and Astronautical Science, The Graduate University for Advanced Studies, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
  • P. GANDHI(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
  • T. DOTANI(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Department of Space and Astronautical Science, The Graduate University for Advanced Studies)
  • T. NAKAGAWA(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
  • N. ISOBE(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency)
  • Y. UEDA(Department of Astronomy, Kyoto University)
  • K. ICHIKAWA(Department of Astronomy, Kyoto University)
  • Y. TERASHIMA(Department of Physics, Ehime University)
  • S. OYABU(Graduate School of Science, Nagoya University)
  • I. YAMAMURA(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Department of Space and Astronautical Science, The Graduate University for Advanced Studies)
  • L. STAWARZ(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Astronomical Observatory, Jagiellonian University)