• 제목/요약/키워드: AKARI: WISE: infrared galaxies

검색결과 11건 처리시간 0.016초

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

  • Matsuta, K.;Gandhi, P.;Dotani, T.;Nakagawa, T.;Isobe, N.;Ueda, Y.;Ichikawa, K.;Terashima, Y.;Oyabu, S.;Yamamura, I.;Stawarz, L.
    • 천문학논총
    • /
    • 제27권4호
    • /
    • pp.285-286
    • /
    • 2012
  • 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.