The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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The narrow emission-line properties of radio-loud AGNs in the SDSS archive

  • Son, Donghoon (Astronomy Program, Department of Physics and Astronomy, Seoul National University) ;
  • Woo, Jong-Hak (Astronomy Program, Department of Physics and Astronomy, Seoul National University)
  • Published : 2015.04.10
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Abstract

We investigate the narrow emission-line ratios of 64 radio-loud (log $L_{1.4GHz}$ > 40) AGNs available in the SDSS archive, in order to examine whether there is a systematic difference in the accretion disk condition of radio-loud AGNs compared to radio-quiet AGNs and compact young radio-loud AGNs. The fluxes of narrow-emission lines, [O II], [Ne III], [O III], [O I], [Ar III], are measured for diagnostics. Based on the [O I]/[O III] and [Ar III]/[O III] ratios with photoionization models, we constrain the states of the accretion disk. We will present the results of the emission-line diagnostics.

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