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A RELATION BETWEEN ACTIVE BLACK HOLES AND STAR FORMATION OF LOCAL ACTIVE GALAXIES KCI 등재

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  • URLhttps://db.koreascholar.com/Article/Detail/385627
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천문학논총 (Publications of the Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

We present an analysis of the relation between star-formation (SF) and accretion luminosities of local type-2 active galactic nuclei (AGNs) at 0:01 ≤ z < 0:22. We match type-2 AGNs found in the Sloan Digital Sky Survey to current far-infrared (FIR) survey catalogues based on AKARI and Herschel. Estimating AGN luminosities from [O iii]5007 and [O i]6300 emission lines, we find a positive linear trend between FIR and AGN luminosities over a wide dynamical range. This result appears to be inconsistent with recent reports that low-luminosity AGNs show no correlation between FIR and X-ray luminosities; this contradiction is likely due to Malmquist and sample selection biases. Moreover, we also nd that pure- AGN candidates, for which the FIR radiation is thought to be AGN-dominated, show significant low-SF activities. These AGNs hosted by low-SF galaxies are rare in our sample. However, it is possible that the low fraction of low-SF AGN is caused by observational limitations, as recent FIR surveys are not suffcient to examine the population of high-luminosity AGNs hosted by low-SF galaxies.

목차
ABSTRACT
1. INTRODUCTION
2. SAMPLE AND DATA
3. RESULTS AND DISCUSSION
REFERENCES
저자
  • Kenta Matsuoka(Department of Astronomy, Kyoto University/Department of Physics and Astronomy, Seoul National University)
  • Jong-Hak Woo(Department of Physics and Astronomy, Seoul National University)
  • Hyun-Jin Bae(Department of Astronomy and Center for Galaxy Evolution Research, Yonsei University)