천문학논총 (Publications of The Korean Astronomical Society)

  • 제27권4호
  • /
  • Pages.291-292
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  • 2012
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  • 1225-1534(pISSN)
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  • 2287-6936(eISSN)
한국천문학회 (The Korean Astronomical Society)
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SED DECOMPOSITION OF INFRARED-LUMINOUS GALAXIES

  • Lee, Jong Chul (Department of Physics and Astronomy, Seoul National University)
  • 투고 : 2012.07.02
  • 심사 : 2012.08.17
  • 발행 : 2012.09.16
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초록

We select infrared-luminous galaxies by cross-matching the SDSS spectroscopic sample of galaxies with the WISE all-sky survey catalog. Based on photometric data points covering from SDSS u-band to WISE $22{\mu}m$, their spectral energy distributions (SEDs) are separated into AGN, elliptical, spiral, and irregular galaxy components. The derived luminosities of spiral galaxy and AGN are well correlated with $H{\alpha}$ and [OIII] line luminosities, respectively. Most galaxies are dominated by young stellar populations even for optical AGNs, but at least 10% of optical non-AGNs appear to harbor buried AGNs. The AGN contribution increases dramatically with the total luminosity. These results show that the SED decomposition is successful and is useful to understand the true nature of dusty galaxies.

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참고문헌

  1. Assef, R. J., et al., 2010, Low-Resolution Spectral Templates for Active Galactic Nuclei and Galaxies from 0.03 to 30 ${\mu}m$, ApJ, 713, 970 https://doi.org/10.1088/0004-637X/713/2/970
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피인용 문헌

  1. GALAXY EVOLUTION IN THE MID-INFRARED GREEN VALLEY: A CASE OF THE A2199 SUPERCLUSTER vol.800, pp.2, 2015, https://doi.org/10.1088/0004-637X/800/2/80