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THE 3.3 MICRON PAH EMISSION OF THE MID-INFRARED EXCESS GALAXIES DISCOVERED BY THE AKARI MID-INFRARED ALL-SKY SURVEY

  • Yamada, R. (Graduate school of science, Nagoya University) ;
  • Oyabu, S. (Graduate school of science, Nagoya University) ;
  • Kaneda, H. (Graduate school of science, Nagoya University) ;
  • Yamagishi, M. (Graduate school of science, Nagoya University) ;
  • Ishihara, D. (Graduate school of science, Nagoya University) ;
  • Kim, J.H. (Department of Physics and Astronomy, Seoul National University) ;
  • Im, M. (Department of Physics and Astronomy, Seoul National University) ;
  • Toba, Y. (Institute of Space and Astronomical Science, Japan Aerospace Exploration Agency) ;
  • Matsuhara, H. (Institute of Space and Astronomical Science, Japan Aerospace Exploration Agency)
  • Received : 2012.07.01
  • Accepted : 2012.08.12
  • Published : 2012.09.16
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Abstract

We investigate the relation between star formation activity and PAH $3.3{\mu}m$ emission. Our targets are mid-infrared-excess galaxies selected from the AKARI all-sky survey point source catalog. We performed AKARI near-infrared spectroscopy for them. As a result, we obtained $2.5-5{\mu}m$spectra of 79 galaxies, and selected 35 star-forming galaxies out of them. Comparing the PAH $3.3{\mu}m$ luminosities with the infrared luminosities, we find a linear correlation between them. However, by adding the results from literatures for luminous infrared galaxies and ultra-luminous infrared galaxies that are more luminous than our sample, the ratio of the PAH to the infrared luminosity is found to decrease towards the luminous end.

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References

  1. Imanishi, M., et al., 2008, Systematic Infrared 2.5- 5 ${\mu}m$ Spectroscopy of Nearby Ultraluminous Infrared Galaxies with AKARI, PASJ, 60, S489
  2. Imanishi, M., et al., 2010, AKARI IRC Infrared 2.5-5 ${\mu}m$ Spectroscopy of a Large Sample of Luminous Infrared Galaxies, ApJ, 721, 1233 https://doi.org/10.1088/0004-637X/721/2/1233
  3. Moorwood, A. F. M., 1986, 3.28 Micron Feature and Continuum Emission in Galaxy Nuclei, A&A, 166, 4
  4. Mouri, H., et al., 1990, A Relation between H2 V = 1-0 S(1) and 3.28 Micron Emission in Seyfert and Starburst Galaxies, ApJ, 356, L39 https://doi.org/10.1086/185745
  5. Oyabu, S., et al. 2011, AKARI Detections of Hot Dust in Luminous Infrared Galaxies. Search for Dusty Active Galactic Nuclei, A&A 529, 122 https://doi.org/10.1051/0004-6361/201014221
  6. Sanders, D. B. & Mirabel, I. F., 1996, Luminous Infrared Galaxies, ARA&A, 34, 749 https://doi.org/10.1146/annurev.astro.34.1.749