Mid-infrared spectroscopy of the hyperluminous infrared galaxy IRAS P09104+4109

Y. Taniguchi, Y. Sato, K. Kawara, T. Murayama, H. Mouri

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17 Citations (Scopus)


We present mid-infrared spectroscopy of the hyperluminous infrared galaxy IRAS 09104+4109 based on observations with ISOCAM CVF. We have detected the emission peak around 8 μm as well as the absorption feature around 10 μm possibly due to silicate, providing evidence for a dusty torus around the central engine. Comparing the observational results with the dusty torus model studied by Pier & Krolik (1992), we show that the most mid infrared emission comes from a compact (a few pc in radius) dusty torus although the excess far infrared emission suggests the presence of an extended dusty torus with radius of ∼ 100 pc.

Original languageEnglish
Pages (from-to)L1-L4
JournalAstronomy and Astrophysics
Issue number1
Publication statusPublished - 1997 Feb 1


  • Active galactic nuclei
  • Hyperluminous infrared galaxy (IRAS P09104+4109)
  • Infrared emission

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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