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Paper: Luminous Buried AGNs in the Local Universe
Volume: 373, The Central Engine of Active Galactic Nuclei
Page: 612
Authors: Imanishi, M.
Abstract: We present infrared L-band (3–4 μm) nuclear spectra of a large sample of nearby ultraluminous infrared galaxies (ULIRGs). Using the 3.3 μm polycyclic aromatic hydrocarbon (PAH) emission and absorption features found at 3–4 μm, we search for signatures of optically elusive powerful active galactic nuclei (AGNs) deeply buried in dust in all directions. The signatures of powerful buried AGNs are found in about 50% of the observed ULIRGs classified optically as “non-Seyferts.”
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