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The AKARI 2.5-5.0 µm Spectral Atlas of Type-1 Active Galactic Nuclei: Black Hole Mass Estimator, Line Ratio, and Hot Dust Temperature

Nakagawa, Takao; Oyabu, Shinki; Ohyama, Youichi +11 more

We present 2.5-5.0 µm spectra of 83 nearby (0.002 < z < 0.48) and bright (K < 14 mag) type-1 active galactic nuclei (AGNs) taken with the Infrared Camera on board AKARI. The 2.5-5.0 µm spectral region contains emission lines such as Brβ (2.63 µm), Brα (4.05 µm), and polycyclic aromatic hydrocarbons (3.3 µm), …