Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..418..217i&link_type=abstract
AKARI, a Light to Illuminate the Misty Universe ASP Conference Series, Vol. 418, proceedings of a conference held 16-19 February
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of our systematic infrared 2.5-35 μm low-resolution spectroscopy of ultraluminous infrared galaxies (ULIRGs), using Subaru, AKARI, and Spitzer. We detected the signatures of optically-elusive, but intrinsically luminous, buried AGNs in a significant fraction of ULIRGs classified optically as non-Seyferts. The energetic importance of buried AGN increases with increasing galaxy infrared luminosity, which may support the widely-proposed AGN feedback scenario as the origin of the galaxy downsizing phenomenon.
Imanishi Masatoshi
Nakagawa Takao
Ohyama Yoichi
Onaka Takashi
Shirahata Mai
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