Subaru Seminars



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The Subaru Seminar is usually held in Room 104 of the Hilo Base Facility, adjacent to the main lobby. Everyone is welcome to attend. If you are interested in giving a seminar, please contact Subaru seminar organizers (Tadayuki Kodama, Kumiko S. Usuda, Naoyuki Tamura, Tomonori Usuda) by email : sseminar_at_subaru.naoj.org (please change"_at" to @).

February 10, Thursday, at 11:00 am

" A new method to identify AGNs and the nature of low-luminosity AGNs "

Masayuki Tanaka

(IPMU, University of Tokyo)


We characterize the nature of low-luminosity AGNs with star formation rates of the host galaxies, black hole masses, and accretion rates. We develop a new method to identify AGNs using a single (or perhaps two) emission line. With this method, we can cleanly subtract emission line fluxes from star forming regions to extract pure AGN emission, which is crucial to characterize AGN activities. Our tentative results show that accretion rates increase with increasing star formation rates. This suggests that the amount of gas in galaxies may be an important parameter to characterize AGN activities, and it might provide a link between the down-sizing in galaxy star formation and the down-sizing in AGN activities.


Seminars are also held at JAC, CFHT, and IfA.



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