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
(Tae-Soo Pyo, Sherry Yeh, Nagayoshi Ohashi)
by email : sseminar_at_subaru.naoj.org (please change"_at" to @).
March 04, Friday, 11:00 am in 104
" Investigation of the Coevolution between Supermassive Blackholes
and Galaxies at Redshift 3 through Subaru Near-Infrared Observations "
In the local universe, the tight correlation between galaxy spheroidal
stellar mass (Msph) and their central SMBH mass (MBH) was found
by previous studies (MBH/Msph ~ 0.0015), suggesting co-evolution
between galaxies and SMBHs. To reveal galaxy and SMBH formation
mechanisms, one of the keys is exploring the redshift evolution of
MBH/Msph ratio, and we have been carried out near-IR observations
of z ~ 3 QSOs.
MBH was derived by the most reliable Hβ method which uses Hβ (4861Å)
emission line width and AGN continuum luminosity at 5100Å.
For Msph, multi-band (J (1.2μm), K'-band (2.2μm)) near-IR imaging
method is adopted to obtain accurate Msph.
To subtract bright AGN glare accurately for obtaining host galaxy light,
we established our original analysis method.
We derived MBH for 28 z ~ 3 QSOs, and also derived Msph for 9 out of
28 QSOs, and we found that MBH/Msph at z ~ 3 is larger
(MBH/Msph(median)~0.046) than the local relation (MBH/Msph ~ 0.0015).
Seminars are also held at JAC,