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 @).
November 29, Tuesday, at 11:00 am
" Probing Cosmic Metallicity Evolution with Gravitationally Lensed Galaxies "
(IfA, Univ of Hawaii)
Heavy element abundance provides a fossil record of galaxy formation and evolution.
Metallicity is a crucial parameter to constrain the feedback processes in galaxies
such as galactic-scale winds and gas inflows. However, because of the requirement of
high S/N spectra, metallicity is a very difficult quantity to obtain at high redshift,
especially in the so-called redshift desert of 1 < z < 3. The current best method to
obtain metallicity at high redshift is to use strong gravitationally lensed galaxies.
In this talk, I will present the first results of our lensing survey into the
metallicity properties of star-forming galaxies, based on our MOIRCS/Subaru observations.
The powerful magnification of gravitational lensing also allows us to obtain spatially
resolved metallicity for a few galaxies at high-z. I will discuss the implications for
disk formation scenarios from these spatially resolved galaxies.
Seminars are also held at JAC,