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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
(Tomonori Usuda, Kumiko S. Usuda, Naoyuki Tamura)
by email : sseminar_at_subaru.naoj.org (please change"_at" to @).
March 5th, Friday, at 2:00 pm
" Eta Carinae Superstar "
Kenji Hamaguchi
(NASA/GSFC & UMBC)
Eta Carinae is the best studied supermassive star on the way to end
its life as a supernova or hypernova explosion and/or a gamma-ray
burst. Intensive multi-wavelength observations since the late 1990's
uncovered evidence of a binary system at the core of the bipolar
envelope ejected in the Great Eruption of the 1840's. However, the
characteristics of the two stellar components are not well constrained
as they are deeply cloaked in their massive interacting winds. I
introduce the latest picture of Eta Carinae obtained from an observing
campaign heavily focused on 2003 and 2008-9 observing seasons,
coincident with the two most recent periastron passages.