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Subaru Seminars are
usually held in Room 104 of the Hilo Base Facility, adjacent
to the main lobby. Everyone is welcome to attend. If you would like to
give a seminar, please contact Subaru seminar organizers
(Thayne Currie, Tae-Soo Pyo, Nagayoshi Ohashi)
by email : sseminar_at_subaru.naoj.org (please change"_at" to @).
August 2, Wednesday, 11am in 104A
" The life-cycle of gas in dying galaxies
"
Katherine Alatalo (Carnegie Obs)
Modern day galaxies populate a bimodal distribution, in both
morphology and color space. Their morphological and color properties
are also inter-related, with lenticular and elliptical galaxies
usually exhibiting red colors and spiral galaxies usually exhibiting
blue colors. In color space, there is a genuine dearth of
intermediate colored galaxies, suggesting that the transition a galaxy
undergoes to transform must be rapid, and quenching galaxies, rare.
Gas - its presence, absence, and mechanics - serves as the anchor of a
galaxy's transformation from blue to red. I will discuss the nature of
gas in transitioning and transitioned galaxies through two lenses: (1)
How a galaxy transition is able to impact the behavior of molecular
gas, and (2) how new observations of molecular gas in quenching and
quenched galaxies has recast our understanding of how they ultimately
metamorphose from blue, star-forming spirals into red, quiescent
ellipticals and lenticulars.
Seminars are also held at JAC,
CFHT,
and IfA.
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