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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 14, Monday, 1pm in 104A
" Star-disk interaction on Classical T Tauri stars, and stellar feedback on star formation "
Zhen Guo (Peking University)
In the first part of my talk, I am going to introduce a two-years-long
multi-band
photometric monitoring project on Classical T Tauri stars (GI Tau). We
find evidence of star-disk interactions including disk warp extinction
(dV > 2 mag) and variable accretion process. An empirical relationship
between B-band excess luminosity and accretion luminosity is proposed
in this work. In the second part of this talk, I will present our
observation project on Subaru telescope. Star formation is an
inefficient mechanism. Only a few percent of the available gas in
molecular clouds forms stars, leading to the observed low star
formation rate. Stellar feedback is considered to be one of the major
physical mechanisms to
counteract the quick global collapse of molecular clouds. In this
talk, I will present
our recent observational analysis on selected Galactic giant molecular clouds to
understand the feedback mechanisms and its possible outcome on the subsequent
star formation properties, such as, IMF, star formation efficiency, and rate.