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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 : (please change"_at" to @).

July 25, Monday, 11 am in 104

" Constraining the spin of Sgr A* via the motion of the S stars "

Yohsuke Takamori

(Wakayama National College of Technology)

From astrometric and spectroscopic observations in the galactic center, we can see stars, which are called the S stars, moving around Sgr A*. The motion of the S stars tell us the mass of Sgr A* and it is about 4 million times masses of the sun. While we know the mass of the SgrA*, we do not know well about its spin. In this talk, we assume that the metric around the Sgr A* is the Kerr metric and constrain the spin parameter including the over-spinning region by the motion of the S stars.

Seminars are also held at JAC, CFHT, and IfA.

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