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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 Masayuki Akiyama by email.

Tuesday 25 February at 13:30pm

"Can we understand how our Galaxy formed by looking at 6Li in old halo stars ?"

Susumu Inoue (Max-Planck-Institut fuer Astrophysik, Germany)

We discuss the production of the element $^6$Li in the early Galaxy by cosmic rays accelerated at structure formation shocks, driven by the hierarchical merging of sub-Galactic halos during Galaxy formation. This picture can give a better account of the $^6$Li observed to date in metal-poor halo stars, compared to previous models based on cosmic rays from supernovae. The $^6$Li abundance is predicted to show a distinctive evolutionary behavior not directly related to CNO or Fe, as well as interesting correlations between the stellar kinematical properties, which should be clearly testable with further observations. Detailed studies may also provide us with unique and critical insight into how the structure of our Galaxy formed and evolved. The prospects for achieving these goals using the Subaru HDS are discussed.


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



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