(Proposal ID) S10A-021 (PI) Takeda, Yoichi (Proposal Title) Be Abundances of Solar Analogs: Toward Clarifying the Mechanism of Mixing (Abstract) Regarding the puzzling characteristics of Li abundances among solar-analog stars (i.e., their considerable diversity, the Li-deficiency of planet-host stars), we have recently concluded that stellar rotation is the most important key factor. Timely, from the theoretical side, a promising mechasnism has been proposed that slow rotators favor low Li because of an enhanced shear-induced mixing caused by differential rotation at the bottom of the convention zone. The best way to probe such a convective-radiative transition layer is to study the behavior of Be abundance along with Li, since both may be depleted below this layer at different critical temperatures. We thus decided to conduct an extensive Be abundance study on a large bona-fide sample of ~ 120 solar analogs (for which we already established the Li abundances and stellar parameters) by using the Be ii 3130/3131 lines based on the high-dispersion near-UV spectra obtained with Subaru/HDS. Our goal is to clarify whether any meaningful correlation exists between the abundances of Li and Be, and whether they show any dependence upon various stellar physical parameters. [This is a continuation of the same S09B proposal where 1(Summer) + 1(Autumn) nights were alocated, intending this time to observe the remaining winter-spring targets.]