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Goto, M. Hayashi, M. Honda, M. Ishii, M. Iye, M. Janson, M. Kuzuhara, M. Momose, M. Sitko, M. Takami, M. Tamura, M. Watanabe, M. W. McElwain, N. Kusakabe, N. Ohashi, N. Takato, O. Guyon, R. Dong, R. Kandori, R. Russell, R. Suzuki, S. Egner, S. Hayashi, S. Inutsuka, S. Mayama, S. Miyama, T. Brandt, T. Currie, T. Fukue, T. Henning, T. Kudo, T. Matsuo, T. Muto, T. Nishimura, T.-S. Pyo, T. Takeuchi, T. Usuda, T. Yamada, W. Brandner, Y. Hayano, Y. Okamoto","submitted_at":"2012-02-28T07:45:01Z","abstract_excerpt":"We present high-resolution, H-band, imaging observations, collected with Subaru/HiCIAO, of the scattered light from the transitional disk around SAO 206462 (HD 135344B). Although previous sub-mm imagery suggested the existence of the dust-depleted cavity at r~46AU, our observations reveal the presence of scattered light components as close as 0.2\" (~28AU) from the star. Moreover, we have discovered two small-scale spiral structures lying within 0.5\" (~70AU). 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