2003ApJ...590L..49F

We present 0".1 resolution near-infrared imaging of Herbig Ae star HD 150193 (∼6 Myr) and its T Tauri companion with the stellar coronagraphic camera (Coronagraphic Imager with Adaptive Optics) on the Subaru 8.2 m telescope. The images obtained reveal a circumstellar disk around the primary star extending from the edge of the coronagraphic mask at 50 AU to about 190 AU (1".3). No circumstellar structure was detected around the companion, which was separated by 165 AU (1".10) from the primary. For the circumprimary disk, the lower limit of the ratio between the disk and the total flux is estimated to be 1.3x10^–2. Asymmetries are seen in the surface brightness of this disk. Azimuthal asymmetry of the radial profile suggests that the companion has an effect on the distortion of the circumprimary disk. HD 150193 provides insight into the disk evolutionary process in binary systems.