Tsukagoshi, T., Momose, M., Hashimoto, J., kudo, T., Andrews, S., Ohashi, N., Kitamura, Y., Saito, M., Wilner, D., Tamura, M., and Kawabe, R. 2013. "Submillimeter and Near Infrared Studies for the Evolved Transition Disk around Sz 91." from Astronomical Society of the Pacific Conference Series. 476, 391.
We performed aperture synthesis 345 GHz continuum and CO(3-2) observations with SMA and Ks-band polarized intensity imaging with the Subaru telescope for a transition disk around class III object in Lupus, Sz 91. Our observations successfully resolved the dust disk with a radius of 170 AU and unveiled the inner hole with a radius of 65 AU. In addition, we found the rotating gas disk with a radius of 260 AU in the CO(3-2) line. The model fitting to the spectral energy distribution reveals that the disk contains a mass of 2.2×10-3⊙ in the cold outer part of the disk, and a small amount (≥ 10-6 MJup) of warm dust (≥ 150 K) remains in the inner hole of the disk. The structure of the hot component could be interpreted by either a self-luminous emitting body (e.g., circumplanetary disk) or a ring in the inner hole of the disk.
