@inproceedings{oai:jaxa.repo.nii.ac.jp:00020605, author = {片坐, 宏一 and 岡本, 美子 and 本田, 充彦 and 山下, 卓也 and 尾中, 敬 and 渡部, 潤一 and 宮田, 隆志 and 酒向, 重行 and 藤吉, 拓哉 and 左近, 樹 and Kataza, Hirokazu and OkamotoKataza, Yoshiko and Honda, Mitsuhiko and Yamashita, Takuya and Onaka, Takashi and Watanabe, Junichi and Miyata, Takashi and Sako, Shigeyuki and Fujiyoshi, Takuya and Sakon, Itsuki}, book = {第37回月・惑星シンポジウム, Proceedings of the 37th ISAS Lunar and Planetary Symposium}, month = {Feb}, note = {Beta Pictoris is a prominent Vega like star, which has a dusty disk around the central star. This disk is supposed to be a debris dust disk, which means that the dust in the disk is recently replenished. But so far, there is no observational evidence to indicate dust replenishment. Disk spectra in the N band have been observed and the spatially resolved dust features were obtained from the disk. The feature shows ring-like small dust emission around the star. This small dust has too short life time to survive around the star, existence of the small dust means on-going dust replenishment is now taking in a place at this area. This is the first direct evidence of the dust replenishment around the Vega like star. This ring like structure is planetesimal belt like an asteroid belt in the solar system., 資料番号: AA0047898027}, pages = {103--106}, publisher = {宇宙航空研究開発機構宇宙科学研究本部, Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)}, title = {Evidence of dust replenishment zone around beta Pictoris}, year = {2004} }