Kang-Shian Pan(NCU), Win-Huen Ip(NCU), Alberto Cellino(INAF)
A joint Taiwan-Torino polarimetric survey of the Barbarian asteroids with anomalous polarization behavior at large phase angles ($\alpha$) is proposed. The CAI-rich Barbarians might provide key information on the formation processes of the solar system and the collisional history of the asteroid belt. We use the Triple Range Imager and Polarimeter (TRIPOL) on the one-meter (LOT) telescope on Lulin Observatory to measure the long-term phase-polarization curve which would be an important step in the exploration and understanding of this new class of very ancient asteroids. The report show the preliminarily observation result of Barbarian asteroids, (437) Rhodia and (824) Anastasia, by TRIPOL observation in this summer.