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Planetary and Space Science
Volume 212, 2022, 105412

Polarimetric observations of asteroids of different taxonomic classes from Lulin Observatory in Taiwan

Kang-Shian Pana, Wing-Huen Ipa,b

Graduate Institute of Astronomy, National Central University, Taoyuan City, 32001, Taiwan.

Abstract

Polarimetric measurements are a powerful tool in studying compositions and structures of dust layers of asteroids and other solar system objects. A pilot project was carried out using the Triple Range Imager and Polarimeter (TRIPOL) on Lulin 1-m (LOT) telescope at Lulin Observatory to obtain instrument characteristics essential to polarimetric diagnostics of asteroids. A comparison of the TRIPOL results with previous work from the measurements of a number of standard unpolarized, polarized stars, and 29 main-belt asteroids with known taxonomic types (B-, C-, S-, and M-type) shows that a long-term program of polarimetric observations of asteroids has a promising prospect at Lulin Observatory.

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