Irradiation-energy Dependence on the Spectral Changes of Hydrous C-Type Asteroids Based on 4kev and 20kev He Exposure Experiments of Murchison Cm Chondrite

• Main Authors: Amano, K., Brurnetto, R., Nakamura, T., Matsuoka, M., Lantz, C., Noguchi, T., Matsumoto, T., Nakauchi, Y., Zolensky, M. E., Matsumoto, M., Kobayashi, S.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2020
• Subjects: Lunar and Planetary Science and Exploration; Murchison; Ryugu; Tagish; Tagish Lake
• Online Access: http://hdl.handle.net/2060/20200001827

C-type asteroid 162173 Ryugu was observed by remote sensing apparatus onboard Hayabusa2 spacecraft and found to be very dark object whose reflectance is (1.60 0.15) % at 0.55m and showed a small 2.7m absorption band indicative of phyllosilicates. The optical navigation camera detected color variatio...