UV-Visible Reflectance Spectra of Grains Returned from 162173 Ryugu Unexposed to Earth's Atmosphere

Amanda R Hendrix1, Faith Vilas2, Camilo JaramilloCorrea3, Neil Pearson4, Mike E Zolensky5, Deborah L Domingue1, Roger Nelson Clark4, Jean Paul Allain3, Tomoki Nakamuna6, Moe Matsuoka7, Kana Amano6, Tomoyo Morita8, Mizuha Kikuiri9, Hiroshi Naraoka10, Kanako Sakamoto7, Eiichi Kagawa6, Hisayoshi Yurimoto11, Takaaki Noguchi12, Ryuji Okazaki13, Hikaru Yabuta14, Shogo Tachibana15, Seiichiro Watanabe16 and Yuichi Tsuda17, (1)Planetary Science Institute, Tucson, AZ, United States, (2)Planetary Science Institute Tucson, Tucson, AZ, United States, (3)Pennsylvania State University Main Campus, Nuclear Engineering, University Park, PA, United States, (4)Planetary Science Institute Tucson, Tucson, United States, (5)NASA Johnson Space Center, Houston, TX, United States, (6)Tohoku University, Sendai, Japan, (7)ISAS/JAXA, Sagamihara, Japan, (8)Tohoku Univ, Sendai, Japan, (9)Tohoku Univ., Sendai, Japan, (10)Kyushu Univ, Fukuoka, Japan, (11)Hokkaido University, Division of Earth and Planetary Sciences, Sapporo, Japan, (12)Kyoto University, Kyoto, Japan, (13)Kyushu Univeristy, Fukuoka, Japan, (14)Hiroshima University, Higashi-Hiroshima, Japan, (15)Hokkaido Univ., Sapporo, Japan, (16)Nagoya Univ., Nagoya, Japan, (17)JAXA, Sagamihara, Japan