NASA NTRS · 20210022363
Initial Analysis of Volatile Components in the Hayabusa2 Samples
Abstract
The major objectives of the Hayabusa2-initial-analysis volatile team are (1) to determine the pristine volatile components in the parental materials of the returned Ryugu samples, and (2) to elucidate the origin and chronological history of the asteroid Ryugu, as well as the evolution of the solar system through determination of volatile carrier phases and abundances of volatile components (e.g., presolar grain abundances). Our analytical data will be linked with remote sensing (NIRS3, ONCs, TIR, and LIDAR) data and theoretical modeling [e.g., 1-5]. For example, the erosion rate and the degree of gardening of the surface layer of the asteroid Ryugu can be estimated based on trapped solar wind (SW) and cosmic ray produced (cosmogenic) nuclides, which will be discussed in conjunction with the results based on the remote sensing data [3-5]. Taken together, these will provide characteristics of the surface materials, such as the degree and duration of the alteration by SW/cosmic ray irradiation and micrometeorite bombardments.
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Ryuji Okazaki, Bernard Marty, Henner Busemann, Yayoi N Miura, Keita Yamada, Saburo Sakai, Ko Hashizume, Kenichi Bajo, Shun Sekimoto, Fumio Kitajima, Kevin Righter, Alex Meshik, Jamie Gilmour, Naoyoshi Iwata, Evelyn Furi, Sarah Crowther, Naoki Shirai, Mitsuru Ebihara, Yoshinori Takano, Akizumi Ishida, Reika Yokochi, Olga Pravdivtseva, Jisun Park, Toru Yada, Kunihiko Nishiizumi, Keisuke Nagao, Jong Ik Lee, Michael Broadley, David Byrne, My Riebe, Patricia Clay, Akihiro Kano, Marc Caffee, Shinsuke Kawagucci, Yohei Matsui, Ryu Uemura, Makoto Inagaki, Daniela Krietsch, Colin Maden, Mizuki Yamamoto, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Hiroshi Naraoka, Hikaru Yabuta, Kanako Sakamoto, Shogo Tachibana, Sei-ichiro Watanabe, Yuichi Tsuda. Initial Analysis of Volatile Components in the Hayabusa2 Samples. https://ntrs.nasa.gov/citations/20210022363
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