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1. A newly revised estimation of bulk densities and examination of the shape of individual Ryugu grains

Author

Miyazaki, Akiko, Yada, Toru, Yogata, Kasumi, Hatakeda, Kentaro, Nakato, Aiko, Nishimura, Masahiro, Nagashima, Kana, Kumagai, Kazuya, Hitomi, Yuya, Soejima, Hiromichi, Tahara, Rui, Kanemaru, Rei, Nakano, Arisa, Yoshitake, Miwa, Iwamae, Ayako, Furuya, Shizuho, Tsuchiyama, Akira, Tachibana, Shogo, Michikami, Tatsuhiro, Okada, Tatsuaki, Abe, Masanao, and Usui, Tomohiro

Published
2023
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2. A curation for uncontaminated Hayabusa2-returned samples in the extraterrestrial curation center of JAXA: from the beginning to present day

Author

Yada, Toru, Abe, Masanao, Nishimura, Masahiro, Sawada, Hirotaka, Okazaki, Ryuji, Takano, Yoshinori, Sakamoto, Kanako, Okada, Tatsuaki, Nakato, Aiko, Yoshitake, Miwa, Nakano, Yuki, Yogata, Kasumi, Miyazaki, Akiko, Furuya, Shizuho, Iwamae, Ayako S., Nakatsubo, Shunichi, Hatakeda, Kentaro, Hitomi, Yuya, Kumagai, Kazuya, Suzuki, Shino, Miura, Yayoi N., Ito, Motoo, Tomioka, Naotaka, Uesugi, Masayuki, Karouji, Yuzuru, Uesugi, Kentaro, Shirai, Naoki, Yamaguchi, Akira, Imae, Naoya, Naraoka, Hiroshi, Yamamoto, Yuhji, Tachibana, Shogo, Yurimoto, Hisayoshi, and Usui, Tomohiro

Published
2023
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3. Variations of the surface characteristics of Ryugu returned samples

Author

Nakato, Aiko, Yada, Toru, Nishimura, Masahiro, Yogata, Kasumi, Miyazaki, Akiko, Nagashima, Kana, Hatakeda, Kentaro, Kumagai, Kazuya, Hitomi, Yuya, Soejima, Hiromichi, Bibring, Jean-Pierre, Pilorget, Cedric, Hamm, Vincent, Brunetto, Rosario, Riu, Lucie, Lourit, Lionel, Loizeau, Damien, Le Pivert-Jolivet, Tania, Lequertier, Guillaume, Moussi-Soffys, Aurelie, Abe, Masanao, Okada, Tatsuaki, Usui, Tomohiro, Nakazawa, Satoru, Saiki, Takanao, Tanaka, Satoshi, Terui, Fuyuto, Yoshikawa, Makoto, Watanabe, Sei-ichiro, and Tsuda, Yuichi

Published
2023
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5. A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu

Author

Noguchi, Takaaki, Matsumoto, Toru, Miyake, Akira, Igami, Yohei, Haruta, Mitsutaka, Saito, Hikaru, Hata, Satoshi, Seto, Yusuke, Miyahara, Masaaki, Tomioka, Naotaka, Ishii, Hope A., Bradley, John P., Ohtaki, Kenta K., Dobrică, Elena, Leroux, Hugues, Le Guillou, Corentin, Jacob, Damien, de la Peña, Francisco, Laforet, Sylvain, Marinova, Maya, Langenhorst, Falko, Harries, Dennis, Beck, Pierre, Phan, Thi H. V., Rebois, Rolando, Abreu, Neyda M., Gray, Jennifer, Zega, Thomas, Zanetta, Pierre-M., Thompson, Michelle S., Stroud, Rhonda, Burgess, Kate, Cymes, Brittany A., Bridges, John C., Hicks, Leon, Lee, Martin R., Daly, Luke, Bland, Phil A., Zolensky, Michael E., Frank, David R., Martinez, James, Tsuchiyama, Akira, Yasutake, Masahiro, Matsuno, Junya, Okumura, Shota, Mitsukawa, Itaru, Uesugi, Kentaro, Uesugi, Masayuki, Takeuchi, Akihisa, Sun, Mingqi, Enju, Satomi, Takigawa, Aki, Michikami, Tatsuhiro, Nakamura, Tomoki, Matsumoto, Megumi, Nakauchi, Yusuke, Abe, Masanao, Arakawa, Masahiko, Fujii, Atsushi, Hayakawa, Masahiko, Hirata, Naru, Hirata, Naoyuki, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kousuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Mimasu, Yuya, Miura, Akira, Morota, Tomokatsu, Nakazawa, Satoru, Namiki, Noriyuki, Noda, Hirotomo, Noguchi, Rina, Ogawa, Naoko, Ogawa, Kazunori, Okada, Tatsuaki, Okamoto, Chisato, Ono, Go, Ozaki, Masanobu, Saiki, Takanao, Sakatani, Naoya, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Sugita, Seiji, Takei, Yuto, Takeuchi, Hiroshi, Tanaka, Satoshi, Tatsumi, Eri, Terui, Fuyuto, Tsukizaki, Ryudo, Wada, Koji, Yamada, Manabu, Yamada, Tetsuya, Yamamoto, Yukio, Yano, Hajime, Yokota, Yasuhiro, Yoshihara, Keisuke, Yoshikawa, Makoto, Yoshikawa, Kent, Fukai, Ryohta, Furuya, Shizuho, Hatakeda, Kentaro, Hayashi, Tasuku, Hitomi, Yuya, Kumagai, Kazuya, Miyazaki, Akiko, Nakato, Aiko, Nishimura, Masahiro, Soejima, Hiromichi, Suzuki, Ayako I., Usui, Tomohiro, Yada, Toru, Yamamoto, Daiki, Yogata, Kasumi, Yoshitake, Miwa, Connolly, Jr, Harold C., Lauretta, Dante S., Yurimoto, Hisayoshi, Nagashima, Kazuhide, Kawasaki, Noriyuki, Sakamoto, Naoya, Okazaki, Ryuji, Yabuta, Hikaru, Naraoka, Hiroshi, Sakamoto, Kanako, Tachibana, Shogo, Watanabe, Sei-ichiro, and Tsuda, Yuichi

Published
2023
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6. A pristine record of outer Solar System materials from asteroid Ryugu’s returned sample

Author

Ito, Motoo, Tomioka, Naotaka, Uesugi, Masayuki, Yamaguchi, Akira, Shirai, Naoki, Ohigashi, Takuji, Liu, Ming-Chang, Greenwood, Richard C., Kimura, Makoto, Imae, Naoya, Uesugi, Kentaro, Nakato, Aiko, Yogata, Kasumi, Yuzawa, Hayato, Kodama, Yu, Tsuchiyama, Akira, Yasutake, Masahiro, Findlay, Ross, Franchi, Ian A., Malley, James A., McCain, Kaitlyn A., Matsuda, Nozomi, McKeegan, Kevin D., Hirahara, Kaori, Takeuchi, Akihisa, Sekimoto, Shun, Sakurai, Ikuya, Okada, Ikuo, Karouji, Yuzuru, Arakawa, Masahiko, Fujii, Atsushi, Fujimoto, Masaki, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kosuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Mori, Osamu, Morota, Tomokatsu, Nakazawa, Satoru, Namiki, Noriyuki, Noda, Hirotomo, Noguchi, Rina, Ogawa, Naoko, Ogawa, Kazunori, Okada, Tatsuaki, Okamoto, Chisato, Ono, Go, Ozaki, Masanobu, Saiki, Takanao, Sakatani, Naoya, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Sugita, Seiji, Takei, Yuto, Takeuchi, Hiroshi, Tanaka, Satoshi, Tatsumi, Eri, Terui, Fuyuto, Tsukizaki, Ryudo, Wada, Koji, Yamada, Manabu, Yamada, Tetsuya, Yamamoto, Yukio, Yano, Hajime, Yokota, Yasuhiro, Yoshihara, Keisuke, Yoshikawa, Makoto, Yoshikawa, Kent, Fukai, Ryota, Furuya, Shizuho, Hatakeda, Kentaro, Hayashi, Tasuku, Hitomi, Yuya, Kumagai, Kazuya, Miyazaki, Akiko, Nishimura, Masahiro, Soejima, Hiromichi, Iwamae, Ayako, Yamamoto, Daiki, Yoshitake, Miwa, Yada, Toru, Abe, Masanao, Usui, Tomohiro, Watanabe, Sei-ichiro, and Tsuda, Yuichi

Published
2022
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7. Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid Ryugu

Author

Yada, Toru, Abe, Masanao, Okada, Tatsuaki, Nakato, Aiko, Yogata, Kasumi, Miyazaki, Akiko, Hatakeda, Kentaro, Kumagai, Kazuya, Nishimura, Masahiro, Hitomi, Yuya, Soejima, Hiromichi, Yoshitake, Miwa, Iwamae, Ayako, Furuya, Shizuho, Uesugi, Masayuki, Karouji, Yuzuru, Usui, Tomohiro, Hayashi, Tasuku, Yamamoto, Daiki, Fukai, Ryota, Sugita, Seiji, Cho, Yuichiro, Yumoto, Koki, Yabe, Yuna, Bibring, Jean-Pierre, Pilorget, Cedric, Hamm, Vincent, Brunetto, Rosario, Riu, Lucie, Lourit, Lionel, Loizeau, Damien, Lequertier, Guillaume, Moussi-Soffys, Aurelie, Tachibana, Shogo, Sawada, Hirotaka, Okazaki, Ryuji, Takano, Yoshinori, Sakamoto, Kanako, Miura, Yayoi N., Yano, Hajime, Ireland, Trevor R., Yamada, Tetsuya, Fujimoto, Masaki, Kitazato, Kohei, Namiki, Noriyuki, Arakawa, Masahiko, Hirata, Naru, Yurimoto, Hisayoshi, Nakamura, Tomoki, Noguchi, Takaaki, Yabuta, Hikaru, Naraoka, Hiroshi, Ito, Motoo, Nakamura, Eizo, Uesugi, Kentaro, Kobayashi, Katsura, Michikami, Tatsuhiro, Kikuchi, Hiroshi, Hirata, Naoyuki, Ishihara, Yoshiaki, Matsumoto, Koji, Noda, Hirotomo, Noguchi, Rina, Shimaki, Yuri, Shirai, Kei, Ogawa, Kazunori, Wada, Koji, Senshu, Hiroki, Yamamoto, Yukio, Morota, Tomokatsu, Honda, Rie, Honda, Chikatoshi, Yokota, Yasuhiro, Matsuoka, Moe, Sakatani, Naoya, Tatsumi, Eri, Miura, Akira, Yamada, Manabu, Fujii, Atsushi, Hirose, Chikako, Hosoda, Satoshi, Ikeda, Hitoshi, Iwata, Takahiro, Kikuchi, Shota, Mimasu, Yuya, Mori, Osamu, Ogawa, Naoko, Ono, Go, Shimada, Takanobu, Soldini, Stefania, Takahashi, Tadateru, Takei, Yuto, Takeuchi, Hiroshi, Tsukizaki, Ryudo, Yoshikawa, Kent, Terui, Fuyuto, Nakazawa, Satoru, Tanaka, Satoshi, Saiki, Takanao, Yoshikawa, Makoto, Watanabe, Sei-ichiro, and Tsuda, Yuichi

Published
2022
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8. Hayabusa Asteroid Sample Catalog 2022

Author

KANEMARU, Rei, KUMAGAI, Kazuya, SOEJIMA, Hiromichi, YADA, Toru, NISHIMURA, Masahiro, ABE, Masanao, OKADA, Tatsuaki, YOGATA, Kasumi, SAKAMOTO, Kanako, MIYAZAKI, Akiko, NAGASHIMA, Kana, TAHARA, Rui, NAKANO, Arisa, OJIMA, Tomoko, FUKAI, Ryota, ISHIZAKI, Takuya, HATAKEDA, Kentaro, HITOMI, Yuya, SUGIYAMA, Yuka, SUGAHARA, Haruna, SUZUKI, Shino, TACHIBANA, Shogo, and USUI, Tomohiro

Abstract

形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA2230019000, レポート番号: JAXA-SP-22-005E

Published
2023

9. Contamination analyses of clean rooms and clean chambers at the Extraterrestrial Sample Curation Center of JAXA in 2021 and 2022

Author

HITOMI, Yuya, SUZUKI, Shino, HATAKEDA, Kentaro, KUMAGAI, Kazuya, NISHIMURA, Masahiro, YADA, Toru, OKADA, Tatsuaki, ABE, Masanao, and USUI, Tomohiro

Abstract

The Extraterrestrial Sample Curation Center of JAXA receives samples returned by asteroidal explorer. Such returned samples are handled by meticulously cleaned tools in the nitrogen-circulation-type clean chamber to prevent contamination from earth materials. In May 2022, two new glove boxes (GB6 and GB7) were installed to our curation facility for the storage of samples returned from initial analyses of Hayabusa2, and general sample handling in highpurity nitrogen respectively. These glove boxes were confirmed to have the same level of cleanliness as GB1 from the results of the contamination analyses. New ISO Class 6 clean room (ISO-14644-1), clean chambers and glove boxes have also been designed for receiving the samples from the OSIRIS-REx mission returning to Earth in 2023. Human activity, tools and construction work are the risk to introduce the contaminants into the clean room and clean chambers. To ensure that extraterrestrial samples are maintained in a clean environment, it is essential to continuously monitor the cleanliness of clean rooms, clean chambers, and glove boxes in which samples are processed and stored. Thus, in this study, we employ results of annual contamination analyses to assess the cleanliness level of the environment where the samples were processed and stored based on ISO standards (ISO-14644-8, ISO-14644-10), and it was confirmed that the cleanliness level is kept until 2022 even after the Ryugu samples were returned and processed. Cultivation-based microbial contamination analysis of both clean rooms and clean chambers detected no microorganisms. In February 2022, comprehensive two-dimensional gas chromatography Time-Of-Flight Mass Spectrometer was introduced in our group, which enabled analysis of organic substances in our laboratory. It has become possible to obtain organic materials data that interpolate environmental evaluation that are outsourced to outside contractors, which can only be performed once or twice a year. The results of GC analysis indicated the increase of organics in the adjacent clean room after starting the new clean room construction., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA2230020000, レポート番号: JAXA-SP-22-006E

Published
2023

10. Hayabusa2 Asteroid Sample Catalog 2022

Author

YADA, Toru, NISHIMURA, Masahiro, ABE, Masanao, OKADA, Tatsuaki, YOGATA, Kasumi, SAKAMOTO, Kanako, MIYAZAKI, Akiko, NAGASHIMA, Kana, KANEMARU, Rei, TAHARA, Rui, NAKANO, Arisa, OJIMA, Tomoko, FUKAI, Ryota, ISHIZAKI, Takuya, HATAKEDA, Kentaro, KUMAGAI, Kazuya, HITOMI, Yuya, SOEJIMA, Hiromichi, SUGIYAMA, Yuka, SUGAHARA, Haruna, SUZUKI, Shino, TACHIBANA, Shogo, and USUI, Tomohiro

Abstract

資料番号: AA2230014000, レポート番号: JAXA-SP-22-004E

Published
2023

11. A newly revised estimation of bulk densities and examination of the shape of individual Ryugu grains

Author

Miyazaki, Akiko, primary, Yada, Toru, additional, Yogata, Kasumi, additional, Hatakeda, Kentaro, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Nagashima, Kana, additional, Kumagai, Kazuya, additional, Hitomi, Yuya, additional, Soejima, Hiromichi, additional, Tahara, Rui, additional, Kanemaru, Rei, additional, Nakano, Arisa, additional, Yoshitake, Miwa, additional, Iwamae, Ayako, additional, Furuya, Shizuho, additional, Tsuchiyama, Akira, additional, Tachibana, Shogo, additional, Michikami, Tatsuhiro, additional, Okada, Tatsuaki, additional, Abe, Masanao, additional, and Usui, Tomohiro, additional

Published
2023
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12. Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites

Author

Yokoyama, Tetsuya, Nagashima, Kazuhide, Nakai, Izumi, Young, Edward D., Abe, Yoshinari, Aleon, Jerome, Alexander, Conel M. O'D., Amari, Sachiko, Amelin, Yuri, Bajo, Ken-ichi, Bizzarro, Martin, Namiki, Noriyuki, Noda, Hirotomo, Noguchi, Rina, Ogawa, Naoko, Ogawa, Kazunori, Okada, Tatsuaki, Okamoto, Chisato, Ono, Go, Ozaki, Masanobu, Saiki, Takanao, Bouvier, Audrey, Sakatani, Naoya, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Sugita, Seiji, Takei, Yuto, Takeuchi, Hiroshi, Tanaka, Satoshi, Tatsumi, Eri, Carlson, Richard W., Terui, Fuyuto, Tsuda, Yuichi, Tsukizaki, Ryudo, Wada, Koji, Watanabe, Sei-ichiro, Yamada, Manabu, Yamada, Tetsuya, Yamamoto, Yukio, Yano, Hajime, Yokota, Yasuhiro, Chaussidon, Marc, Yoshihara, Keisuke, Yoshikawa, Makoto, Yoshikawa, Kent, Furuya, Shizuho, Hatakeda, Kentaro, Hayashi, Tasuku, Hitomi, Yuya, Kumagai, Kazuya, Miyazaki, Akiko, Nakato, Aiko, Choi, Byeon-Gak, Nishimura, Masahiro, Soejima, Hiromichi, Suzuki, Ayako, Yada, Toru, Yamamoto, Daiki, Yogata, Kasumi, Yoshitake, Miwa, Tachibana, Shogo, Yurimoto, Hisayoshi, Dauphas, Nicolas, Davis, Andrew M., Di Rocco, Tommaso, Fujiya, Wataru, Fukai, Ryota, Gautam, Ikshu, Haba, Makiko K., Hibiya, Yuki, Hidaka, Hiroshi, Homma, Hisashi, Hoppe, Peter, Huss, Gary R., Ichida, Kiyohiro, Iizuka, Tsuyoshi, Ireland, Trevor R., Ishikawa, Akira, Ito, Motoo, Itoh, Shoichi, Kawasaki, Noriyuki, Kita, Noriko T., Kitajima, Kouki, Kleine, Thorsten, Komatani, Shintaro, Krot, Alexander N., Liu, Ming-Chang, Masuda, Yuki, McKeegan, Kevin D., Morita, Mayu, Motomura, Kazuko, Moynier, Frederic, Nguyen, Ann, Nittler, Larry, Onose, Morihiko, Pack, Andreas, Park, Changkun, Piani, Laurette, Qin, Liping, Russell, Sara S., Sakamoto, Naoya, Schoenbaechler, Maria, Tafla, Lauren, Tang, Haolan, Terada, Kentaro, Terada, Yasuko, Usui, Tomohiro, Wada, Sohei, Wadhwa, Meenakshi, Walker, Richard J., Yamashita, Katsuyuki, Yin, Qing-Zhu, Yoneda, Shigekazu, Yui, Hiroharu, Zhang, Ai-Cheng, Connolly Jr, Harold C., Lauretta, Dante S., Nakamura, Tomoki, Naraoka, Hiroshi, Noguchi, Takaaki, Okazaki, Ryuji, Sakamoto, Kanako, Yabuta, Hikaru, Abe, Masanao, Arakawa, Masahiko, Fujii, Atsushi, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kosuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Morota, Tomokatsu, Nakazawa, Satoru, Yokoyama, Tetsuya, Nagashima, Kazuhide, Nakai, Izumi, Young, Edward D., Abe, Yoshinari, Aleon, Jerome, Alexander, Conel M. O'D., Amari, Sachiko, Amelin, Yuri, Bajo, Ken-ichi, Bizzarro, Martin, Namiki, Noriyuki, Noda, Hirotomo, Noguchi, Rina, Ogawa, Naoko, Ogawa, Kazunori, Okada, Tatsuaki, Okamoto, Chisato, Ono, Go, Ozaki, Masanobu, Saiki, Takanao, Bouvier, Audrey, Sakatani, Naoya, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Sugita, Seiji, Takei, Yuto, Takeuchi, Hiroshi, Tanaka, Satoshi, Tatsumi, Eri, Carlson, Richard W., Terui, Fuyuto, Tsuda, Yuichi, Tsukizaki, Ryudo, Wada, Koji, Watanabe, Sei-ichiro, Yamada, Manabu, Yamada, Tetsuya, Yamamoto, Yukio, Yano, Hajime, Yokota, Yasuhiro, Chaussidon, Marc, Yoshihara, Keisuke, Yoshikawa, Makoto, Yoshikawa, Kent, Furuya, Shizuho, Hatakeda, Kentaro, Hayashi, Tasuku, Hitomi, Yuya, Kumagai, Kazuya, Miyazaki, Akiko, Nakato, Aiko, Choi, Byeon-Gak, Nishimura, Masahiro, Soejima, Hiromichi, Suzuki, Ayako, Yada, Toru, Yamamoto, Daiki, Yogata, Kasumi, Yoshitake, Miwa, Tachibana, Shogo, Yurimoto, Hisayoshi, Dauphas, Nicolas, Davis, Andrew M., Di Rocco, Tommaso, Fujiya, Wataru, Fukai, Ryota, Gautam, Ikshu, Haba, Makiko K., Hibiya, Yuki, Hidaka, Hiroshi, Homma, Hisashi, Hoppe, Peter, Huss, Gary R., Ichida, Kiyohiro, Iizuka, Tsuyoshi, Ireland, Trevor R., Ishikawa, Akira, Ito, Motoo, Itoh, Shoichi, Kawasaki, Noriyuki, Kita, Noriko T., Kitajima, Kouki, Kleine, Thorsten, Komatani, Shintaro, Krot, Alexander N., Liu, Ming-Chang, Masuda, Yuki, McKeegan, Kevin D., Morita, Mayu, Motomura, Kazuko, Moynier, Frederic, Nguyen, Ann, Nittler, Larry, Onose, Morihiko, Pack, Andreas, Park, Changkun, Piani, Laurette, Qin, Liping, Russell, Sara S., Sakamoto, Naoya, Schoenbaechler, Maria, Tafla, Lauren, Tang, Haolan, Terada, Kentaro, Terada, Yasuko, Usui, Tomohiro, Wada, Sohei, Wadhwa, Meenakshi, Walker, Richard J., Yamashita, Katsuyuki, Yin, Qing-Zhu, Yoneda, Shigekazu, Yui, Hiroharu, Zhang, Ai-Cheng, Connolly Jr, Harold C., Lauretta, Dante S., Nakamura, Tomoki, Naraoka, Hiroshi, Noguchi, Takaaki, Okazaki, Ryuji, Sakamoto, Kanako, Yabuta, Hikaru, Abe, Masanao, Arakawa, Masahiko, Fujii, Atsushi, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kosuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Morota, Tomokatsu, and Nakazawa, Satoru

Abstract

Carbonaceous meteorites are thought to be fragments of C-type (carbonaceous) asteroids. Samples of the C-type asteroid (162173) Ryugu were retrieved by the Hayabusa2 spacecraft. We measured the mineralogy and bulk chemical and isotopic compositions of Ryugu samples. The samples are mainly composed of materials similar to those of carbonaceous chondrite meteorites, particularly the CI (Ivuna-type) group. The samples consist predominantly of minerals formed in aqueous fluid on a parent planetesimal. The primary minerals were altered by fluids at a temperature of 37 degrees +/- 10 degrees C, about 5.2(-0.7)(+0.8) million (statistical) or 5.2(-2.1)(+1.6) million (systematic) years after the formation of the first solids in the Solar System. After aqueous alteration, the Ryugu samples were likely never heated above similar to 100 degrees C. The samples have a chemical composition that more closely resembles that of the Sun's photosphere than other natural samples do.

Published
2023

13. Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolution

Author

Okazaki, Ryuji, primary, Marty, Bernard, additional, Busemann, Henner, additional, Hashizume, Ko, additional, Gilmour, Jamie D., additional, Meshik, Alex, additional, Yada, Toru, additional, Kitajima, Fumio, additional, Broadley, Michael W., additional, Byrne, David, additional, Füri, Evelyn, additional, Riebe, My E. I., additional, Krietsch, Daniela, additional, Maden, Colin, additional, Ishida, Akizumi, additional, Clay, Patricia, additional, Crowther, Sarah A., additional, Fawcett, Lydia, additional, Lawton, Thomas, additional, Pravdivtseva, Olga, additional, Miura, Yayoi N., additional, Park, Jisun, additional, Bajo, Ken-ichi, additional, Takano, Yoshinori, additional, Yamada, Keita, additional, Kawagucci, Shinsuke, additional, Matsui, Yohei, additional, Yamamoto, Mizuki, additional, Righter, Kevin, additional, Sakai, Saburo, additional, Iwata, Naoyoshi, additional, Shirai, Naoki, additional, Sekimoto, Shun, additional, Inagaki, Makoto, additional, Ebihara, Mitsuru, additional, Yokochi, Reika, additional, Nishiizumi, Kunihiko, additional, Nagao, Keisuke, additional, Lee, Jong Ik, additional, Kano, Akihiro, additional, Caffee, Marc W., additional, Uemura, Ryu, additional, Nakamura, Tomoki, additional, Naraoka, Hiroshi, additional, Noguchi, Takaaki, additional, Yabuta, Hikaru, additional, Yurimoto, Hisayoshi, additional, Tachibana, Shogo, additional, Sawada, Hirotaka, additional, Sakamoto, Kanako, additional, Abe, Masanao, additional, Arakawa, Masahiko, additional, Fujii, Atsushi, additional, Hayakawa, Masahiko, additional, Hirata, Naoyuki, additional, Hirata, Naru, additional, Honda, Rie, additional, Honda, Chikatoshi, additional, Hosoda, Satoshi, additional, Iijima, Yu-ichi, additional, Ikeda, Hitoshi, additional, Ishiguro, Masateru, additional, Ishihara, Yoshiaki, additional, Iwata, Takahiro, additional, Kawahara, Kosuke, additional, Kikuchi, Shota, additional, Kitazato, Kohei, additional, Matsumoto, Koji, additional, Matsuoka, Moe, additional, Michikami, Tatsuhiro, additional, Mimasu, Yuya, additional, Miura, Akira, additional, Morota, Tomokatsu, additional, Nakazawa, Satoru, additional, Namiki, Noriyuki, additional, Noda, Hirotomo, additional, Noguchi, Rina, additional, Ogawa, Naoko, additional, Ogawa, Kazunori, additional, Okada, Tatsuaki, additional, Okamoto, Chisato, additional, Ono, Go, additional, Ozaki, Masanobu, additional, Saiki, Takanao, additional, Sakatani, Naoya, additional, Senshu, Hiroki, additional, Shimaki, Yuri, additional, Shirai, Kei, additional, Sugita, Seiji, additional, Takei, Yuto, additional, Takeuchi, Hiroshi, additional, Tanaka, Satoshi, additional, Tatsumi, Eri, additional, Terui, Fuyuto, additional, Tsukizaki, Ryudo, additional, Wada, Koji, additional, Yamada, Manabu, additional, Yamada, Tetsuya, additional, Yamamoto, Yukio, additional, Yano, Hajime, additional, Yokota, Yasuhiro, additional, Yoshihara, Keisuke, additional, Yoshikawa, Makoto, additional, Yoshikawa, Kent, additional, Furuya, Shizuho, additional, Hatakeda, Kentaro, additional, Hayashi, Tasuku, additional, Hitomi, Yuya, additional, Kumagai, Kazuya, additional, Miyazaki, Akiko, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Soejima, Hiromichi, additional, Iwamae, Ayako, additional, Yamamoto, Daiki, additional, Yogata, Kasumi, additional, Yoshitake, Miwa, additional, Fukai, Ryota, additional, Usui, Tomohiro, additional, Connolly, Harold C., additional, Lauretta, Dante, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2023
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14. Soluble organic molecules in samples of the carbonaceous asteroid (162173) Ryugu

Author

Naraoka, Hiroshi, primary, Takano, Yoshinori, additional, Dworkin, Jason P., additional, Oba, Yasuhiro, additional, Hamase, Kenji, additional, Furusho, Aogu, additional, Ogawa, Nanako O., additional, Hashiguchi, Minako, additional, Fukushima, Kazuhiko, additional, Aoki, Dan, additional, Schmitt-Kopplin, Philippe, additional, Aponte, José C., additional, Parker, Eric T., additional, Glavin, Daniel P., additional, McLain, Hannah L., additional, Elsila, Jamie E., additional, Graham, Heather V., additional, Eiler, John M., additional, Orthous-Daunay, Francois-Regis, additional, Wolters, Cédric, additional, Isa, Junko, additional, Vuitton, Véronique, additional, Thissen, Roland, additional, Sakai, Saburo, additional, Yoshimura, Toshihiro, additional, Koga, Toshiki, additional, Ohkouchi, Naohiko, additional, Chikaraishi, Yoshito, additional, Sugahara, Haruna, additional, Mita, Hajime, additional, Furukawa, Yoshihiro, additional, Hertkorn, Norbert, additional, Ruf, Alexander, additional, Yurimoto, Hisayoshi, additional, Nakamura, Tomoki, additional, Noguchi, Takaaki, additional, Okazaki, Ryuji, additional, Yabuta, Hikaru, additional, Sakamoto, Kanako, additional, Tachibana, Shogo, additional, Connolly, Harold C., additional, Lauretta, Dante S., additional, Abe, Masanao, additional, Yada, Toru, additional, Nishimura, Masahiro, additional, Yogata, Kasumi, additional, Nakato, Aiko, additional, Yoshitake, Miwa, additional, Suzuki, Ayako, additional, Miyazaki, Akiko, additional, Furuya, Shizuho, additional, Hatakeda, Kentaro, additional, Soejima, Hiromichi, additional, Hitomi, Yuya, additional, Kumagai, Kazuya, additional, Usui, Tomohiro, additional, Hayashi, Tasuku, additional, Yamamoto, Daiki, additional, Fukai, Ryota, additional, Kitazato, Kohei, additional, Sugita, Seiji, additional, Namiki, Noriyuki, additional, Arakawa, Masahiko, additional, Ikeda, Hitoshi, additional, Ishiguro, Masateru, additional, Hirata, Naru, additional, Wada, Koji, additional, Ishihara, Yoshiaki, additional, Noguchi, Rina, additional, Morota, Tomokatsu, additional, Sakatani, Naoya, additional, Matsumoto, Koji, additional, Senshu, Hiroki, additional, Honda, Rie, additional, Tatsumi, Eri, additional, Yokota, Yasuhiro, additional, Honda, Chikatoshi, additional, Michikami, Tatsuhiro, additional, Matsuoka, Moe, additional, Miura, Akira, additional, Noda, Hirotomo, additional, Yamada, Tetsuya, additional, Yoshihara, Keisuke, additional, Kawahara, Kosuke, additional, Ozaki, Masanobu, additional, Iijima, Yu-ichi, additional, Yano, Hajime, additional, Hayakawa, Masahiko, additional, Iwata, Takahiro, additional, Tsukizaki, Ryudo, additional, Sawada, Hirotaka, additional, Hosoda, Satoshi, additional, Ogawa, Kazunori, additional, Okamoto, Chisato, additional, Hirata, Naoyuki, additional, Shirai, Kei, additional, Shimaki, Yuri, additional, Yamada, Manabu, additional, Okada, Tatsuaki, additional, Yamamoto, Yukio, additional, Takeuchi, Hiroshi, additional, Fujii, Atsushi, additional, Takei, Yuto, additional, Yoshikawa, Kento, additional, Mimasu, Yuya, additional, Ono, Go, additional, Ogawa, Naoko, additional, Kikuchi, Shota, additional, Nakazawa, Satoru, additional, Terui, Fuyuto, additional, Tanaka, Satoshi, additional, Saiki, Takanao, additional, Yoshikawa, Makoto, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2023
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15. Macromolecular organic matter in samples of the asteroid (162173) Ryugu

Author

Yabuta, Hikaru, primary, Cody, George D., additional, Engrand, Cécile, additional, Kebukawa, Yoko, additional, De Gregorio, Bradley, additional, Bonal, Lydie, additional, Remusat, Laurent, additional, Stroud, Rhonda, additional, Quirico, Eric, additional, Nittler, Larry, additional, Hashiguchi, Minako, additional, Komatsu, Mutsumi, additional, Okumura, Taiga, additional, Mathurin, Jérémie, additional, Dartois, Emmanuel, additional, Duprat, Jean, additional, Takahashi, Yoshio, additional, Takeichi, Yasuo, additional, Kilcoyne, David, additional, Yamashita, Shohei, additional, Dazzi, Alexandre, additional, Deniset-Besseau, Ariane, additional, Sandford, Scott, additional, Martins, Zita, additional, Tamenori, Yusuke, additional, Ohigashi, Takuji, additional, Suga, Hiroki, additional, Wakabayashi, Daisuke, additional, Verdier-Paoletti, Maximilien, additional, Mostefaoui, Smail, additional, Montagnac, Gilles, additional, Barosch, Jens, additional, Kamide, Kanami, additional, Shigenaka, Miho, additional, Bejach, Laure, additional, Matsumoto, Megumi, additional, Enokido, Yuma, additional, Noguchi, Takaaki, additional, Yurimoto, Hisayoshi, additional, Nakamura, Tomoki, additional, Okazaki, Ryuji, additional, Naraoka, Hiroshi, additional, Sakamoto, Kanako, additional, Connolly, Harold C., additional, Lauretta, Dante S., additional, Abe, Masanao, additional, Okada, Tatsuaki, additional, Yada, Toru, additional, Nishimura, Masahiro, additional, Yogata, Kasumi, additional, Nakato, Aiko, additional, Yoshitake, Miwa, additional, Iwamae, Ayako, additional, Furuya, Shizuho, additional, Hatakeda, Kentaro, additional, Miyazaki, Akiko, additional, Soejima, Hiromichi, additional, Hitomi, Yuya, additional, Kumagai, Kazuya, additional, Usui, Tomohiro, additional, Hayashi, Tasuku, additional, Yamamoto, Daiki, additional, Fukai, Ryota, additional, Sugita, Seiji, additional, Kitazato, Kohei, additional, Hirata, Naru, additional, Honda, Rie, additional, Morota, Tomokatsu, additional, Tatsumi, Eri, additional, Sakatani, Naoya, additional, Namiki, Noriyuki, additional, Matsumoto, Koji, additional, Noguchi, Rina, additional, Wada, Koji, additional, Senshu, Hiroki, additional, Ogawa, Kazunori, additional, Yokota, Yasuhiro, additional, Ishihara, Yoshiaki, additional, Shimaki, Yuri, additional, Yamada, Manabu, additional, Honda, Chikatoshi, additional, Michikami, Tatsuhiro, additional, Matsuoka, Moe, additional, Hirata, Naoyuki, additional, Arakawa, Masahiko, additional, Okamoto, Chisato, additional, Ishiguro, Masateru, additional, Jaumann, Ralf, additional, Bibring, Jean-Pierre, additional, Grott, Matthias, additional, Schröder, Stefan, additional, Otto, Katharina, additional, Pilorget, Cedric, additional, Schmitz, Nicole, additional, Biele, Jens, additional, Ho, Tra-Mi, additional, Moussi-Soffys, Aurélie, additional, Miura, Akira, additional, Noda, Hirotomo, additional, Yamada, Tetsuya, additional, Yoshihara, Keisuke, additional, Kawahara, Kosuke, additional, Ikeda, Hitoshi, additional, Yamamoto, Yukio, additional, Shirai, Kei, additional, Kikuchi, Shota, additional, Ogawa, Naoko, additional, Takeuchi, Hiroshi, additional, Ono, Go, additional, Mimasu, Yuya, additional, Yoshikawa, Kent, additional, Takei, Yuto, additional, Fujii, Atsushi, additional, Iijima, Yu-ichi, additional, Nakazawa, Satoru, additional, Hosoda, Satoshi, additional, Iwata, Takahiro, additional, Hayakawa, Masahiko, additional, Sawada, Hirotaka, additional, Yano, Hajime, additional, Tsukizaki, Ryudo, additional, Ozaki, Masanobu, additional, Terui, Fuyuto, additional, Tanaka, Satoshi, additional, Fujimoto, Masaki, additional, Yoshikawa, Makoto, additional, Saiki, Takanao, additional, Tachibana, Shogo, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2023
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16. Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites

Author

Yokoyama, Tetsuya, primary, Nagashima, Kazuhide, additional, Nakai, Izumi, additional, Young, Edward D., additional, Abe, Yoshinari, additional, Aléon, Jérôme, additional, Alexander, Conel M. O’D., additional, Amari, Sachiko, additional, Amelin, Yuri, additional, Bajo, Ken-ichi, additional, Bizzarro, Martin, additional, Bouvier, Audrey, additional, Carlson, Richard W., additional, Chaussidon, Marc, additional, Choi, Byeon-Gak, additional, Dauphas, Nicolas, additional, Davis, Andrew M., additional, Di Rocco, Tommaso, additional, Fujiya, Wataru, additional, Fukai, Ryota, additional, Gautam, Ikshu, additional, Haba, Makiko K., additional, Hibiya, Yuki, additional, Hidaka, Hiroshi, additional, Homma, Hisashi, additional, Hoppe, Peter, additional, Huss, Gary R., additional, Ichida, Kiyohiro, additional, Iizuka, Tsuyoshi, additional, Ireland, Trevor R., additional, Ishikawa, Akira, additional, Ito, Motoo, additional, Itoh, Shoichi, additional, Kawasaki, Noriyuki, additional, Kita, Noriko T., additional, Kitajima, Kouki, additional, Kleine, Thorsten, additional, Komatani, Shintaro, additional, Krot, Alexander N., additional, Liu, Ming-Chang, additional, Masuda, Yuki, additional, McKeegan, Kevin D., additional, Morita, Mayu, additional, Motomura, Kazuko, additional, Moynier, Frédéric, additional, Nguyen, Ann, additional, Nittler, Larry, additional, Onose, Morihiko, additional, Pack, Andreas, additional, Park, Changkun, additional, Piani, Laurette, additional, Qin, Liping, additional, Russell, Sara S., additional, Sakamoto, Naoya, additional, Schönbächler, Maria, additional, Tafla, Lauren, additional, Tang, Haolan, additional, Terada, Kentaro, additional, Terada, Yasuko, additional, Usui, Tomohiro, additional, Wada, Sohei, additional, Wadhwa, Meenakshi, additional, Walker, Richard J., additional, Yamashita, Katsuyuki, additional, Yin, Qing-Zhu, additional, Yoneda, Shigekazu, additional, Yui, Hiroharu, additional, Zhang, Ai-Cheng, additional, Connolly, Harold C., additional, Lauretta, Dante S., additional, Nakamura, Tomoki, additional, Naraoka, Hiroshi, additional, Noguchi, Takaaki, additional, Okazaki, Ryuji, additional, Sakamoto, Kanako, additional, Yabuta, Hikaru, additional, Abe, Masanao, additional, Arakawa, Masahiko, additional, Fujii, Atsushi, additional, Hayakawa, Masahiko, additional, Hirata, Naoyuki, additional, Hirata, Naru, additional, Honda, Rie, additional, Honda, Chikatoshi, additional, Hosoda, Satoshi, additional, Iijima, Yu-ichi, additional, Ikeda, Hitoshi, additional, Ishiguro, Masateru, additional, Ishihara, Yoshiaki, additional, Iwata, Takahiro, additional, Kawahara, Kosuke, additional, Kikuchi, Shota, additional, Kitazato, Kohei, additional, Matsumoto, Koji, additional, Matsuoka, Moe, additional, Michikami, Tatsuhiro, additional, Mimasu, Yuya, additional, Miura, Akira, additional, Morota, Tomokatsu, additional, Nakazawa, Satoru, additional, Namiki, Noriyuki, additional, Noda, Hirotomo, additional, Noguchi, Rina, additional, Ogawa, Naoko, additional, Ogawa, Kazunori, additional, Okada, Tatsuaki, additional, Okamoto, Chisato, additional, Ono, Go, additional, Ozaki, Masanobu, additional, Saiki, Takanao, additional, Sakatani, Naoya, additional, Sawada, Hirotaka, additional, Senshu, Hiroki, additional, Shimaki, Yuri, additional, Shirai, Kei, additional, Sugita, Seiji, additional, Takei, Yuto, additional, Takeuchi, Hiroshi, additional, Tanaka, Satoshi, additional, Tatsumi, Eri, additional, Terui, Fuyuto, additional, Tsuda, Yuichi, additional, Tsukizaki, Ryudo, additional, Wada, Koji, additional, Watanabe, Sei-ichiro, additional, Yamada, Manabu, additional, Yamada, Tetsuya, additional, Yamamoto, Yukio, additional, Yano, Hajime, additional, Yokota, Yasuhiro, additional, Yoshihara, Keisuke, additional, Yoshikawa, Makoto, additional, Yoshikawa, Kent, additional, Furuya, Shizuho, additional, Hatakeda, Kentaro, additional, Hayashi, Tasuku, additional, Hitomi, Yuya, additional, Kumagai, Kazuya, additional, Miyazaki, Akiko, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Soejima, Hiromichi, additional, Suzuki, Ayako, additional, Yada, Toru, additional, Yamamoto, Daiki, additional, Yogata, Kasumi, additional, Yoshitake, Miwa, additional, Tachibana, Shogo, additional, and Yurimoto, Hisayoshi, additional

Published
2023
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17. Hayabusa Asteroid Sample Catalog 2021

Author

YADA, Toru, KUMAGAI, Kazuya, TACHIBANA, Shogo, ABE, Masanao, OKADA, Tatsuaki, NISHIMURA, Masahiro, YOGATA, Kasumi, SAKAMOTO, Kanako, NAKATO, Aiko, MIYAZAKI, Akiko, NAGASHIMA, Kana, KANEMARU, Rei, YAMAMOTO, Daiki, HAYASHI, Tasuku, FUKAI, Ryota, ISHIZAKI, Takuya, HATAKEDA, Kentaro, HITOMI, Yuya, SOEJIMA, Hiromichi, SUGAHARA, Haruna, SUZUKI, Shino, and USUI, Tomohiro

Abstract

形態: 図版あり, Physical characteristics: Original contains illustrations, 資料番号: AA2130016000, レポート番号: JAXA-SP-21-007E

Published
2022

18. A dehydrated space-weathered skin cloaking the hydrated interior of Ryugu

Author

Noguchi, Takaaki, primary, Matsumoto, Toru, additional, Miyake, Akira, additional, Igami, Yohei, additional, Haruta, Mitsutaka, additional, Saito, Hikaru, additional, Hata, Satoshi, additional, Seto, Yusuke, additional, Miyahara, Masaaki, additional, Tomioka, Naotaka, additional, Ishii, Hope A., additional, Bradley, John P., additional, Ohtaki, Kenta K., additional, Dobrică, Elena, additional, Leroux, Hugues, additional, Le Guillou, Corentin, additional, Jacob, Damien, additional, de la Peña, Francisco, additional, Laforet, Sylvain, additional, Marinova, Maya, additional, Langenhorst, Falko, additional, Harries, Dennis, additional, Beck, Pierre, additional, Phan, Thi H. V., additional, Rebois, Rolando, additional, Abreu, Neyda M., additional, Gray, Jennifer, additional, Zega, Thomas, additional, Zanetta, Pierre-M., additional, Thompson, Michelle S., additional, Stroud, Rhonda, additional, Burgess, Kate, additional, Cymes, Brittany A., additional, Bridges, John C., additional, Hicks, Leon, additional, Lee, Martin R., additional, Daly, Luke, additional, Bland, Phil A., additional, Zolensky, Michael E., additional, Frank, David R., additional, Martinez, James, additional, Tsuchiyama, Akira, additional, Yasutake, Masahiro, additional, Matsuno, Junya, additional, Okumura, Shota, additional, Mitsukawa, Itaru, additional, Uesugi, Kentaro, additional, Uesugi, Masayuki, additional, Takeuchi, Akihisa, additional, Sun, Mingqi, additional, Enju, Satomi, additional, Takigawa, Aki, additional, Michikami, Tatsuhiro, additional, Nakamura, Tomoki, additional, Matsumoto, Megumi, additional, Nakauchi, Yusuke, additional, Abe, Masanao, additional, Arakawa, Masahiko, additional, Fujii, Atsushi, additional, Hayakawa, Masahiko, additional, Hirata, Naru, additional, Hirata, Naoyuki, additional, Honda, Rie, additional, Honda, Chikatoshi, additional, Hosoda, Satoshi, additional, Iijima, Yu-ichi, additional, Ikeda, Hitoshi, additional, Ishiguro, Masateru, additional, Ishihara, Yoshiaki, additional, Iwata, Takahiro, additional, Kawahara, Kousuke, additional, Kikuchi, Shota, additional, Kitazato, Kohei, additional, Matsumoto, Koji, additional, Matsuoka, Moe, additional, Mimasu, Yuya, additional, Miura, Akira, additional, Morota, Tomokatsu, additional, Nakazawa, Satoru, additional, Namiki, Noriyuki, additional, Noda, Hirotomo, additional, Noguchi, Rina, additional, Ogawa, Naoko, additional, Ogawa, Kazunori, additional, Okada, Tatsuaki, additional, Okamoto, Chisato, additional, Ono, Go, additional, Ozaki, Masanobu, additional, Saiki, Takanao, additional, Sakatani, Naoya, additional, Sawada, Hirotaka, additional, Senshu, Hiroki, additional, Shimaki, Yuri, additional, Shirai, Kei, additional, Sugita, Seiji, additional, Takei, Yuto, additional, Takeuchi, Hiroshi, additional, Tanaka, Satoshi, additional, Tatsumi, Eri, additional, Terui, Fuyuto, additional, Tsukizaki, Ryudo, additional, Wada, Koji, additional, Yamada, Manabu, additional, Yamada, Tetsuya, additional, Yamamoto, Yukio, additional, Yano, Hajime, additional, Yokota, Yasuhiro, additional, Yoshihara, Keisuke, additional, Yoshikawa, Makoto, additional, Yoshikawa, Kent, additional, Fukai, Ryohta, additional, Furuya, Shizuho, additional, Hatakeda, Kentaro, additional, Hayashi, Tasuku, additional, Hitomi, Yuya, additional, Kumagai, Kazuya, additional, Miyazaki, Akiko, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Soejima, Hiromichi, additional, Suzuki, Ayako I., additional, Usui, Tomohiro, additional, Yada, Toru, additional, Yamamoto, Daiki, additional, Yogata, Kasumi, additional, Yoshitake, Miwa, additional, Connolly, Harold C., additional, Lauretta, Dante S., additional, Yurimoto, Hisayoshi, additional, Nagashima, Kazuhide, additional, Kawasaki, Noriyuki, additional, Sakamoto, Naoya, additional, Okazaki, Ryuji, additional, Yabuta, Hikaru, additional, Naraoka, Hiroshi, additional, Sakamoto, Kanako, additional, Tachibana, Shogo, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2022
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19. First asteroid gas sample delivered by the Hayabusa2 mission: A treasure box from Ryugu

Author

Okazaki, Ryuji, primary, Miura, Yayoi N., additional, Takano, Yoshinori, additional, Sawada, Hirotaka, additional, Sakamoto, Kanako, additional, Yada, Toru, additional, Yamada, Keita, additional, Kawagucci, Shinsuke, additional, Matsui, Yohei, additional, Hashizume, Ko, additional, Ishida, Akizumi, additional, Broadley, Michael W., additional, Marty, Bernard, additional, Byrne, David, additional, Füri, Evelyn, additional, Meshik, Alex, additional, Pravdivtseva, Olga, additional, Busemann, Henner, additional, Riebe, My E.I., additional, Gilmour, Jamie, additional, Park, Jisun, additional, Bajo, Ken-ichi, additional, Righter, Kevin, additional, Sakai, Saburo, additional, Sekimoto, Shun, additional, Kitajima, Fumio, additional, Crowther, Sarah A., additional, Iwata, Naoyoshi, additional, Shirai, Naoki, additional, Ebihara, Mitsuru, additional, Yokochi, Reika, additional, Nishiizumi, Kunihiko, additional, Nagao, Keisuke, additional, Lee, Jong Ik, additional, Clay, Patricia, additional, Kano, Akihiro, additional, Caffee, Marc W., additional, Uemura, Ryu, additional, Inagaki, Makoto, additional, Krietsch, Daniela, additional, Maden, Colin, additional, Yamamoto, Mizuki, additional, Fawcett, Lydia, additional, Lawton, Thomas, additional, Nakamura, Tomoki, additional, Naraoka, Hiroshi, additional, Noguchi, Takaaki, additional, Yabuta, Hikaru, additional, Yurimoto, Hisayoshi, additional, Tsuda, Yuichi, additional, Watanabe, Sei-ichiro, additional, Abe, Masanao, additional, Arakawa, Masahiko, additional, Fujii, Atsushi, additional, Hayakawa, Masahiko, additional, Hirata, Naoyuki, additional, Hirata, Naru, additional, Honda, Rie, additional, Honda, Chikatoshi, additional, Hosoda, Satoshi, additional, Iijima, Yu-ichi, additional, Ikeda, Hitoshi, additional, Ishiguro, Masateru, additional, Ishihara, Yoshiaki, additional, Iwata, Takahiro, additional, Kawahara, Kosuke, additional, Kikuchi, Shota, additional, Kitazato, Kohei, additional, Matsumoto, Koji, additional, Matsuoka, Moe, additional, Michikami, Tatsuhiro, additional, Mimasu, Yuya, additional, Miura, Akira, additional, Morota, Tomokatsu, additional, Nakazawa, Satoru, additional, Namiki, Noriyuki, additional, Noda, Hirotomo, additional, Noguchi, Rina, additional, Ogawa, Naoko, additional, Ogawa, Kazunori, additional, Okada, Tatsuaki, additional, Okamoto, Chisato, additional, Ono, Go, additional, Ozaki, Masanobu, additional, Saiki, Takanao, additional, Sakatani, Naoya, additional, Senshu, Hiroki, additional, Shimaki, Yuri, additional, Shirai, Kei, additional, Sugita, Seiji, additional, Takei, Yuto, additional, Takeuchi, Hiroshi, additional, Tanaka, Satoshi, additional, Tatsumi, Eri, additional, Terui, Fuyuto, additional, Tsukizaki, Ryudo, additional, Wada, Koji, additional, Yamada, Manabu, additional, Yamada, Tetsuya, additional, Yamamoto, Yukio, additional, Yano, Hajime, additional, Yokota, Yasuhiro, additional, Yoshihara, Keisuke, additional, Yoshikawa, Makoto, additional, Yoshikawa, Kent, additional, Furuya, Shizuho, additional, Hatakeda, Kentaro, additional, Hayashi, Tasuku, additional, Hitomi, Yuya, additional, Kumagai, Kazuya, additional, Miyazaki, Akiko, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Soejima, Hiromichi, additional, Iwamae, Ayako, additional, Yamamoto, Daiki, additional, Yogata, Kasumi, additional, Yoshitake, Miwa, additional, Fukai, Ryota, additional, Usui, Tomohiro, additional, Ireland, Trevor, additional, Connolly, Harold C., additional, Lauretta, Dante S., additional, and Tachibana, Shogo, additional

Published
2022
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20. Spatial and temporal variations of chemicals in the TSP aerosols simultaneously collected at three islands in Okinawa, Japan

Author

Arakaki, Takemitsu, Azechi, Sotaro, Somada, Yuka, Ijyu, Moriaki, Nakaema, Fumiya, Hitomi, Yuya, Handa, Daishi, Oshiro, Yoshito, Miyagi, Youichi, Tsuhako, Ai, Murayama, Hitomi, Higaonna, Yumi, Tanahara, Akira, Itoh, Akihide, Fukushima, Soko, Higashi, Kazuaki, Henza, Yui, Nishikawa, Rin, Shinjo, Hibiki, and Wang, Hongyan

Published
2014
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21. Homogeneity and heterogeneity in Near-Infrared FTIR spectra of Ryugu returned samples

Author

Hatakeda, Kentaro, primary, Yada, Toru, additional, Abe, Masanao, additional, Okada, Tatsuaki, additional, Nakato, Aiko, additional, Yogata, Kasumi, additional, Miyazaki, Akiko, additional, Nishimura, Masahiro, additional, Hitomi, Yuya, additional, Soejima, Hiromichi, additional, Yoshitake, Miwa, additional, Iwamae, Ayako, additional, Furuya, Shizuho, additional, Usui, Tomohiro, additional, and Kitazato, Kohei, additional

Published
2022
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22. Variations of the surface characteristics of Ryugu returned samples

Author

NAKATO, Aiko, primary, Yada, Toru, additional, Nishimura, Masahiro, additional, Yogata, Kasumi, additional, Miyazaki, Akiko, additional, Nagashima, Kana, additional, Hatakeda, Kentaro, additional, Kumagai, Kazuya, additional, Hitomi, Yuya, additional, Soejima, Hiromichi, additional, Bibring, Jean-Pierre, additional, Pilorget, Cedric, additional, Hamm, Vincent, additional, Brunetto, Rosario, additional, Riu, Lucie, additional, Lourit, Lionel, additional, Loizeau, Damien, additional, Pivert-Jolivet, Tania Le, additional, Lequertier, Guillaume, additional, Moussi-Soffys, Aurelie, additional, Abe, Masanao, additional, Okada, Tatsuaki, additional, Usui, Tomohiro, additional, Nakazawa, Satoru, additional, Saiki, Takanao, additional, Tanaka, Satoshi, additional, Terui, Fuyuto, additional, Yoshikawa, Makoto, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2022
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23. First asteroid gas sample delivered by the Hayabusa2 mission: A treasure box from Ryugu

Author

00898455, Okazaki, Ryuji, Miura, Yayoi N., Takano, Yoshinori, Sawada, Hirotaka, Sakamoto, Kanako, Yada, Toru, Yamada, Keita, Kawagucci, Shinsuke, Matsui, Yohei, Hashizume, Ko, Ishida, Akizumi, Broadley, Michael W., Marty, Bernard, Byrne, David, Füri, Evelyn, Meshik, Alex, Pravdivtseva, Olga, Busemann, Henner, Riebe, My E.I., Gilmour, Jamie, Park, Jisun, Bajo, Ken-ichi, Righter, Kevin, Sakai, Saburo, Sekimoto, Shun, Kitajima, Fumio, Crowther, Sarah A., Iwata, Naoyoshi, Shirai, Naoki, Ebihara, Mitsuru, Yokochi, Reika, Nishiizumi, Kunihiko, Nagao, Keisuke, Lee, Jong Ik, Clay, Patricia, Kano, Akihiro, Caffee, Marc W., Uemura, Ryu, Inagaki, Makoto, Krietsch, Daniela, Maden, Colin, Yamamoto, Mizuki, Fawcett, Lydia, Lawton, Thomas, Nakamura, Tomoki, Naraoka, Hiroshi, Noguchi, Takaaki, Yabuta, Hikaru, Yurimoto, Hisayoshi, Tsuda, Yuichi, Watanabe, Sei-ichiro, Abe, Masanao, Arakawa, Masahiko, Fujii, Atsushi, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kosuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Morota, Tomokatsu, Nakazawa, Satoru, Namiki, Noriyuki, Noda, Hirotomo, Noguchi, Rina, Ogawa, Naoko, Ogawa, Kazunori, Okada, Tatsuaki, Okamoto, Chisato, Ono, Go, Ozaki, Masanobu, Saiki, Takanao, Sakatani, Naoya, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Sugita, Seiji, Takei, Yuto, Takeuchi, Hiroshi, Tanaka, Satoshi, Tatsumi, Eri, Terui, Fuyuto, Tsukizaki, Ryudo, Wada, Koji, Yamada, Manabu, Yamada, Tetsuya, Yamamoto, Yukio, Yano, Hajime, Yokota, Yasuhiro, Yoshihara, Keisuke, Yoshikawa, Makoto, Yoshikawa, Kent, Furuya, Shizuho, Hatakeda, Kentaro, Hayashi, Tasuku, Hitomi, Yuya, Kumagai, Kazuya, Miyazaki, Akiko, Nakato, Aiko, Nishimura, Masahiro, Soejima, Hiromichi, Iwamae, Ayako, Yamamoto, Daiki, Yogata, Kasumi, Yoshitake, Miwa, Fukai, Ryota, Usui, Tomohiro, Ireland, Trevor, Connolly, Harold C., Lauretta, Dante S., Tachibana, Shogo, 00898455, Okazaki, Ryuji, Miura, Yayoi N., Takano, Yoshinori, Sawada, Hirotaka, Sakamoto, Kanako, Yada, Toru, Yamada, Keita, Kawagucci, Shinsuke, Matsui, Yohei, Hashizume, Ko, Ishida, Akizumi, Broadley, Michael W., Marty, Bernard, Byrne, David, Füri, Evelyn, Meshik, Alex, Pravdivtseva, Olga, Busemann, Henner, Riebe, My E.I., Gilmour, Jamie, Park, Jisun, Bajo, Ken-ichi, Righter, Kevin, Sakai, Saburo, Sekimoto, Shun, Kitajima, Fumio, Crowther, Sarah A., Iwata, Naoyoshi, Shirai, Naoki, Ebihara, Mitsuru, Yokochi, Reika, Nishiizumi, Kunihiko, Nagao, Keisuke, Lee, Jong Ik, Clay, Patricia, Kano, Akihiro, Caffee, Marc W., Uemura, Ryu, Inagaki, Makoto, Krietsch, Daniela, Maden, Colin, Yamamoto, Mizuki, Fawcett, Lydia, Lawton, Thomas, Nakamura, Tomoki, Naraoka, Hiroshi, Noguchi, Takaaki, Yabuta, Hikaru, Yurimoto, Hisayoshi, Tsuda, Yuichi, Watanabe, Sei-ichiro, Abe, Masanao, Arakawa, Masahiko, Fujii, Atsushi, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kosuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Morota, Tomokatsu, Nakazawa, Satoru, Namiki, Noriyuki, Noda, Hirotomo, Noguchi, Rina, Ogawa, Naoko, Ogawa, Kazunori, Okada, Tatsuaki, Okamoto, Chisato, Ono, Go, Ozaki, Masanobu, Saiki, Takanao, Sakatani, Naoya, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Sugita, Seiji, Takei, Yuto, Takeuchi, Hiroshi, Tanaka, Satoshi, Tatsumi, Eri, Terui, Fuyuto, Tsukizaki, Ryudo, Wada, Koji, Yamada, Manabu, Yamada, Tetsuya, Yamamoto, Yukio, Yano, Hajime, Yokota, Yasuhiro, Yoshihara, Keisuke, Yoshikawa, Makoto, Yoshikawa, Kent, Furuya, Shizuho, Hatakeda, Kentaro, Hayashi, Tasuku, Hitomi, Yuya, Kumagai, Kazuya, Miyazaki, Akiko, Nakato, Aiko, Nishimura, Masahiro, Soejima, Hiromichi, Iwamae, Ayako, Yamamoto, Daiki, Yogata, Kasumi, Yoshitake, Miwa, Fukai, Ryota, Usui, Tomohiro, Ireland, Trevor, Connolly, Harold C., Lauretta, Dante S., and Tachibana, Shogo

Abstract

The Hayabusa2 spacecraft returned to Earth from the asteroid 162173 Ryugu on 6 December 2020. One day after the recovery, the gas species retained in the sample container were extracted and measured on-site and stored in gas collection bottles. The container gas consists of helium and neon with an extraterrestrial ³He/⁴He and ²⁰Ne/²²Ne ratios, along with some contaminant terrestrial atmospheric gases. A mixture of solar and Earth’s atmospheric gas is the best explanation for the container gas composition. Fragmentation of Ryugu grains within the sample container is discussed on the basis of the estimated amount of indigenous He and the size distribution of the recovered Ryugu grains. This is the first successful return of gas species from a near-Earth asteroid.

Published
2022

24. On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective

Author

NAKAMURA, Eizo, primary, KOBAYASHI, Katsura, additional, TANAKA, Ryoji, additional, KUNIHIRO, Tak, additional, KITAGAWA, Hiroshi, additional, POTISZIL, Christian, additional, OTA, Tsutomu, additional, SAKAGUCHI, Chie, additional, YAMANAKA, Masahiro, additional, RATNAYAKE, Dilan M., additional, TRIPATHI, Havishk, additional, KUMAR, Rahul, additional, AVRAMESCU, Maya-Liliana, additional, TSUCHIDA, Hidehisa, additional, YACHI, Yusuke, additional, MIURA, Hitoshi, additional, ABE, Masanao, additional, FUKAI, Ryota, additional, FURUYA, Shizuho, additional, HATAKEDA, Kentaro, additional, HAYASHI, Tasuku, additional, HITOMI, Yuya, additional, KUMAGAI, Kazuya, additional, MIYAZAKI, Akiko, additional, NAKATO, Aiko, additional, NISHIMURA, Masahiro, additional, OKADA, Tatsuaki, additional, SOEJIMA, Hiromichi, additional, SUGITA, Seiji, additional, SUZUKI, Ayako, additional, USUI, Tomohiro, additional, YADA, Toru, additional, YAMAMOTO, Daiki, additional, YOGATA, Kasumi, additional, YOSHITAKE, Miwa, additional, ARAKAWA, Masahiko, additional, FUJII, Atsushi, additional, HAYAKAWA, Masahiko, additional, HIRATA, Naoyuki, additional, HIRATA, Naru, additional, HONDA, Rie, additional, HONDA, Chikatoshi, additional, HOSODA, Satoshi, additional, IIJIMA, Yu-ichi, additional, IKEDA, Hitoshi, additional, ISHIGURO, Masateru, additional, ISHIHARA, Yoshiaki, additional, IWATA, Takahiro, additional, KAWAHARA, Kosuke, additional, KIKUCHI, Shota, additional, KITAZATO, Kohei, additional, MATSUMOTO, Koji, additional, MATSUOKA, Moe, additional, MICHIKAMI, Tatsuhiro, additional, MIMASU, Yuya, additional, MIURA, Akira, additional, MOROTA, Tomokatsu, additional, NAKAZAWA, Satoru, additional, NAMIKI, Noriyuki, additional, NODA, Hirotomo, additional, NOGUCHI, Rina, additional, OGAWA, Naoko, additional, OGAWA, Kazunori, additional, OKAMOTO, Chisato, additional, ONO, Go, additional, OZAKI, Masanobu, additional, SAIKI, Takanao, additional, SAKATANI, Naoya, additional, SAWADA, Hirotaka, additional, SENSHU, Hiroki, additional, SHIMAKI, Yuri, additional, SHIRAI, Kei, additional, TAKEI, Yuto, additional, TAKEUCHI, Hiroshi, additional, TANAKA, Satoshi, additional, TATSUMI, Eri, additional, TERUI, Fuyuto, additional, TSUKIZAKI, Ryudo, additional, WADA, Koji, additional, YAMADA, Manabu, additional, YAMADA, Tetsuya, additional, YAMAMOTO, Yukio, additional, YANO, Hajime, additional, YOKOTA, Yasuhiro, additional, YOSHIHARA, Keisuke, additional, YOSHIKAWA, Makoto, additional, YOSHIKAWA, Kent, additional, FUJIMOTO, Masaki, additional, WATANABE, Sei-ichiro, additional, and TSUDA, Yuichi, additional

Published
2022
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25. Hayabusa2 returned samples: A unique and pristine record of outer Solar System materials from asteroid Ryugu

Author

Ito, Motoo, primary, Tomioka, Naotaka, additional, Uesugi, Masayuki, additional, Yamaguchi, Akira, additional, Shirai, Naoki, additional, Ohigashi, Takuji, additional, Liu, Ming-Chang, additional, Greenwood, Richard, additional, Kimura, Makoto, additional, Imae, Naoya, additional, Uesugi, Kentaro, additional, Nakato, Aiko, additional, Yogata, Kasumi, additional, Yuzawa, Hayato, additional, Kodama, Yu, additional, Tsuchiyama, Akira, additional, Yasutake, Masahiro, additional, Findlay, Ross, additional, Franchi, Ian, additional, Malley, James, additional, McCain, Kaitlyn, additional, Matsuda, Nozomi, additional, McKeegan, Kevin, additional, Hirahara, Kaori, additional, Takeuchi, Akihisa, additional, Sekimoto, Shun, additional, Sakurai, Ikuya, additional, Okada, Ikuo, additional, Karouji, Yuzuru, additional, Arakawa, Masahiko, additional, Fujii, Atsushi, additional, Fujimoto, Masaki, additional, Hayakawa, Masahiko, additional, Hirata, Naoyuki, additional, Hirata, Naru, additional, Honda, Rie, additional, Honda, Chikatoshi, additional, Hosoda, Satoshi, additional, Iijima, Yu-ichi, additional, Ikeda, Hitoshi, additional, Ishiguro, Masateru, additional, Ishihara, Yoshiaki, additional, Iwata, Takahiro, additional, Kawahara, Kosuke, additional, Kikuchi, Shota, additional, Kitazato, Kohei, additional, Matsumoto, Koji, additional, Matsuoka, Moe, additional, Michikami, Tatsuhiro, additional, Mimasu, Yuya, additional, Miura, Akira, additional, Mori, Osamu, additional, Morota, Tmokatsu, additional, Nakazawa, Satoru, additional, Namiki, Noriyuki, additional, Noda, Hirotomo, additional, Noguchi, Rina, additional, Ogawa, Naoko, additional, Ogawa, Kazunori, additional, Okada, Tatsuaki, additional, Okamoto, Chisato, additional, Ono, Go, additional, Ozaki, Masanobu, additional, Saiki, Takanao, additional, Sakatani, Naoya, additional, Sawada, Hirotaka, additional, Senshu, Hiroki, additional, Shimaki, Yuri, additional, Shirai, Kei, additional, Sugita, Seiji, additional, Takei, Yuto, additional, Takeuchi, Hiroshi, additional, Tanaka, Satoshi, additional, Tatsumi, Eri, additional, Terui, Fuyuto, additional, Tsukizaki, Ryudo, additional, Wada, Koji, additional, Yamada, Manabu, additional, Yamada, Tetsuya, additional, Yamamoto, Yukio, additional, Yano, Hajime, additional, Yokota, Yasuhiro, additional, Yoshihara, Keisuke, additional, Yoshikawa, Makoto, additional, Yoshikawa, Kent, additional, Fukai, Ryota, additional, Furuya, Shizuho, additional, Hatakeda, Kentaro, additional, Hayashi, Tasuku, additional, Hitomi, Yuya, additional, Kumagai, Kazuya, additional, Miyazaki, Akiko, additional, Nishimura, Masahiro, additional, Soejima, Hiromichi, additional, Iwamae, Ayako, additional, Yamamoto, Daiki, additional, Yoshitake, Miwa, additional, Yada, Toru, additional, Abe, Masanao, additional, Usui, Tomohiro, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2022
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26. Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid Ryugu

Author

Yada, Toru, primary, Abe, Masanao, additional, Okada, Tatsuaki, additional, Nakato, Aiko, additional, Yogata, Kasumi, additional, Miyazaki, Akiko, additional, Hatakeda, Kentaro, additional, Kumagai, Kazuya, additional, Nishimura, Masahiro, additional, Hitomi, Yuya, additional, Soejima, Hiromichi, additional, Yoshitake, Miwa, additional, Iwamae, Ayako, additional, Furuya, Shizuho, additional, Uesugi, Masayuki, additional, Karouji, Yuzuru, additional, Usui, Tomohiro, additional, Hayashi, Tasuku, additional, Yamamoto, Daiki, additional, Fukai, Ryota, additional, Sugita, Seiji, additional, Cho, Yuichiro, additional, Yumoto, Koki, additional, Yabe, Yuna, additional, Bibring, Jean-Pierre, additional, Pilorget, Cedric, additional, Hamm, Vincent, additional, Brunetto, Rosario, additional, Riu, Lucie, additional, Lourit, Lionel, additional, Loizeau, Damien, additional, Lequertier, Guillaume, additional, Moussi-Soffys, Aurelie, additional, Tachibana, Shogo, additional, Sawada, Hirotaka, additional, Okazaki, Ryuji, additional, Takano, Yoshinori, additional, Sakamoto, Kanako, additional, Miura, Yayoi N., additional, Yano, Hajime, additional, Ireland, Trevor R., additional, Yamada, Tetsuya, additional, Fujimoto, Masaki, additional, Kitazato, Kohei, additional, Namiki, Noriyuki, additional, Arakawa, Masahiko, additional, Hirata, Naru, additional, Yurimoto, Hisayoshi, additional, Nakamura, Tomoki, additional, Noguchi, Takaaki, additional, Yabuta, Hikaru, additional, Naraoka, Hiroshi, additional, Ito, Motoo, additional, Nakamura, Eizo, additional, Uesugi, Kentaro, additional, Kobayashi, Katsura, additional, Michikami, Tatsuhiro, additional, Kikuchi, Hiroshi, additional, Hirata, Naoyuki, additional, Ishihara, Yoshiaki, additional, Matsumoto, Koji, additional, Noda, Hirotomo, additional, Noguchi, Rina, additional, Shimaki, Yuri, additional, Shirai, Kei, additional, Ogawa, Kazunori, additional, Wada, Koji, additional, Senshu, Hiroki, additional, Yamamoto, Yukio, additional, Morota, Tomokatsu, additional, Honda, Rie, additional, Honda, Chikatoshi, additional, Yokota, Yasuhiro, additional, Matsuoka, Moe, additional, Sakatani, Naoya, additional, Tatsumi, Eri, additional, Miura, Akira, additional, Yamada, Manabu, additional, Fujii, Atsushi, additional, Hirose, Chikako, additional, Hosoda, Satoshi, additional, Ikeda, Hitoshi, additional, Iwata, Takahiro, additional, Kikuchi, Shota, additional, Mimasu, Yuya, additional, Mori, Osamu, additional, Ogawa, Naoko, additional, Ono, Go, additional, Shimada, Takanobu, additional, Soldini, Stefania, additional, Takahashi, Tadateru, additional, Takei, Yuto, additional, Takeuchi, Hiroshi, additional, Tsukizaki, Ryudo, additional, Yoshikawa, Kent, additional, Terui, Fuyuto, additional, Nakazawa, Satoru, additional, Tanaka, Satoshi, additional, Saiki, Takanao, additional, Yoshikawa, Makoto, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2021
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27. Ryugu: A brand-new planetary sample returned from a C-type asteroid

Author

Yada, Toru, primary, Abe, Masanao, additional, Okada, Tatsuaki, additional, Nakato, Aiko, additional, Yogata, Kasumi, additional, Miyazaki, Akiko, additional, Hatakeda, Kentaro, additional, Kumagai, Kazuya, additional, Nishimura, Masahiro, additional, Hitomi, Yuya, additional, Soejima, Hiromichi, additional, Yoshitake, Miwa, additional, Iwamae, Ayako, additional, Furuya, Shizuho, additional, Uesugi, Masayuki, additional, Karouji, Yuzuru, additional, Usui, Tomohiro, additional, Hayashi, Tasuku, additional, Yamamoto, Daiki, additional, Fukai, Ryota, additional, Sugita, Seiji, additional, Cho, Yuichiro, additional, Yumoto, Koki, additional, Yabe, Yuna, additional, Bibring, Jean-Pierre, additional, Pilorget, Cedric, additional, Hamm, Vincent, additional, Brunetto, Rosario, additional, Riu, Lucie, additional, Lourit, Lionel, additional, Loizeau, Damien, additional, Lequertier, Guillaume, additional, Moussi-Soffys, Aurelie, additional, Tachibana, Shogo, additional, Sawada, Hirotaka, additional, Okazaki, Ryuji, additional, Takano, Yoshinori, additional, Sakamoto, Kanako, additional, Miura, Yayoi, additional, Yano, Hajime, additional, Ireland, Trevor, additional, Yamada, Tetsuya, additional, Fujimoto, Masaki, additional, Kitazato, Kohei, additional, Namiki, Noriyuki, additional, Arakawa, Masahiko, additional, Hirata, Naru, additional, Yurimoto, Hisayoshi, additional, Nakamura, Tomoki, additional, Noguchi, Takaaki, additional, Yabuta, Hikaru, additional, Naraoka, Hiroshi, additional, Ito, Motoo, additional, Nakamura, Eizo, additional, Uesugi, Kentaro, additional, Kobayashi, Katsura, additional, Michikami, Tatsuhiro, additional, Kikuchi, Hiroshi, additional, Hirata, Naoyuki, additional, Ishihara, Yoshiaki, additional, Matsumoto, Koji, additional, Noda, Hirotomo, additional, Noguchi, Rina, additional, Shimaki, Yuri, additional, Ogawa, Kazunori, additional, Shirai, Kei, additional, Wada, Koji, additional, Senshu, Hiroki, additional, Yamamoto, Yukio, additional, Morota, Tomokatsu, additional, Honda, Rie, additional, Honda, Chikatoshi, additional, Yokota, Yasuhiro, additional, Matsuoka, Moe, additional, Sakatani, Naoya, additional, Tatsumi, Eri, additional, Miura, Akira, additional, Yamada, Manabu, additional, Fujii, Atsushi, additional, Hirose, Chikako, additional, Hosoda, Satoshi, additional, Ikeda, Hitoshi, additional, Iwata, Takahiro, additional, Kikuchi, Shota, additional, Mimasu, Yuya, additional, Mori, Osamu, additional, Ogawa, Naoko, additional, Ono, Go, additional, Shimada, Takanobu, additional, Soldini, Stefania, additional, Takahashi, Tadateru, additional, Takei, Yuto, additional, Takeuchi, Hiroshi, additional, Tsukizaki, Ryudo, additional, Yoshikawa, Kent, additional, Terui, Fuyuto, additional, Nakazawa, Satoru, additional, Tanaka, Satoshi, additional, Saiki, Takanao, additional, Yoshikawa, Makoto, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2021
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31. A pristine record of outer Solar System materials from asteroid Ryugu’s returned sample

Author

Ito, Motoo, Tomioka, Naotaka, Uesugi, Masayuki, Yamaguchi, Akira, Shirai, Naoki, Ohigashi, Takuji, Liu, Ming-Chang, Greenwood, Richard C., Kimura, Makoto, Imae, Naoya, Uesugi, Kentaro, Nakato, Aiko, Yogata, Kasumi, Yuzawa, Hayato, Kodama, Yu, Tsuchiyama, Akira, Yasutake, Masahiro, Findlay, Ross, Franchi, Ian A., Malley, James A., McCain, Kaitlyn A., Matsuda, Nozomi, McKeegan, Kevin D., Hirahara, Kaori, Takeuchi, Akihisa, Sekimoto, Shun, Sakurai, Ikuya, Okada, Ikuo, Karouji, Yuzuru, Arakawa, Masahiko, Fujii, Atsushi, Fujimoto, Masaki, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kosuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Mori, Osamu, Morota, Tomokatsu, Nakazawa, Satoru, Namiki, Noriyuki, Noda, Hirotomo, Noguchi, Rina, Ogawa, Naoko, Ogawa, Kazunori, Okada, Tatsuaki, Okamoto, Chisato, Ono, Go, Ozaki, Masanobu, Saiki, Takanao, Sakatani, Naoya, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Sugita, Seiji, Takei, Yuto, Takeuchi, Hiroshi, Tanaka, Satoshi, Tatsumi, Eri, Terui, Fuyuto, Tsukizaki, Ryudo, Wada, Koji, Yamada, Manabu, Yamada, Tetsuya, Yamamoto, Yukio, Yano, Hajime, Yokota, Yasuhiro, Yoshihara, Keisuke, Yoshikawa, Makoto, Yoshikawa, Kent, Fukai, Ryota, Furuya, Shizuho, Hatakeda, Kentaro, Hayashi, Tasuku, Hitomi, Yuya, Kumagai, Kazuya, Miyazaki, Akiko, Nishimura, Masahiro, Soejima, Hiromichi, Iwamae, Ayako, Yamamoto, Daiki, Yoshitake, Miwa, Yada, Toru, Abe, Masanao, Usui, Tomohiro, Watanabe, Sei-ichiro, Tsuda, Yuichi, Ito, Motoo, Tomioka, Naotaka, Uesugi, Masayuki, Yamaguchi, Akira, Shirai, Naoki, Ohigashi, Takuji, Liu, Ming-Chang, Greenwood, Richard C., Kimura, Makoto, Imae, Naoya, Uesugi, Kentaro, Nakato, Aiko, Yogata, Kasumi, Yuzawa, Hayato, Kodama, Yu, Tsuchiyama, Akira, Yasutake, Masahiro, Findlay, Ross, Franchi, Ian A., Malley, James A., McCain, Kaitlyn A., Matsuda, Nozomi, McKeegan, Kevin D., Hirahara, Kaori, Takeuchi, Akihisa, Sekimoto, Shun, Sakurai, Ikuya, Okada, Ikuo, Karouji, Yuzuru, Arakawa, Masahiko, Fujii, Atsushi, Fujimoto, Masaki, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Rie, Honda, Chikatoshi, Hosoda, Satoshi, Iijima, Yu-ichi, Ikeda, Hitoshi, Ishiguro, Masateru, Ishihara, Yoshiaki, Iwata, Takahiro, Kawahara, Kosuke, Kikuchi, Shota, Kitazato, Kohei, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Mori, Osamu, Morota, Tomokatsu, Nakazawa, Satoru, Namiki, Noriyuki, Noda, Hirotomo, Noguchi, Rina, Ogawa, Naoko, Ogawa, Kazunori, Okada, Tatsuaki, Okamoto, Chisato, Ono, Go, Ozaki, Masanobu, Saiki, Takanao, Sakatani, Naoya, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Sugita, Seiji, Takei, Yuto, Takeuchi, Hiroshi, Tanaka, Satoshi, Tatsumi, Eri, Terui, Fuyuto, Tsukizaki, Ryudo, Wada, Koji, Yamada, Manabu, Yamada, Tetsuya, Yamamoto, Yukio, Yano, Hajime, Yokota, Yasuhiro, Yoshihara, Keisuke, Yoshikawa, Makoto, Yoshikawa, Kent, Fukai, Ryota, Furuya, Shizuho, Hatakeda, Kentaro, Hayashi, Tasuku, Hitomi, Yuya, Kumagai, Kazuya, Miyazaki, Akiko, Nishimura, Masahiro, Soejima, Hiromichi, Iwamae, Ayako, Yamamoto, Daiki, Yoshitake, Miwa, Yada, Toru, Abe, Masanao, Usui, Tomohiro, Watanabe, Sei-ichiro, and Tsuda, Yuichi

Abstract

Volatile and organic-rich C-type asteroids may have been one of the main sources of Earth’s water. Our best insight into their chemistry is currently provided by carbonaceous chondritic meteorites, but the meteorite record is biased: only the strongest types survive atmospheric entry and are then modified by interaction with the terrestrial environment. Here we present the results of a detailed bulk and microanalytical study of pristine Ryugu particles, brought to Earth by the Hayabusa2 spacecraft. Ryugu particles display a close compositional match with the chemically unfractionated, but aqueously altered, CI (Ivuna-type) chondrites, which are widely used as a proxy for the bulk Solar System composition. The sample shows an intricate spatial relationship between aliphatic-rich organics and phyllosilicates and indicates maximum temperatures of ~30 °C during aqueous alteration. We find that heavy hydrogen and nitrogen abundances are consistent with an outer Solar System origin. Ryugu particles are the most uncontaminated and unfractionated extraterrestrial materials studied so far, and provide the best available match to the bulk Solar System composition.

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