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198 results on '"Michikami, Tatsuhiro"'

1. Influx of nitrogen-rich material from the outer Solar System indicated by iron nitride in Ryugu samples

Author

Matsumoto, Toru, Noguchi, Takaaki, Miyake, Akira, Igami, Yohei, Haruta, Mitsutaka, Seto, Yusuke, Miyahara, Masaaki, Tomioka, Naotaka, Saito, Hikaru, Hata, Satoshi, Harries, Dennis, Takigawa, Aki, Nakauchi, Yusuke, Tachibana, Shogo, Nakamura, Tomoki, Matsumoto, Megumi, Ishii, Hope A., Bradley, John P., Ohtaki, Kenta, Dobrică, Elena, Leroux, Hugues, Le Guillou, Corentin, Jacob, Damien, de la Peña, Francisco, Laforet, Sylvain, Marinova, Maya, Langenhorst, Falko, 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, Michikami, Tatsuhiro, Yurimoto, Hisayoshi, Okazaki, Ryuji, Yabuta, Hikaru, Naraoka, Hiroshi, Sakamoto, Kanako, Yada, Toru, Nishimura, Masahiro, Nakato, Aiko, Miyazaki, Akiko, Yogata, Kasumi, Abe, Masanao, Okada, Tatsuaki, Usui, Tomohiro, Yoshikawa, Makoto, Saiki, Takanao, Tanaka, Satoshi, Terui, Fuyuto, Nakazawa, Satoru, Watanabe, Sei-ichiro, and Tsuda, Yuichi

Published
2024
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2. High-Resolution Observations of Bright Boulders on Asteroid Ryugu: 1. Size Frequency Distribution and Morphology

Author

Sugimoto, Chiho, Tatsumi, Eri, Cho, Yuichiro, Morota, Tomokatsu, Honda, Rie, Kameda, Shingo, Yokota, Yosuhiro, Yumoto, Koki, Aoki, Minami, DellaGiustina, Daniella N., Michikami, Tatsuhiro, Hiroi, Takahiro, Domingue, Deborah L., Michel, Patrick, Schröder, Stefan E., Nakamura, Tomoki, Yamada, Manabu, Sakatani, Naoya, Kouyama, Toru, Honda, Chikatoshi, Hayakawa, Masahiko, Matsuoka, Moe, Suzuki, Hidehiko, Yoshioka, Kazuo, Ogawa, Kazunori, Sawada, Hirotaka, Arakawa, Masahiko, Saiki, Takanao, Imamura, Hiroshi, Takagi, Yasuhiko, Yano, Hajime, Shirai, Kei, Okamoto, Chisato, Tsuda, Yuichi, Nakazawa, Satoru, Iijima, Yuichi, and Sugita, Seiji

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

The near-Earth asteroid (162173) Ryugu displays a Cb-type average spectrum and a very low average normal albedo of 0.04. Although the majority of boulders on Ryugu have reflectance spectra and albedo similar to the Ryugu average, a small fraction of boulders exhibit anomalously high albedo and distinctively different spectra. A previous study (Tatsumi et al., 2021) based on the 2.7-km observations and a series of low-altitude (down to 68 m) descent observations conducted prior to the first touchdown have shown that the spectra of these anomalous boulders can be classified into two distinct groups corresponding to S and C type asteroids. The former originate most likely from an impactor that collided with Ryugu's parent body, whereas the latter may be from portions of Ryugu's parent body that experienced a different temperature history than experienced by the majority of boulder materials. In this study, we analyzed images captured after the first touchdown to determine the quantitative properties of these bright boulders on Ryugu. We measured the sizes of more than a thousand bright boulders and characterized the morphologic properties of the largest ones. Analyses revealed many properties of bright boulders important for the evolution of Ryugu and its parent body. The size-frequency distributions of S- and C-type bright boulders follow power laws. We obtained the ratios of the total volume and surface area of S-type bright boulders to those of average dark boulders on the Ryugu surface. Also, many of the bright boulders are embedded in a larger substrate boulder, suggesting that they have experienced mixing and conglomeration with darker fragments on the parent body, rather than gently landing on Ryugu during or after its formation by reaccumulation. This is consistent with the hypothesis that S-type bright boulders were likely mixed during and/or before a catastrophic disruption., Comment: 19 pages, 11 figures, 3 Tables, published in Icarus, 369, 15 November, 2021, 114529

Published
2021
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3. High-Resolution Observations of Bright Boulders on Asteroid Ryugu: 2. Spectral Properties

Author

Sugimoto, Chiho, Tatsumi, Eri, Cho, Yuichiro, Morota, Tomokatsu, Honda, Rie, Kameda, Shingo, Yokota, Yosuhiro, Yumoto, Koki, Aoki, Minami, DellaGiustina, Daniella N., Michikami, Tatsuhiro, Hiroi, Takahiro, Domingue, Deborah L., Michel, Patrick, Schröder, Stefan, Nakamura, Tomoki, Yamada, Manabu, Sakatani, Naoya, Kouyama, Toru, Honda, Chikatoshi, Hayakawa, Masahiko, Matsuoka, Moe, Suzuki, Hidehiko, Yoshioka, Kazuo, Ogawa, Kazunori, Sawada, Hirotaka, Arakawa, Masahiko, Saiki, Takanao, Imamura, Hiroshi, Takagi, Yasuhiko, Yano, Hajime, Shirai, Kei, Okamoto, Chisato, Tsuda, Yuichi, Nakazawa, Satoru, Iijima, Yuichi, and Sugita, Seiji

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Many small boulders with reflectance values higher than 1.5 times the average reflectance have been found on the near-Earth asteroid 162173 Ryugu. Based on their visible wavelength spectral differences, Tatsumi et al. (2021) defined two bright boulder classes: C-type and S-type. These two classifications of bright boulders have different size distributions and spectral trends. In this study, we measured the spectra of 79 bright boulders and investigated their detailed spectral properties. Analyses obtained a number of important results. First, S-type bright boulders on Ryugu have spectra that are similar to those found for two different ordinary chondrites with different initial spectra that have been experimentally space weathered the same way. This suggests that there may be two populations of S-type bright boulders on Ryugu, perhaps originating from two different impactors that hit its parent body. Second, the model space-weathering ages of meter-size S-type bright boulders, based on spectral change rates derived in previous experimentally irradiated ordinary chondrites, are 0.1-1 Myr, which is consistent with the crater retention age (

Published
2021
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4. Three-dimensional textures of Ryugu samples and their implications for the evolution of aqueous alteration in the Ryugu parent body

Author

Tsuchiyama, Akira, Matsumoto, Megumi, Matsuno, Junya, Yasutake, Masahiro, Nakamura, Tomoki, Noguchi, Takaaki, Miyake, Akira, Uesugi, Kentaro, Takeuchi, Akihisa, Okumura, Shota, Fujioka, Yuri, Sun, Mingqi, Takigawa, Aki, Matsumoto, Toru, Enju, Satomi, Mitsukawa, Itaru, Enokido, Yuma, Kawamoto, Tatsuhiko, Mikouchi, Takeshi, Michikami, Tatsuhiro, Morita, Tomoyo, Kikuiri, Mizuha, Amano, Kana, Kagawa, Eiichi, Rubino, Stefano, Dionnet, Zelia, Aléon-Toppani, Alice, Brunetto, Rosario, Zolensky, Michael E., Nakano, Tsukasa, Nakano, Naoto, Yurimoto, Hisayoshi, Okazaki, Ryuji, Yabuta, Hikaru, Naraoka, Hiroshi, Sakamoto, Kanako, Yada, Toru, Nishimura, Masahiro, Nakato, Aiko, Miyazaki, Akiko, Yogata, Kasumi, Abe, Masanao, Okada, Tatsuaki, Usui, Tomohiro, Yoshikawa, Makoto, Saiki, Takanao, Tanaka, Satoshi, Nakazawa, Satoru, Terui, Fuyuto, Tachibana, Shogo, Watanabe, Sei-ichiro, and Tsuda, Yuichi

Published
2024
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6. 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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7. 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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8. The Western Bulge of 162173 Ryugu Formed as a Result of a Rotationally Driven Deformation Process

Author

Hirabayashi, Masatoshi, Tatsumi, Eri, Miyamoto, Hideaki, Komatsu, Goro, Sugita, Seiji, Watanabe, Sei-ichiro, Scheeres, Daniel J., Barnouin, Olivier S., Michel, Patrick, Honda, Chikatoshi, Michikami, Tatsuhiro, Cho, Yuichiro, Morota, Tomokatsu, Hirata, Naru, Hirata, Naoyuki, Sakatani, Naoya, Schwartz, Stephen R., Honda, Rie, Yokota, Yasuhiro, Kameda, Shingo, Suzuki, Hidehiko, Kouyama, Toru, Hayakawa, Masahiko, Matsuoka, Moe, Yoshioka, Kazuo, Ogawa, Kazunori, Sawada, Hirotaka, Yoshikawa, Makoto, and Tsuda, Yuichi

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

162173 Ryugu, the target of Hayabusa2, has a round shape with an equatorial ridge, which is known as a spinning top-shape. A strong centrifugal force is a likely contributor to Ryugu's top-shaped features. Observations by Optical Navigation Camera onboard Hayabusa2 show a unique longitudinal variation in geomorphology; the western side of this asteroid, later called the western bulge, has a smooth surface and a sharp equatorial ridge, compared to the other side. Here, we propose a structural deformation process that generated the western bulge. Applying the mission-derived shape model, we employ a finite element model technique to analyze the locations that experience structural failure within the present shape. Assuming that materials are uniformly distributed, our model shows the longitudinal variation in structurally failed regions when the spin period is shorter than ~3.75 h. Ryugu is structurally intact in the subsurface region of the western bulge while other regions are sensitive to structural failure. We infer that this variation is indicative of the deformation process that occurred in the past, and the western bulge is more relaxed structurally than the other region. Our analysis also shows that this deformation process might occur at a spin period between ~3.5 h and ~3.0 h, providing the cohesive strength ranging between ~4 Pa and ~10 Pa., Comment: 8 pages, 5 figures, published in the Astrophysical Journal Letters, 874, 1, L10

Published
2019
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9. Shape and Rotational Motion Models for Tumbling and Monolithic Asteroid 2012 $\mathrm{TC_4}$:High Time Resolution Lightcurve with the Tomo-e Gozen Camera

Author

Urakawa, Seitaro, Ohsawa, Ryou, Sako, Shigeyuki, Okumura, Shin-ichiro, Sakurai, Yuri, Takahashi, Jun, Imamura, Kazuyoshi, Naito, Hiroyuki, Watanabe, Fumitake, Nagayoshi, Ryoma, Murakami, Yasuhiko, Okazaki, Ryo, Sekiguchi, Tomohiko, Ishiguro, Masateru, Michikami, Tatsuhiro, and Yoshikawa, Makoto

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We present visible and near-infrared observations of a near-Earth object (NEO), 2012 $\mathrm{TC_4}$. The NEO 2012 $\mathrm{TC_4}$ approached close to the Earth at a distance of about 50,000 km in October 2017. This close approach provided a practical exercise for planetary defense. This apparition was also an appropriate opportunity to investigate 2012 $\mathrm{TC_4}$, which is a monolithic asteroid \citep{Polishook13}. We conducted the observation campaign of 2012 $\mathrm{TC_4}$ using six small- and medium-sized telescopes. The multiband photometry analysis showed that the taxonomic class of 2012 $\mathrm{TC_4}$ to be an X-type. In particular, we successfully obtained the high time resolution lightcurve of 2012 $\mathrm{TC_4}$ with the Tomo-e Gozen camera, which is the world's first wide-field CMOS camera, mounted on the 1.05 m Schmidt telescope at Kiso Observatory. The shape and rotational motion models of 2012 $\mathrm{TC_4}$ were derived from the lightcurve. When 2012 $\mathrm{TC_4}$ was assumed to be a triaxial ellipsoid, the rotational and precession periods were 8.47 $\pm$ 0.01 min and 12.25 $\pm$ 0.01 min, respectively, with the long axis mode. This indicates that 2012 $\mathrm{TC_4}$ is a tumbling and monolithic asteroid. The shape models showed that the plausible axial lengths to be 6.2 $\times$ 8.0 $\times$ 14.9~m or 3.3 $\times$ 8.0 $\times$ 14.3~m. The flattened and elongated shape indicates that 2012 $\mathrm{TC_4}$ is a fragment produced by a impact event. We also estimated the excitation timescale, which implied that the impact event happened within $\sim$3 $\times$ 10$^{5}$ yr and 2012 $\mathrm{TC_4}$ has a fresh surface., Comment: 20 pages, 7 figures

Published
2019
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10. Nonequilibrium spherulitic magnetite in the Ryugu samples

Author

Dobrică, Elena, Ishii, Hope A., Bradley, John P., Ohtaki, Kenta, Brearley, Adrian J., Noguchi, Takaaki, Matsumoto, Toru, Miyake, Akira, Igami, Yohei, Haruta, Mitsutaka, Saito, Hikaru, Hata, Satoshi, Seto, Yusuke, Miyahara, Masaaki, Tomioka, Naotaka, 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, Yurimoto, Hisayoshi, Okazaki, Ryuji, Yabuta, Hikaru, Naraoka, Hiroshi, Sakamoto, Kanako, Tachibana, Shogo, Yada, Toru, Nishimura, Masahiro, Nakato, Aiko, Miyazaki, Akiko, Yogata, Kasumi, Abe, Masanao, Okada, Tatsuaki, Usui, Tomohiro, Yoshikawa, Makoto, Saiki, Takanao, Tanaka, Satoshi, Terui, Fuyuto, Nakazawa, Satoru, Watanabe, Sei-ichiro, and Tsuda, Yuichi

Published
2023
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12. 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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13. Asteroid Ryugu Before the Hayabusa2 Encounter

Author

Wada, Koji, Grott, Matthias, Michel, Patrick, Walsh, Kevin J., Barucci, Antonella M., Biele, Jens, Blum, Jürgen, Ernst, Carolyn M., Grundmann, Jan T., Gundlach, Bastian, Hagermann, Axel, Hamm, Maximilian, Jutzi, Martin, Kim, Myung-Jin, Kührt, Ekkehard, Corre, Lucille Le, Libourel, Guy, Lichtenheldt, Roy, Maturilli, Alessandro, Messenger, Scott R., Michikami, Tatsuhiro, Miyamoto, Hideaki, Mottola, Stefano, Nakamura, Akiko M., Müller, Thomas, Nittler, Larry R., Ogawa, Kazunori, Okada, Tatsuaki, Palomba, Ernesto, Sakatani, Naoya, Schröder, Stefan, Senshu, Hiroki, Takir, Driss, and Zolensky, Michael E.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

Asteroid (162173) Ryugu is the target object of Hayabusa2, an asteroid exploration and sample return mission led by Japan Aerospace Exploration Agency (JAXA). Ground-based observations indicate that Ryugu is a C-type near-Earth asteroid with a diameter of less than 1 km, but the knowledge of its detailed properties is still very limited. This paper summarizes our best understanding of the physical and dynamical properties of Ryugu based on remote sensing and theoretical modeling. This information is used to construct a design reference model of the asteroid that is used for formulation of mission operations plans in advance of asteroid arrival. Particular attention is given to the surface properties of Ryugu that are relevant to sample acquisition. This reference model helps readers to appropriately interpret the data that will be directly obtained by Hayabusa2 and promotes scientific studies not only for Ryugu itself and other small bodies but also for the Solar System evolution that small bodies shed light on., Comment: 62 pages, 10 figures, 8 tables. Submitted to Space Science Reviews, on 6 April 2018

Published
2018

14. Site selection for the Hayabusa2 artificial cratering and subsurface material sampling on Ryugu

Author

Kikuchi, Shota, Watanabe, Sei-ichiro, Wada, Koji, Saiki, Takanao, Yabuta, Hikaru, Sugita, Seiji, Abe, Masanao, Arakawa, Masahiko, Cho, Yuichiro, Hayakawa, Masahiko, Hirata, Naoyuki, Hirata, Naru, Honda, Chikatoshi, Honda, Rie, Ishibashi, Ko, Ishihara, Yoshiaki, Iwata, Takahiro, Kadono, Toshihiko, Kameda, Shingo, Kitazato, Kohei, Kouyama, Toru, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Mimasu, Yuya, Miura, Akira, Morota, Tomokatsu, Nakamura, Tomoki, Nakazawa, Satoru, Namiki, Noriyuki, Noguchi, Rina, Ogawa, Kazunori, Ogawa, Naoko, Okada, Tatsuaki, Ono, Go, Sakatani, Naoya, Sawada, Hirotaka, Senshu, Hiroki, Shimaki, Yuri, Shirai, Kei, Tachibana, Shogo, Takei, Yuto, Tanaka, Satoshi, Tatsumi, Eri, Terui, Fuyuto, Yamada, Manabu, Yamamoto, Yukio, Yokota, Yasuhiro, Yoshikawa, Kent, Yoshikawa, Makoto, and Tsuda, Yuichi

Published
2022
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15. Three-axial shape distributions of pebbles, cobbles and boulders smaller than a few meters on asteroid Ryugu

Author

Michikami, Tatsuhiro, Hagermann, Axel, Morota, Tomokatsu, Yokota, Yasuhiro, Urakawa, Seitaro, Okamura, Hiroyuki, Tanabe, Naoya, Yumoto, Koki, Ebihara, Tatsuki, Cho, Yuichiro, Ernst, Carolyn M., Hayakawa, Masahiko, Hirabayashi, Masatoshi, Hirata, Naru, Honda, Chikatoshi, Honda, Rie, Kameda, Shingo, Kanamaru, Masanori, Kikuchi, Hiroshi, Kikuchi, Shota, Kouyama, Toru, Matsuoka, Moe, Miyamoto, Hideaki, Noguchi, Takaaki, Noguchi, Rina, Ogawa, Kazunori, Okada, Tatsuaki, Sakatani, Naoya, Sasaki, Sho, Sawada, Hirotaka, Sugimoto, Chiho, Suzuki, Hidehiko, Tanaka, Satoshi, Tatsumi, Eri, Tsuchiyama, Akira, Tsuda, Yuichi, Watanabe, Sei-ichiro, Yamada, Manabu, Yoshikawa, Makoto, Yoshioka, Kazuo, and Sugita, Seiji

Published
2022
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16. Anisotropic Ejection from Active Asteroid P/2010 A2: An Implication of Impact Shattering on an Asteroid

Author

Kim, Yoonyoung, Ishiguro, Masateru, Michikami, Tatsuhiro, and Nakamura, Akiko M.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We revisited a mass ejection phenomenon that occurred in asteroid P/2010 A2 in terms of the dynamical properties of the dust particles and large fragments. We constructed a model assuming anisotropic ejection within a solid cone-shaped jet and succeeded in reproducing the time-variant features in archival observational images over ~3 years from 2010 January to 2012 October. When we assumed that the dust particles and fragments were ejected in the same direction from a point where no object had been detected in any observations, the anisotropic model can explain all of the observations including (i) the unique dust cloud morphology, (ii) the trail surface brightness and (iii) the motions of the fragments. Our results suggest that the original body was shattered by an impact with the specific energy of Q* <~ 350 J/kg, and remnants of slow antipodal ejecta (i.e., anisotropic ejection in our model) were observed as P/2010 A2. The observed quantities are consistent with those obtained through laboratory impact experiments, supporting the idea that the P/2010 A2 event is the first evidence of the impact shattering occurred in the present main asteroid belt., Comment: accepted for publication in The Astronomical Journal

Published
2017
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17. 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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18. Incipient space weathering on asteroid 162173 Ryugu recorded by pyrrhotite

Author

Harries, Dennis, primary, Matsumoto, Toru, additional, Langenhorst, Falko, additional, Noguchi, Takaaki, additional, Miyake, Akira, additional, Igami, Yohei, additional, Haruta, Mitsutaka, additional, Seto, Yusuke, additional, Miyahara, Masaaki, additional, Tomioka, Naotaka, additional, Saito, Hikaru, additional, Hata, Satoshi, additional, Takigawa, Aki, additional, Nakauchi, Yusuke, additional, Tachibana, Shogo, additional, Nakamura, Tomoki, additional, Matsumoto, Megumi, additional, Ishii, Hope A., additional, Bradley, John P., additional, Ohtaki, Kenta, additional, Dobrică, Elena, additional, Leroux, Hugues, additional, Le Guillou, Corentin, additional, Jacob, Damien, additional, de la Peña, Francisco, additional, Laforet, Sylvain, additional, Mouloud, Bahae‐eddine, additional, Marinova, Maya, additional, Beck, Pierre, additional, Phan, Van T. H., 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, Michikami, Tatsuhiro, additional, Yurimoto, Hisayoshi, additional, Okazaki, Ryuji, additional, Yabuta, Hikaru, additional, Naraoka, Hiroshi, additional, Sakamoto, Kanako, additional, Yada, Toru, additional, Nishimura, Masahiro, additional, Nakato, Aiko, additional, Miyazaki, Akiko, additional, Yogata, Kasumi, additional, Abe, Masanao, additional, Okada, Tatsuaki, additional, Usui, Tomohiro, additional, Yoshikawa, Makoto, additional, Saiki, Takanao, additional, Tanaka, Satoshi, additional, Terui, Fuyuto, additional, Nakazawa, Satoru, additional, Watanabe, Sei‐ichiro, additional, and Tsuda, Yuichi, additional

Published
2024
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19. Development of image texture analysis technique for boulder distribution measurements: Applications to asteroids Ryugu and Itokawa

Author

Tanabe, Naoya, Cho, Yuichiro, Tatsumi, Eri, Ebihara, Tatsuki, Yumoto, Koki, Michikami, Tatsuhiro, Miyamoto, Hideaki, Morota, Tomokatsu, Honda, Chikatoshi, Michel, Patrick, Otto, Katharina, Barnouin, Olivier, Yoshioka, Kazuo, Sawada, Hirotaka, Yokota, Yasuhiro, Sakatani, Naoya, Hayakawa, Masahiro, Honda, Rie, Kameda, Shingo, Matsuoka, Moe, Yamada, Manabu, Kouyama, Toru, Suzuki, Hidehiko, Ogawa, Kazunori, and Sugita, Seiji

Published
2021
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21. In situ investigation of an organic micro‐globule and its mineralogical context within a Ryugu “sand” grain

Author

Phan, Van T. H., primary, Beck, Pierre, additional, Rebois, Rolando, additional, Quirico, Eric, additional, Noguchi, Takaaki, additional, 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, Abreu, Neyda M., additional, Gray, Jennifer, additional, Zega, Thomas, additional, Zanetta, Pierre‐M., additional, Thompson, Michelle S., additional, Stroud, Rhonda, additional, Mathurin, Jérémie, additional, Dazzi, Alexandre, additional, Dartois, Emmanuel, additional, Engrand, Cécile, 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, Nakazawa, Satoru, additional, Okada, Tatsuaki, additional, Saiki, Takanao, additional, Tanaka, Satoshi, additional, Terui, Fuyuto, additional, Yoshikawa, Makoto, additional, Miyazaki, Akiko, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Usui, Tomohiro, additional, Yada, Toru, additional, Yurimoto, Hisayoshi, additional, Nagashima, Kazuhide, additional, Kawasaki, Noriyuki, additional, Sakamotoa, Naoya, additional, Hoppe, Peter, 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
2024
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22. Four‐dimensional‐STEM analysis of the phyllosilicate‐rich matrix of Ryugu samples

Author

Mouloud, Bahae‐eddine, primary, Jacob, Damien, additional, de la Peña, Francisco, additional, Marinova, Maya, additional, Le Guillou, Corentin, additional, Viennet, Jean‐Christophe, additional, Laforet, Sylvain, additional, Leroux, Hugues, additional, Teurtrie, Adrien, additional, Noguchi, Takaaki, additional, 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, Dobrica, Elena, 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, Nakazawa, Satoru, additional, Okada, Tatsuaki, additional, Saiki, Takanao, additional, Tanaka, Satoshi, additional, Terui, Fuyuto, additional, Yoshikawa, Makoto, additional, Miyazaki, Akiko, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Usui, Tomohiro, additional, Yada, Toru, additional, Yurimoto, Hisayoshi, additional, Nagashima, Kazuhide, additional, Kawasaki, Noriyuki, additional, Sakamotoa, 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
2024
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23. Highly porous nature of a primitive asteroid revealed by thermal imaging

Author

Okada, Tatsuaki, Fukuhara, Tetsuya, Tanaka, Satoshi, Taguchi, Makoto, Arai, Takehiko, Senshu, Hiroki, Sakatani, Naoya, Shimaki, Yuri, Demura, Hirohide, Ogawa, Yoshiko, Suko, Kentaro, Sekiguchi, Tomohiko, Kouyama, Toru, Takita, Jun, Matsunaga, Tsuneo, Imamura, Takeshi, Wada, Takehiko, Hasegawa, Sunao, Helbert, Jörn, Müller, Thomas G., Hagermann, Axel, Biele, Jens, Grott, Matthias, Hamm, Maximilian, Delbo, Marco, Hirata, Naru, Hirata, Naoyuki, Yamamoto, Yukio, Sugita, Seiji, Namiki, Noriyuki, Kitazato, Kohei, Arakawa, Masahiko, Tachibana, Shogo, Ikeda, Hitoshi, Ishiguro, Masateru, Wada, Koji, Honda, Chikatoshi, Honda, Rie, Ishihara, Yoshiaki, Matsumoto, Koji, Matsuoka, Moe, Michikami, Tatsuhiro, Miura, Akira, Morota, Tomokatsu, Noda, Hirotomo, Noguchi, Rina, Ogawa, Kazunori, Shirai, Kei, Tatsumi, Eri, Yabuta, Hikaru, Yokota, Yasuhiro, Yamada, Manabu, Abe, Masanao, Hayakawa, Masahiko, Iwata, Takahiro, Ozaki, Masanobu, Yano, Hajime, Hosoda, Satoshi, Mori, Osamu, Sawada, Hirotaka, Shimada, Takanobu, Takeuchi, Hiroshi, Tsukizaki, Ryudo, Fujii, Atsushi, Hirose, Chikako, Kikuchi, Shota, Mimasu, Yuya, Ogawa, Naoko, Ono, Go, Takahashi, Tadateru, Takei, Yuto, Yamaguchi, Tomohiro, Yoshikawa, Kent, Terui, Fuyuto, Saiki, Takanao, Nakazawa, Satoru, Yoshikawa, Makoto, Watanabe, Seiichiro, and Tsuda, Yuichi

Published
2020
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25. Boulder size and shape distributions on asteroid Ryugu

Author

Michikami, Tatsuhiro, Honda, Chikatoshi, Miyamoto, Hideaki, Hirabayashi, Masatoshi, Hagermann, Axel, Irie, Terunori, Nomura, Keita, Ernst, Carolyn M., Kawamura, Masaki, Sugimoto, Kiichi, Tatsumi, Eri, Morota, Tomokatsu, Hirata, Naru, Noguchi, Takaaki, Cho, Yuichiro, Kameda, Shingo, Kouyama, Toru, Yokota, Yasuhiro, Noguchi, Rina, Hayakawa, Masahiko, Hirata, Naoyuki, Honda, Rie, Matsuoka, Moe, Sakatani, Naoya, Suzuki, Hidehiko, Yamada, Manabu, Yoshioka, Kazuo, Sawada, Hirotaka, Hemmi, Ryodo, Kikuchi, Hiroshi, Ogawa, Kazunori, Watanabe, Sei-ichiro, Tanaka, Satoshi, Yoshikawa, Makoto, Tsuda, Yuichi, and Sugita, Seiji

Published
2019
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26. Mineralogy and petrology of fine‐grained samples recovered from the asteroid (162173) 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, Guillou, Corentin Le, additional, Jacob, Damien, additional, de la Peña, Francisco, additional, Laforet, Sylvain, additional, Mouloud, Bahae‐Eddine, 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, Smith, William A., additional, McFadzean, Sam, additional, Martin, Pierre‐Etienne, additional, Bagot, Paul A. J., additional, Fougerouse, Dennis, additional, Saxey, David W., additional, Reddy, Steven, additional, Rickard, William D. 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, Nakazawa, Satoru, additional, Okada, Tatsuaki, additional, Saiki, Takanao, additional, Tanaka, Satoshi, additional, Terui, Fuyuto, additional, Yoshikawa, Makoto, additional, Miyazaki, Akiko, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Usui, Tomohiro, additional, Yada, Toru, additional, Yurimoto, Hisayoshi, additional, Nagashima, Kazuhide, additional, Kawasaki, Noriyuki, additional, Sakamotoa, Naoya, additional, Hoppe, Peter, 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
2023
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27. Phyllosilicates with embedded Fe‐based nanophases in Ryugu and Orgueil

Author

Leroux, Hugues, primary, Le Guillou, Corentin, additional, Marinova, Maya, additional, Laforet, Sylvain, additional, Viennet, Jean‐Christophe, additional, Mouloud, Bahae‐Eddine, additional, Teurtrie, Adrien, additional, de la Peña, Francisco, additional, Jacob, Damien, additional, Hallatt, Daniel, additional, Fernandez, Mario Pelaez, additional, Troadec, David, additional, Noguchi, Takaaki, additional, 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, 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, Nakazawa, Satoru, additional, Okada, Tatsuaki, additional, Saiki, Takanao, additional, Tanaka, Satoshi, additional, Terui, Fuyuto, additional, Yoshikawa, Makoto, additional, Miyazaki, Akiko, additional, Nakato, Aiko, additional, Nishimura, Masahiro, additional, Usui, Tomohiro, additional, Yada, Toru, additional, Yurimoto, Hisayoshi, additional, Nagashima, Kazuhide, additional, Kawasaki, Noriyuki, additional, Sakamotoa, 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
2023
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29. Hayabusa2 Landing Site Selection: Surface Topography of Ryugu and Touchdown Safety

Author

Kikuchi, Shota, Watanabe, Sei-ichiro, Saiki, Takanao, Yabuta, Hikaru, Sugita, Seiji, Morota, Tomokatsu, Hirata, Naru, Hirata, Naoyuki, Michikami, Tatsuhiro, Honda, Chikatoshi, Yokota, Yashuhiro, Honda, Rie, Sakatani, Naoya, Okada, Tatsuaki, Shimaki, Yuri, Matsumoto, Koji, Noguchi, Rina, Takei, Yuto, Terui, Fuyuto, Ogawa, Naoko, Yoshikawa, Kent, Ono, Go, Mimasu, Yuya, Sawada, Hirotaka, Ikeda, Hitoshi, Hirose, Chikako, Takahashi, Tadateru, Fujii, Atsushi, Yamaguchi, Tomohiro, Ishihara, Yoshiaki, Nakamura, Tomoki, Kitazato, Kohei, Wada, Koji, Tachibana, Shogo, Tatsumi, Eri, Matsuoka, Moe, Senshu, Hiroki, Kameda, Shingo, Kouyama, Toru, Yamada, Manabu, Shirai, Kei, Cho, Yuichiro, Ogawa, Kazunori, Yamamoto, Yukio, Miura, Akira, Iwata, Takahiro, Namiki, Noriyuki, Hayakawa, Masahiko, Abe, Masanao, Tanaka, Satoshi, Yoshikawa, Makoto, Nakazawa, Satoru, and Tsuda, Yuichi

Published
2020
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30. 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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31. Re-distribution of volatiles on the airless surface of the C-type carbonaceous asteroid Ryugu.

Author

Matsumoto, Toru, primary, Noguchi, Takaaki, additional, Miyake, Akira, additional, Igami, Yohei, additional, Haruta, Mitsutaka, additional, Seto, Yusuke, additional, Miyahara, Masaaki, additional, Tomioka, Naotaka, additional, Saito, Hikaru, additional, Hata, Satoshi, additional, Harries, Dennis, additional, Takigawa, Aki, additional, Nakauchi, Yuusuke, additional, Tachibana, Shogo, additional, Nakamura, Tomoki, additional, Matsumoto, Megumi, additional, Ishii, Hope, additional, Bradley, John, additional, Ohtaki, Kenta, additional, Dobrică, Elena, additional, Leroux, Hugues, additional, Guillou, Corentin Le, additional, Jacob, Damien, additional, Peña, Francisco de la, additional, Laforet, Sylvain, additional, Marinova, Maya, additional, Langenhorst, Falko, additional, Beck, Pierre, additional, Phan, Thi, additional, Rebois, Rolando, additional, Abreu, Neyda, additional, Gray, Jennifer, additional, Zega, Thomas, additional, Zanetta, Pierre-Marie, additional, Thompson, Michelle, additional, Stroud, Rhonda, additional, Burgess, Katherine, additional, Cymes, Brittany, additional, Bridges, John, additional, Hicks, Leon, additional, Lee, Martin, additional, Daly, Luke, additional, Bland, Phil, additional, Zolensky, Michael, additional, Frank, David, 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, Michikami, Tatsuhiro, additional, Yurimoto, Hisayoshi, additional, Okazaki, Ryuji, additional, Yabuta, Hikaru, additional, Naraoka, Hiroshi, additional, Sakamoto, Kanako, additional, Yada, Toru, additional, Nishimura, Masahiro, additional, Nakato, Aiko, additional, Miyazaki, Akiko, additional, Yogata, Kasumi, additional, Abe, Masanao, additional, Okada, Tatsuaki, additional, Usui, Tomohiro, additional, Yoshikawa, Makoto, additional, Saiki, Takanao, additional, Tanaka, Satoshi, additional, Terui, Fuyuto, additional, Nakazawa, Satoru, additional, Watanabe, Sei-ichiro, additional, and Tsuda, Yuichi, additional

Published
2023
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32. 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

34. 炭素質隕石に対する衝突実験～コンドリュール内部構造とクラック

Author

MICHIKAMI, Tatsuhiro, TSUCHIYAMA, Akira, HAGERMANN, Axel, OTSUKA, Yuji, SASAKI, Osamu, NAKAMURA, Michihiko, OKUMURA, Satoshi, KANO, Harumasa, and HASEGAWA, Sunao

Abstract

令和4年度宇宙科学に関する室内実験シンポジウム（2023年3月6日-7日. オンライン開催), 2023 Symposium on Laboratory Experiment for Space Science (March 6-7, 2023. Online Meeting), 著者人数: 15名, 資料番号:SA6000187041, レポート番号: 41

Published
2023

36. Contributors

Author

Abreu, Neyda M., primary, Alexander, Conel M.O'D., additional, Ali-Lagoa, Victor, additional, Aponte, José C., additional, Barucci, Maria A., additional, Beck, Pierre, additional, Bierhaus, Edward B., additional, Britt, Daniel T., additional, Campins, Humberto, additional, Chaumard, Noel, additional, Clark, Beth E., additional, Clark, Benton, additional, Cloutis, Edward A., additional, Dreyer, Christopher, additional, Dworkin, Jason P., additional, Elkins-Tanton, Linda T., additional, Elsila, Jamie E., additional, Emery, Joshua, additional, Fulchignoni, Marcello, additional, Gertsch, Leslie, additional, Glavin, Daniel P., additional, Hartzell, Christine M., additional, Hendrix, Amanda, additional, Hibbitts, Charles, additional, Howard, Kieren, additional, Izawa, Matthew R.M., additional, Jedicke, Robert, additional, Johnson, Natasha, additional, Johnson, Jerome B., additional, Kulchitsky, Anton V., additional, León, Julia de, additional, Levison, Hal, additional, Licandro, Javier, additional, Love, Stanley G., additional, McAdam, Maggie, additional, McCoy, Timothy, additional, Metzger, Phil, additional, Michikami, Tatsuhiro, additional, Noguchi, Takaaki, additional, Nuth, Joseph A., additional, Peterson, Craig E., additional, Raymond, Carol, additional, Reeves, David M., additional, Rivkin, Andrew, additional, Rubin, Alan, additional, Sanchez, Paul, additional, Sánchez, Juan A., additional, Scheeres, Daniel J., additional, Sercel, Joel C., additional, Takir, Driss, additional, Velbel, Michael A., additional, Walton, Otis, additional, Yabuta, Hikaru, additional, Yoshikawa, Makoto, additional, Zacny, Kris, additional, Zolensky, Michael E., additional, and Zou, Xiao-Duan, additional

Published
2018
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37. 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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38. 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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39. 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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40. 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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41. 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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42. 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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43. 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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44. 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

45. Three-Dimensional Structure of Hayabusa Samples: Origin and Evolution of Itokawa Regolith

Author

Tsuchiyama, Akira, Uesugi, Masayuki, Matsushima, Takashi, Michikami, Tatsuhiro, Kadono, Toshihiko, Nakamura, Tomoki, Uesugi, Kentaro, Nakano, Tsukasa, Sandford, Scott A., Noguchi, Ryo, Matsumoto, Toru, Matsuno, Junya, Nagano, Takashi, Imai, Yuta, Takeuchi, Akihisa, Suzuki, Yoshio, Ogami, Toshihiro, Katagiri, Jun, Ebihara, Mitsuru, Ireland, Trevor R., Kitajima, Fumio, Nagao, Keisuke, Naraoka, Hiroshi, Noguchi, Takaaki, Okazaki, Ryuji, Yurimoto, Hisayoshi, Zolensky, Michael E., Mukai, Toshifumi, Abe, Masanao, Yada, Toru, Fujimura, Akio, Yoshikawa, Makoto, and Kawaguchi, Junichiro

Published
2011
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46. Regolith Migration and Sorting on Asteroid Itokawa

Author

Miyamoto, Hideaki, Yano, Hajime, Scheeres, Daniel J., Abe, Shinsuke, Barnouin-Jha, Olivier, Cheng, Andrew F., Demura, Hirohide, Gaskell, Robert W., Hirata, Naru, Ishiguro, Masateru, Michikami, Tatsuhiro, Nakamura, Akiko M., Nakamura, Ryosuke, Saito, Jun, and Sasaki, Sho

Published
2007
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47. 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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48. 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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50. High-resolution observations of bright boulders on asteroid Ryugu: 2. Spectral properties

Author

Sugimoto, Chiho, primary, Tatsumi, Eri, additional, Cho, Yuichiro, additional, Morota, Tomokatsu, additional, Honda, Rie, additional, Kameda, Shingo, additional, Yokota, Yosuhiro, additional, Yumoto, Koki, additional, Aoki, Minami, additional, DellaGiustina, Daniella N., additional, Michikami, Tatsuhiro, additional, Hiroi, Takahiro, additional, Domingue, Deborah L., additional, Michel, Patrick, additional, Schröder, Stefan E., additional, Nakamura, Tomoki, additional, Yamada, Manabu, additional, Sakatani, Naoya, additional, Kouyama, Toru, additional, Honda, Chikatoshi, additional, Hayakawa, Masahiko, additional, Matsuoka, Moe, additional, Suzuki, Hidehiko, additional, Yoshioka, Kazuo, additional, Ogawa, Kazunori, additional, Sawada, Hirotaka, additional, Arakawa, Masahiko, additional, Saiki, Takanao, additional, Imamura, Hiroshi, additional, Takagi, Yasuhiko, additional, Yano, Hajime, additional, Shirai, Kei, additional, Okamoto, Chisato, additional, Tsuda, Yuichi, additional, Nakazawa, Satoru, additional, Iijima, Yuichi, additional, and Sugita, Seiji, additional

Published
2021
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