Results 41 to 50 of about 1,024 (200)

The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent Planetesimal

The Planetary Science Journal, 2023
We present oxygen isotopic analyses of fragments of the near-Earth C _b -type asteroid Ryugu returned by the Hayabusa2 spacecraft that reinforce the close correspondence between Ryugu and CI chondrites.
Haolan Tang, Edward D. Young, Lauren Tafla, Andreas Pack, Tommaso Di Rocco, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc Chaussidon, Byeon-Gak Choi, Nicolas Dauphas, Andrew M. Davis, Wataru Fujiya, Ryota Fukai, Ikshu Gautam, Makiko K. Haba, Yuki Hibiya, Hiroshi Hidaka, Hisashi Homma, Peter Hoppe, Gary R. Huss, Kiyohiro Ichida, Tsuyoshi Iizuka, Trevor R. Ireland, Akira Ishikawa, Motoo Ito, Shoichi Itoh, Noriyuki Kawasaki, Noriko T. Kita, Kouki Kitajima, Thorsten Kleine, Shintaro Komatani, Alexander N. Krot, Ming-Chang Liu, Yuki Masuda, Kevin D. McKeegan, Mayu Morita, Kazuko Motomura, Frédéric Moynier, Kazuhide Nagashima, Izumi Nakai, Ann Nguyen, Larry Nittler, Morihiko Onose, Changkun Park, Laurette Piani, Liping Qin, Sara S. Russell, Naoya Sakamoto, Maria Schönbächler, Kentaro Terada, Yasuko Terada, Tomohiro Usui, Sohei Wada, Meenakshi Wadhwa, Richard J. Walker, Katsuyuki Yamashita, Qing-Zhu Yin, Tetsuya Yokoyama, Shigekazu Yoneda, Hiroharu Yui, Ai-Cheng Zhang, Tomoki Nakamura, Hiroshi Naraoka, Takaaki Noguchi, Ryuji Okazaki, Kanako Sakamoto, Hikaru Yabuta, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tatsuaki Okada, Toru Yada, Kasumi Yogata, Satoru Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Yuichi Tsuda, Sei-ichiro Watanabe, Makoto Yoshikawa, Shogo Tachibana, Hisayoshi Yurimoto   +89 more
doaj   +1 more source

The role of composition in the spectral evolution of carbonaceous asteroids as informed by Bennu sample return

Meteoritics &Planetary Science, EarlyView.
Abstract Near‐Earth rubble‐pile asteroids Bennu and Ryugu are part of the carbonaceous taxonomic complex (C‐complex), and samples returned from both bodies resemble the most aqueously altered carbonaceous chondrites. However, telescopic and spacecraft visible–near infrared (VIS–NIR) reflectance spectra of Ryugu exhibit a red (positive) spectral slope ...
Ralph E. Milliken, Takahiro Hiroi, Victoria E. Hamilton, Cody D. Schultz, Ed A. Cloutis, Hannah H. Kaplan, Melissa K. Kontogiannis, Nathalia Vega‐Santiago, Dani N. DellaGiustina, Harold C. Connolly Jr., Dante S. Lauretta   +10 more
wiley   +1 more source

Mineralogy, mineral chemistry, and redox equilibria in ten aggregate particles from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract Examination of 10 Bennu aggregate particles has revealed the presence of many phases which taken together can provide constraints on the oxygen fugacity (fO2) of Bennu samples. Phyllosilicates (saponite and serpentine), carbonates, oxides (magnetite, chromite), sulfides (pyrrhotite, pentlandite), phosphate (hydroxyapatite, Na‐Mg‐phosphate ...
K. Righter, J. Gorce, L. Le, K. Thomas‐Keprta, Z.E. Wilbur, L.P. Keller, Z. Gainsforth, T.J. McCoy, T.J. Zega, S.S. Russell, H.C. Connolly Jr., D.S. Lauretta   +11 more
wiley   +1 more source

Hayabusa2 Surface and Shock Layer Radiation from the Australian Airborne Observation [PDF]

Characterization of the radiating flowfield around a spacecraft during its atmospheric entry is of significant value for heat shield design. The reentry of the Hayabusa2 sample return capsule (SRC) was observed from an airborne platform by the Australian
Zander, Fabian, Buttsworth, David, Birch, Byrenn, Lock, Andrew, Ravichandran, Ranjith   +4 more
core   +1 more source

Sample collection from asteroid (162173) Ryugu by Hayabusa2: Implications for surface evolution [PDF]

, 2020
The near-Earth asteroid (162173) Ryugu is thought to be a primitive carbonaceous object that contains hydrated minerals and organic molecules. We report sample collection from Ryugu’s surface by the Hayabusa2 spacecraft on 21 February 2019.
Takaki, N., Matsumoto, K., Morota, T, Suemitsu, M, Tanaka, S, Ohtake, M., Tanaka, S., Noda, H., Hemmi, R, Yoshioka, K, Yamada, M., Sasaki, S, Ono, G, Okada, T, Nakamura, Tomoki, Tsuda, Yuichi, Fujii, A, Saiki, T, Ogawa, Kazunori, Sugita, S, Ernst, CM, Cho, Y., Yano, H, Hirose, C., Komatsu, G, Kato, H., Mimasu, Y., Kitazato, K, Suzuki, H., Iijima, Y., Domingue, D, Okada, Tatsuaki, Matsuoka, M, Kouyama, T, Hirabayashi, Masatoshi, Moroi, K, Yamaguchi, T, Hirata, Naru, Nakamura, T, Noguchi, R, Tanabe, N., Yamamoto, Y., Soldini, S, Takeuchi, H, Terui, F, Takei, Y., Irie, T, Hiroi, T., Sugita, Seiji, Suemitsu, M., Pilorget, Cédric, Kitazato, Kohei, Fujii, A., Ikeda, H, Sawada, H, Tsumura, K, Noda, H, Mizuno, T., Hirose, C, Sakatani, N, Sugimoto, C., Yabuta, H, Yoshioka, K., Watanabe, S, Shirai, K., Kikuchi, H, Yokota, Y, Honda, C, Arakawa, M, Wada, K, Mori, O, Nakazawa, S, Yumoto, K, Kikuchi, S, Miura, A, Yamaguchi, T., Watanabe, Sei-Ichiro, Pilorget, C, Abe, M., Fujii, Y, Riu, L, Honda, R, Hosoda, S., Tachibana, S, Tatsumi, Eri, Yokota, Y., Shimaki, Y., Barnouin, Olivier, S., Tsuda, Y, Takahashi, T, Ono, G., Tsukizaki, R., Takeuchi, H., Mimasu, Y, Honda, C., Michikami, T., Yoshikawa, Makoto, Barnouin, OS, Moroi, K., Shimaki, Y, Yano, Hajime, Ozaki, M, Hirata, N, Ishihara, Y, Sugimoto, C, Noguchi, R., Suzuki, H, Ozaki, M., Kikuchi, H., Kobayashi, H., Tsumura, K., Kameda, S, Namiki, N, Komatsu, G., Michel, Patrick, Sasaki, Sho, Kanamaru, Masanori, Tachibana, Shogo, Senshu, H., Riu, L., Terui, F., Shimada, T, Honda, R., Iwata, T, Domingue, D., Matsumoto, K, Miura, A., Yoshikawa, K, Yumoto, K., Yoshikawa, M, Hosoda, S, Shirai, K, Sawada, H., Nakazawa, S., Tsukizaki, R, Yamamoto, Y, Takahashi, T., Iijima, Y, Morota, T., Yabuta, H., Hirabayashi, M, Saiki, T., Miyamoto, H, Shimada, T., Kato, H, Kanamaru, M, Nakauchi, Y., Soldini, S., Wada, Koji, Matsuoka, Moe, Miyamoto, Hideaki, Barnouin, Olivier,, Yamada, M, Ogawa, N, Yoshikawa, Kent, Cho, Y, Ogawa, K, Ohtake, M, Ishida, M., Ishida, M, Arakawa, Masahiko, Mori, O., Hiroi, T, Takaki, N, Kameda, Shingo, Hemmi, R., Michel, P, Ogawa, N., Ishihara, Y., Abe, M, Kikuchi, S., Nakauchi, Y, Kouyama, T., Namiki, N., Senshu, H, Hayakawa, M, Ernst, Carolyn, Takei, Y, Sakatani, N., Kobayashi, H, Mizuno, T, Michikami, T, Tanabe, N, Ikeda, H., Tatsumi, E, Irie, T.   +185 more
core   +1 more source

Raman analysis of organic refractory materials after energetic processing: Evidence for amorphous carbon on TNOs and comets

Meteoritics &Planetary Science, EarlyView.
Abstract Amorphous carbon (αC) is found in various extraterrestrial particles, including those thought to originate from the outer Solar System. αC can form through two main processes involving C‐rich materials: exposure to energetic charged particles and thermal processing.
M. Germanà, A. Vyjidak, G. A. Baratta, B. M. Giuliano, R. G. Urso, C. Scirè, D. Fulvio, T. Grassi, P. Jusko, P. Caselli, M. E. Palumbo   +10 more
wiley   +1 more source

An evaluation method of reflectance spectra to be obtained by Hayabusa2 Near-Infrared Spectrometer (NIRS3) based on laboratory measurements of carbonaceous chondrites

Earth, Planets and Space, 2017
We conducted ground-based performance evaluation tests of the Near-Infrared Spectrometer (NIRS3) onboard Hayabusa2 spacecraft in November 2013 and from April to May 2014 and established a method for evaluating its measured reflectance spectra ...
Moe Matsuoka, Tomoki Nakamura, Takahito Osawa, Takahiro Iwata, Kohei Kitazato, Masanao Abe, Yusuke Nakauchi, Takehiko Arai, Mutsumi Komatsu, Takahiro Hiroi, Naoya Imae, Akira Yamaguchi, Hideyasu Kojima   +12 more
doaj   +1 more source

Evidence for the Presence of Thin and Heterogenous Dust Deposits on Ryugu's Boulders From Hayabusa2 MARA and Sample Data

Geophysical Research Letters, 2023
Middle infrared spectral results obtained in‐situ by the Hayabusa2 MARA instrument are generally in‐line with previous results and a new comparison with sample C0137 returned from asteroid (162173) Ryugu, being similar to an aqueously altered CI1 ...
M. Hamm, V. E. Hamilton, C. A. Goodrich
doaj   +1 more source

Microstructural evidence for multiple generations of sulfide precipitation and impact‐induced thermal alteration under acidic conditions on Asteroid Ryugu

Meteoritics &Planetary Science, EarlyView.
Abstract Here we report on the microstructure and chemistry of sulfide minerals returned from asteroid (162173) Ryugu. We identify a unique sulfide population in particle A0016 composed of violarite (FeNi2S4), pyrite (FeS2), chalcopyrite (CuFeS2), pyrrhotite (Fe1‐xS), and pentlandite ([Fe,Ni]9S8).
M. C. Benner, B. S. Prince, D. L. Schrader, T. J. Zega   +3 more
wiley   +1 more source

Overview of Hayabusa2 Extended Mission’s Flyby of Near-Earth Asteroid (98943) Torifune

The Planetary Science Journal
The Hayabusa2 extended mission, nicknamed Hayabusa2# ( # is pronounced SHARP, which stands for the Small Hazardous Asteroid Reconnaissance Probe), is JAXA’s small body explorer to conduct science and engineering investigations in space.
Masatoshi Hirabayashi, Masahiko Hayakawa, Yuya Mimasu, Naru Hirata, Takuya Iwaki, Shunichi Kamata, Kohei Kitazato, Toru Kouyama, Naoya Sakatani, Hajime Yano, Koki Yumoto, Masahiro Fujiwara, Sumito Shimomura, Takanao Saiki, Hiroshi Takeuchi, Eri Tatsumi, Yuichi Tsuda, Yasuhiro Yokota, Makoto Yoshikawa, Satoshi Tanaka, Hayabusa2 Extended Mission Torifune Flyby Working Group   +20 more
doaj   +1 more source