Results 71 to 80 of about 4,638 (257)

Ryugu’s observed volatile loss did not arise from impact heating alone

Communications Earth & Environment, 2021
The loss of volatile material from asteroid Ryugu was not caused solely by heating from hypervelocity impacts as previously believed, suggest impact experiments conducted at speeds comparable to those expected in the main asteroid ...
Kosuke Kurosawa, Ryota Moriwaki, Hikaru Yabuta, Ko Ishibashi, Goro Komatsu, Takafumi Matsui   +5 more
doaj   +1 more source

Compositional Diversity Among Primitive Asteroids

, 2018
Spectroscopic observations from the ultraviolet to the mid-infrared have revealed new and diagnostic differences among primitive asteroids. We review the spectral characteristics of these asteroids and their inferred compositional and physical properties.
A'Hearn, Abell, Alí-Lagoa, Alí-Lagoa, Barucci, Barucci, Binzel, Bottke, Bottke, Bottke, Bottke, Bradley, Brunetto, Brunetto, Bunch, Campins, Campins, Campins, Campins, Carvano, Clark, Cloutis, Cloutis, Cloutis, Cloutis, Cohen, de Leuw, de León, de León, de León, Delbo, Dermott, Dotto, Dotto, Draine, Dykhuis, Emery, Feierberg, Feierberg, Ferriere, Fornasier, Fornasier, Gaffey, Gaffey, Gounelle, Hanner, Harker, Hendrix, Hendrix, Hendrix, Henning, Hiroi, Hiroi, Jenniskens, Johnson, Kanuchova, Kelley, Landsman, Landsman, Landsman, Lantz, Lantz, Lantz, Lauretta, Lazzarin, Lebofsky, Licandro, Licandro, Lim, Lisse, Marchi, Marchis, Mazanek, McAdam, McSween, McSween, Morate, Morate, Morlok, Müller, Nesvorný, Nesvorný, Nuth, Olofsson, Oszkiewicz, Papoular, Papoular, Pieters, Pinilla-Alonso, Pinilla-Alonso, Reddy, Rivkin, Rivkin, Rivkin, Rivkin, Rivkin, Rivkin, Roettger, Schnaiter, Stecher, Takahashi, Takir, Takir, Tholen, Tomeoka, Tomeoka, Tsuda, Velbel, Vernazza, Vernazza, Vilas, Vilas, Vilas, Vilas, Vilas, Walsh, Waszczak, Ziffer   +117 more
core   +1 more source

Variations of the surface characteristics of Ryugu returned samples [PDF]

, 2022
Aiko Nakato, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Akiko Miyazaki, Kana Nagashima, Kentaro Hatakeda, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Jean‐Pierre Bibring, C. Pilorget, Vincent Hamm, R. Brunetto, Lucie Riu, Lionel Lourit, D. Loizeau, Tania Le Pivert-Jolivet, Guillaume Lequertier, Aurélie Moussi‐Soffys, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, S. Nakazawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Sei‐ichiro Watanabe, Yuichi Tsuda   +29 more
openalex   +1 more source

Phyllosilicate Infrared Spectral Features as Tracers of Aqueous Alteration in CM Chondrites and Implications for Remote Sensing of Hydrated Asteroids

Journal of Geophysical Research: Planets, Volume 130, Issue 12, December 2025.
Abstract CM (Mighei‐type) carbonaceous chondrites host abundant OH/H2O‐bearing phyllosilicates formed from water‐rock reactions in primitive planetesimals. Their infrared (IR) spectral features resemble those of C‐type asteroids, making laboratory analyses of CMs essential for interpreting asteroid observations.
W. M. Lawrence, B. L. Ehlmann
wiley   +1 more source

Visualization of nanoscale magnetic domain states in the asteroid Ryugu

Scientific Reports, 2023
In the samples collected from the asteroid Ryugu, magnetite displays natural remanent magnetization due to nebular magnetic field, whereas contemporaneously grown iron sulfide does not display stable remanent magnetization.
Yuki Kimura, Takeharu Kato, Toshiaki Tanigaki, Tetsuya Akashi, Hiroto Kasai, Satoshi Anada, Ryuji Yoshida, Kazuo Yamamoto, Tomoki Nakamura, Masahiko Sato, Kana Amano, Mizuha Kikuiri, Tomoyo Morita, Eiichi Kagawa, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tatsuaki Okada, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Hisayoshi Yurimoto, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Sei-ichiro Watanabe, Yuichi Tsuda, Shogo Tachibana   +35 more
doaj   +1 more source

Sulfur‐bearing serpentine in carbonaceous chondrites

Meteoritics &Planetary Science, Volume 60, Issue 12, Page 2864-2890, December 2025.
Abstract A correlative multi‐technique approach, including electron microscopy and X‐ray synchrotron work, has been used to obtain both structural and compositional information of a sulfur‐bearing serpentine identified in several carbonaceous chondrites (Winchcombe CM2, Aguas Zarcas CM2, Ivuna CI, and Orgueil CI), and in Ryugu samples returned by the ...
N. Topping, J. C. Bridges, L. J. Hicks, L. Petera, C. S. Allen, J. Ryu, D. G. Hopkinson, M. Danaie, L. Blase, F. M. Willcocks, G. Douglas, H. G. Changela, T. Noguchi, T. Matsumoto, A. Miyake   +14 more
wiley   +1 more source

Surface process on airless solar system bodies preserved on samples recovered by Hayabusa2 [PDF]

, 2016
第7回極域科学シンポジウム:[OA] 南極隕石/はやぶさ11月30日（水）国立国語研究所 ...

core   +1 more source

Observing the variation of asteroid thermal inertia with heliocentric distance [PDF]

, 2018
Thermal inertia is a useful property to characterise a planetary surface since it can be used as a qualitative measure of the regolith grain size. It is expected to vary with heliocentric distance because of its dependence on temperature.
Alí-Lagoa, B Rozitis, Balridge, Bowell, Bus, Busch, Chesley, Cruikshank, Davidsson, Debye, Decin, Delbo, Delbo, Delbo, E MacLennan, Emery, Fowler, Gueymard, Gundlach, Gundlach, Hahn, Hanus, Hanus, Harris, Harris, Harris, Holsapple, Houck, Housen, Hughes, Hörz, J P Emery, Jarrett, Kaasalainen, Keihm, Keihm, Kieffer, Lauretta, Lebofsky, Lebouteiller, Lellouch, Lim, Lowry, Macke, Magri, Mainzer, Marsset, Mitchell, Murdoch, Müller, Müller, Nugent, Nugent, Nugent, Okada, Opeil, Petit, Pettengill, Rivkin, Robie, Rozitis, Rozitis, Rozitis, Rozitis, Rozitis, Rozitis, Rozitis, S F Green, Scheeres, Scheeres, Shepard, Snyder, Tedesco, Tedesco, Tedesco, Usui, Vasavada, Veeder, Vokrouhlický, Wan, Werner, Werner, Williams, Wolters, Wolters, Wright   +85 more
core   +1 more source

Enantioselective three-dimensional high-performance liquid chromatographic determination of amino acids in the Hayabusa2 returned samples from the asteroid Ryugu

Journal of Chromatography Open
The chirality of amino acids in extraterrestrial materials may provide an insight into the origin of the essential l-enantiopure amino acids in the terrestrial biosphere.
Aogu Furusho, Chiharu Ishii, Takeyuki Akita, Mai Oyaide, Masashi Mita, Hiroshi Naraoka, Yoshinori Takano, Jason P. Dworkin, Yasuhiro Oba, Toshiki Koga, Kazuhiko Fukushima, Dan Aoki, Minako Hashiguchi, Hajime Mita, Yoshito Chikaraishi, Naohiko Ohkouchi, Nanako O. Ogawa, Saburo Sakai, Daniel P. Glavin, Jamie E. Elsila, Eric T. Parker, José C. Aponte, Hannah L. McLain, Francois-Regis Orthous-Daunay, Véronique Vuitton, Roland Thissen, Cédric Wolters, Philippe Schmitt-Kopplin, Alexander Ruf, Junko Isa, Norbert Hertkorn, John M. Eiler, Toshihiro Yoshimura, Haruna Sugahara, Heather V. Graham, Yoshihiro Furukawa, Daisuke Araoka, Satoru Tanaka, Takaaki Yoshikawa, Fumie Kabashima, Kazunori Sasaki, Hajime Sato, Tomoya Yamazaki, Morihiko Onose, Mayu Morita, Yuki Kimura, Kuniyuki Kano, Junken Aoki, Kosuke Fujishima, Shin-ichiro Nomura, Shogo Tachibana, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hisayoshi Yurimoto, Kanako Sakamoto, Toru Yada, Masahiro Nishimura, Aiko Nakato, Akiko Miyazaki, Kasumi Yogata, Masanao Abe, Tomohiro Usui, Makoto Yoshikawa, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Satoru Nakazawa, Tatsuaki Okada, Sei-ichiro Watanabe, Yuichi Tsuda, Kenji Hamase   +72 more
doaj   +1 more source

Constraining surface properties of asteroid (162173) Ryugu from numerical simulations of Hayabusa2 mission impact experiment

Nature Communications, 2022
Hayabusa2 mission impact experiment on asteroid Ryugu formed a crater larger than expected. Here, the authors show numerical impact simulations and find that the target cohesion may be very low, indicating the Hayabusa2 impact experiment probably ...
Martin Jutzi, Sabina D. Raducan, Yun Zhang, Patrick Michel, Masahiko Arakawa   +4 more
doaj   +1 more source