Sodium carbonates on Ryugu as evidence of highly saline water in the outer Solar SystemOPEN ACCESS
Toru Matsumoto, Takaaki Noguchi, Akira Miyake, Yohei Igami, Megumi Matsumoto, Toru Yada, Masayuki Uesugi, Masahiro Yasutake, Kentaro Uesugi, Akihisa Takeuchi, Hayato Yuzawa, Takuji Ohigashi & Tohru Araki Nature Astronomy, Published: 18 November 2024 LINK (OPEN…
Reconciling remote-sensing estimates of Ryugu’s albedo with laboratory measurementsOPEN ACCESS
Christian Potiszil, Tsutomu Ota & Eizo Nakamura Nature Astronomy, Published: 26 September 2024 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The Japanese Hayabusa2 spacecraft returned samples from the asteroid Ryugu in December 2020, and several results on…
Phosphorus-rich grains in Ryugu samples with major biochemical potential
C. Pilorget, D. Baklouti, J.-P. Bibring, R. Brunetto, M. Ito, I. Franchi, N. Tomioka, M. Uesugi, A. Yamaguchi, R. Greenwood, T. Okada, T. Usui, T. Yada, K. Hatakeda, K. Yogata, D. Loizeau, T. Le Pivert-Jolivet,…
Evidence from 162173 Ryugu for the influence of freeze–thaw on the hydration of asteroidsOPEN ACCESS
Matthew J. Genge, Natasha V. Almeida, Matthias van Ginneken, Lewis Pinault, Penelope J. Wozniakiewicz & Hajime Yano Nature Astronomy, Published: 26 September 2024 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Hydrated asteroids are likely to be main…
Variations of organic functional chemistry in carbonaceous matter from the asteroid 162173 RyuguOPEN ACCESS
Bradley De Gregorio, George D. Cody, Rhonda M. Stroud, A. L. David Kilcoyne, Scott Sandford, Corentin Le Guillou, Larry R. Nittler, Jens Barosch, Hikaru Yabuta, Zita Martins, Yoko Kebukawa, Taiga Okumura, Minako Hashiguchi, Shohei Yamashita,…
Shock melt in the Cold Bokkeveld CM2 carbonaceous chondrite and the response of C-complex asteroids to hypervelocity impactsOPEN ACCESS
Martin R. Lee, Luke Daly, Jennika Greer, Sammy Griffin, Cameron J. Floyd, Levi Tegg, Julie Cairney MAPS, Version of Record online: 30 August 2024 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Many of the CM carbonaceous chondrites…
n-Alkanes formed by methyl-methylene addition as a source of meteoritic aliphaticsOPEN ACCESS
P. Merino, L. Martínez, G. Santoro, J. I. Martínez, K. Lauwaet, M. Accolla, N. Ruiz del Arbol, C. Sánchez-Sánchez, A. Martín-Jimenez, R. Otero, M. Piantek, D. Serrate, R. Lebrón-Aguilar, J. E. Quintanilla-López, J. Mendez, P….
Tarda and Tagish Lake: Samples from the same outer Solar System asteroid and implications for D- and P-type asteroids
Devin L. Schrader, Edward A. Cloutis, Daniel M. Applin, Jemma Davidson, Zachary A. Torrano, Dionysis Foustoukos, Conel M. O’D. Alexander, Kenneth J. Domanik, Moe Matsuoka, Tomoki Nakamura, Thomas J. Zega, Gregory A. Brennecka, Jan Render…
Comparison of optical spectra between asteroids Ryugu and Bennu: II. High-precision analysis for space weathering trendsOPEN ACCESS
K. Yumoto, E. Tatsumi, T. Kouyama, D.R. Golish, Y. Cho, T. Morota, S. Kameda, H. Sato, B. Rizk, D.N. DellaGiustina, Y. Yokota, H. Suzuki, J. de León, H. Campins, J. Licandro, M. Popescu, J.L. Rizos,…
Recurrent planetesimal formation in an outer part of the early solar systemOPEN ACCESS
Wladimir Neumann, Ning Ma, Audrey Bouvier & Mario Trieloff Scientific Reports, Volume 14, article number 14017, Published: 01 July 2024 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The formation of planets in our solar system encompassed various…
A primordial noble gas component discovered in the Ryugu asteroid and its implicationsOPEN ACCESS
Alexander B. Verchovsky, Feargus A. J. Abernethy, Mahesh Anand, Ian A. Franchi, Monica M. Grady, Richard C. Greenwood, Simeon J. Barber, Martin Suttle, Motoo Ito, Naotaka Tomioka, Masayuki Uesugi, Akira Yamaguchi, Makoto Kimura, Naoya Imae,…
Detection and quantification of organosulfur species in the Tagish Lake Meteorite by highly sensitive LC-MSOPEN ACCESS
N. Randazzo, R. W. Hilts, M. C. Holt, C. D. K. Herd, B. Reiz, R. M. Whittal MAPS, Version of Record online: 28 May 2024 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “We analyzed the methanol extracts…
Comparison of optical spectra between asteroids Ryugu and Bennu: I. Cross calibration between Hayabusa2/ONC-T and OSIRIS-REx/MapCam
K. Yumoto, E. Tatsumi, T. Kouyama, D.R. Golish, Y. Cho, T. Morota, S. Kameda, H. Sato, B. Rizk, D.N. DellaGiustina, Y. Yokota, H. Suzuki, J. de León, H. Campins, J. Licandro, M. Popescu, J.L. Rizos,…
Laser Irradiation of Carbonaceous Chondrite Simulants: Space Weathering Implications for C-complex AsteroidsOPEN ACCESS
Andy J. López-Oquendo, Mark J. Loeffler, David E. Trilling Submitted to PSJ PDF (OPEN ACCESS) Update (21 May 2024): The Planetary Science Journal, Volume 5, Number 5LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Surfaces of carbonaceous asteroids…
Microscale Hydrogen, Carbon, and Nitrogen Isotopic Diversity of Organic Matter in Asteroid RyuguOPEN ACCESS
Larry R Nittler, Jens Barosch, Katherine Burgess, Rhonda M Stroud, Jianhua Wang, Hikaru Yabuta, Yuma Enokido, Megumi Matsumoto, Tomoki Nakamura, Yoko Kebukawa, Shohei Yamashita, Yoshio Takahashi, Laure Bejach, Lydie Bonal, George D Cody, Emmanuel Dartois,…
Coevolution of phyllosilicate, carbon, sulfide, and apatite in Ryugu’s parent bodyOPEN ACCESS
Zack Gainsforth, Gerardo Dominguez, Kana Amano, Megumi Matsumoto, Yuri Fujioka, Eiichi Kagawa, Tomoki Nakamura, Shogo Tachibana, Tomoyo Morita, Mizuha Kikuiri, Hisayoshi Yurimoto, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Toru Yada, Masahiro…
Unraveling the Cr Isotopes of Ryugu: An Accurate Aqueous Alteration Age and the Least Thermally Processed Solar System MaterialOPEN ACCESS
Ryoji Tanaka, Dilan M. Ratnayake, Tsutomu Ota, Noah Miklusicak, Tak Kunihiro, Christian Potiszil, Chie Sakaguchi, Katsura Kobayashi, Hiroshi Kitagawa, Masahiro Yamanaka, Masanao Abe, Akiko Miyazaki, Aiko Nakato, Satoru Nakazawa, Masahiro Nishimura, Tatsuaki Okada, Takanao Saiki,…
Disequilibrium oxygen isotope distribution among aqueously altered minerals in Ryugu asteroid returned samplesOPEN ACCESS
Noriko T. Kita, Kouki Kitajima, Kazuhide Nagashima, Noriyuki Kawasaki, Naoya Sakamoto, Wataru Fujiya, Yoshinari Abe, Jérôme Aléon, Conel M. O’D. Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier, Richard W. Carlson, Marc…
Three-dimensional textures of Ryugu samples and their implications for the evolution of aqueous alteration in the Ryugu parent body
Akira Tsuchiyama, Megumi Matsumoto, Junya Matsuno, Masahiro Yasutake, Tomoki Nakamura, Takaaki Noguchi, Akira Miyake, Kentaro Uesugi, Akihisa Takeuchi, Shota Okumura, Yuri Fujioka, Mingqi Sun, Aki Takigawa, Toru Matsumoto, Satomi Enju, Itaru Mitsukawa, Yuma Enokido, Tatsuhiko…
Aqueous alteration in icy planetesimals: The effect of outward transport of gaseous hydrogenOPEN ACCESS
Takazo Shibuya, Yasuhito Sekine, Sakiko Kikuchi, Hiroyuki Kurokawa, Keisuke Fukushi, Tomoki Nakamura, Sei-ichiro Watanabe Geochimica et Cosmochimica ActaAvailable online 28 March 2024 LINK (OPEN ACCESS) “Parent bodies of carbonaceous chondrites that initially contained metallic iron…
Space-weathering induced changes in hydrated silicates: A multi-scale study combining visible/infrared spectroscopy and electron microscopy
Stefano Rubino, Hugues Leroux, Cateline Lantz, Alice Aléon-Toppani, Donia Baklouti, Zahia Djouadi, Obadias Mivumbi, David Troadec, Ferenc Borondics, Rosario Brunetto IcarusAvailable online 28 March 2024, 116070 LINK “Investigating the effects of space-weathering on primitive bodies…
Characterization of the micrometer scale surface roughness of meteoritic samples
R.M. Marshal, M. Patzek, O. Rüsch Icarus, In Press, Journal Pre-proof, Available online 1 February 2024 LINK “This study investigates the key role of boulders, particularly their surface texture, which are primary surface features on…
Quantification of bulk elemental composition for C-type asteroid Ryugu samples with nondestructive elemental analysis using muon beam
Kazuhiko Ninomiya, Takahito Osawa, Kentaro Terada, Taiga Wada, Shunsaku Nagasawa, I-Haun Chiu, Tomoki Nakamura, Tadayuki Takahashi, Yasuhiro Miyake, M. Kenya Kubo, Soshi Takeshita, Akihiro Taniguchi, Izumi Umegaki, Shin Watanabe, Toshiyuki Azuma, Miho Katsuragawa, Takahiro Minami,…
Clumped isotope and Δ17O measurements of carbonates in CM carbonaceous chondrites: new insights into parent body thermal and fluid evolutionOPEN ACCESS
Matthieu Clog, Paula Lindgren, Sevasti Modestou, Alex McDonald, Andrew Tait, Terry Donnelly, Darren Mark, Martin Lee Geochimica et Cosmochimica ActaIn Press, Journal Pre-proof, Available online 28 January 2024 LINK (OPEN ACCESS) “The CM carbonaceous chondrites…
Hydrogen in magnetite from asteroid RyuguOPEN ACCESS
J. Aléon, S. Mostefaoui, H. Bureau, D. Vangu, H. Khodja, K. Nagashima, N. Kawasaki, Y. Abe, C. M. O’D. Alexander, S. Amari, Y. Amelin, K. Bajo, M. Bizzarro, A. Bouvier, R. W. Carlson, M. Chaussidon,…
Electron microscopy observations of the diversity of Ryugu organic matter and its relationship to minerals at the micro- to nano-scaleOPEN ACCESS
Rhonda M. Stroud, Jens Barosch, Lydie Bonal, Katherine Burgess, George D. Cody, Bradley T. De Gregorio, Luke Daly, Emmanuel Dartois, Elena Dobrică, Jean Duprat, Cecile Engrand, Dennis Harries, Minako Hashiguchi, Hope Ishii, Yoko Kebukawa, A….
Microstructural and chemical features of impact melts on Ryugu particle surfaces: Records of interplanetary dust hit on asteroid RyuguOPEN ACCESS
Megumi Matsumoto, Junya Matsuno, Akira Tsuchiyama, Tomoki Nakamura, Yuma Enokido, Mizuha Kikuiri, Aiko Nakato, Masahiro Yasutake, Kentaro Uesugi, Akihisa Takeuchi, […] Yuichi Tsuda Science Advances19 Jan 2024Vol 10, Issue 3 LINK (OPEN ACCESS)PDF (OPEN ACCESS)…
Hayabusa 2 returned samples reveal a weak to null magnetic field during aqueous alteration of Ryugu’s parent bodyOPEN ACCESS
C. Maurel, J. Gattacceca, M. Uehara Earth and Planetary Science LettersVolume 627, 1 February 2024, 118559 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Highlights Ryugu samples of 1 and 22 mg do not exhibit any stable remanent…
In situ investigation of an organic micro-globule and its mineralogical context within a Ryugu “sand” grainOPEN ACCESS
Van T. H. Phan, Pierre Beck, Rolando Rebois, Eric Quirico, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P….
Four-dimensional-STEM analysis of the phyllosilicate-rich matrix of Ryugu samplesOPEN ACCESS
Bahae-eddine Mouloud, Damien Jacob, Francisco de la Peña, Maya Marinova, Corentin Le Guillou, Jean-Christophe Viennet, Sylvain Laforet, Hugues Leroux, Adrien Teurtrie, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata,…
Polycyclic aromatic hydrocarbons in samples of Ryugu formed in the interstellar medium
Sarah S. Zeichner, José C. Aponte, Surjyendu Bhattacharjee, Guannan Dong, Amy E. Hofmann, Jason P. Dworkin, Daniel P. Glavin, Jamie E. Elsila, Heather V. Graham, Hiroshi Naraoka, Yoshinori Takano, Shogo Tachibana, Allison T. Karp, Kliti…
Isotopic trichotomy of main belt asteroids from implantation of outer solar system planetesimals
David Nesvorný, Nicolas Dauphas, David Vokrouhlický, Rogerio Deienno, Timo Hopp Earth and Planetary Science LettersVolume 626, 15 January 2024, 118521 LINK “Recent analyses of samples from asteroid (162173) Ryugu returned by JAXA’s Hayabusa2 mission suggest…
Neodymium-142 deficits and samarium neutron stratigraphy of C-type asteroid (162173) Ryugu
Zachary A. Torrano, Michelle K. Jordan, Timothy D. Mock, Richard W. Carlson, Ikshu Gautam, Makiko K. Haba, Tetsuya Yokoyama, Yoshinari Abe, Jérôme Aléon, Conel Alexander, Sachiko Amari, Yuri Amelin, Ken-ichi Bajo, Martin Bizzarro, Audrey Bouvier,…
Asteroids were born bigger: An implication of surface mass ablation during gas-assisted implantation into the asteroid belt
Rafael Ribeiro de Sousa, Andre Izidoro, Rogerio Deienno, Rajdeep Dasgupta IcarusAvailable online 6 December 2023, 115910 LINK “The origins of carbonaceous asteroids in the asteroid belt is not fully understood. The leading hypothesis is that…
Influx of nitrogen-rich material from the outer Solar System indicated by iron nitride in Ryugu samplesOPEN ACCESS
Toru Matsumoto, Takaaki Noguchi, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hikaru Saito, Satoshi Hata, Dennis Harries, Aki Takigawa, Yusuke Nakauchi, Shogo Tachibana, Tomoki Nakamura, Megumi Matsumoto, Hope A. Ishii,…
Pervasive aqueous alteration in the early Solar System revealed by potassium isotopic variations in Ryugu samples and carbonaceous chondrites
Yan Hu, Frédéric Moynier, Wei Dai, Marine Paquet, Tetsuya Yokoyama, 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…
Phyllosilicates with embedded Fe-based nanophases in Ryugu and Orgueil
Hugues Leroux, Corentin Le Guillou, Maya Marinova, Sylvain Laforet, Jean-Christophe Viennet, Bahae-Eddine Mouloud, Adrien Teurtrie, Francisco de la Peña, Damien Jacob, Daniel Hallatt, Mario Pelaez Fernandez, David Troadec, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei…
A newly revised estimation of bulk densities and examination of the shape of individual Ryugu grainsOPEN ACCESS
Toru Yada, Kasumi Yogata, Kentaro Hatakeda, Aiko Nakato, Masahiro Nishimura, Kana Nagashima, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Rui Tahara, Rei Kanemaru, Arisa Nakano, Miwa Yoshitake, Ayako Iwamae, Shizuho Furuya, Akira Tsuchiyama, Shogo Tachibana, Tatsuhiro…
Soluble organic matter Molecular atlas of Ryugu reveals cold hydrothermalism on C-type asteroid parent bodyOPEN ACCESS
Philippe Schmitt-Kopplin, Norbert Hertkorn, Mourad Harir, Franco Moritz, Marianna Lucio, Lydie Bonal, Eric Quirico, Yoshinori Takano, Jason P. Dworkin, Hiroshi Naraoka, Shogo Tachibana, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta, Hisayoshi Yurimoto, Kanako Sakamoto,…
Space weathering record and pristine state of Ryugu samples from MicrOmega spectral analysis
T. Le Pivert-Jolivet, R. Brunetto, C. Pilorget, J.-P. Bibring, A. Nakato, V. Hamm, K. Hatakeda, C. Lantz, D. Loizeau, L. Riu, K. Yogata, D. Baklouti, F. Poulet, A. Aléon-Toppani, J. Carter, Y. Langevin, T. Okada,…
The thermal history of Ryugu based on Raman characterization of Hayabusa2 samples
Lydie Bonal, Eric Quirico, Gilles Montagnac, Mutsumi Komatsu, Yoko Kebukawa, Hikaru Yabuta, Kana Amano, Jens Barosch, Laure Bejach, George D. Cody, Emmanuel Dartois, Alexandre Dazzi, Bradley De Gregorio, Ariane Deniset-Besseau, Jean Duprat, Cécile Engrand, Minako…
Grain Size Effects on UV–MIR (0.2–14μm) Spectra of Carbonaceous Chondrite GroupsOPEN ACCESS
David C. Cantillo, Vishnu Reddy, Adam Battle, Benjamin N. L. Sharkey, Neil C. Pearson, Tanner Campbell, Akash Satpathy, Mario De Florio, Roberto Furfaro and Juan Sanchez The Planetary Science Journal, Volume 4, Number 9 LINK…
Visualization of nanoscale magnetic domain states in the asteroid RyuguOPEN ACCESS
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…
Gaia view of primitive inner-belt asteroid families: Searching for the origins of asteroids Bennu and RyuguOPEN ACCESS
Marco Delbo, Chrysa Avdellidou, Kevin J. Walsh Accepted for publication in Astronomy and Astrophysics PDF (OPEN ACCESS) “Near-Earth asteroids Ryugu and Bennu, were visited, characterised, and sampled by the Hayabusa2 and OSIRIS-REx missions: remote sensing…
The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent PlanetesimalOPEN ACCESS
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. Carlson6, Marc Chaussidon,…
The parent bodies of CR chondrites and their secondary historyOPEN ACCESS
Trygve Prestgard, Pierre Beck, Lydie Bonal, Jolantha Eschrig, Jérôme Gattacceca, Corinne Sonzogni, Lisa Krämer Ruggiu MAPSVersion of Record online: 31 July 2023 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Renazzo-type (CR) chondrites are a relatively rare group…
Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid RyuguOPEN ACCESS
Ann. N. Nguyen, Prajkta Mane, Lindsay P. Keller, Laurette Piani, 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…
Ryugu asteroid sample return provides a natural laboratory for primordial chemical evolutionOPEN ACCESS
Yasuhiro Oba, Yoshinori Takano, Jason P. Dworkin & Hiroshi Naraoka Nature Communications, Volume 14, Article number: 3107Comment, published: 30 May 2023 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The samples returned from near-Earth asteroid (162173) Ryugu provide…
Overview of the search for signs of space weathering on the low-albedo asteroid (101955) BennuOPEN ACCESS
B.E. Clark, A. Sen, X.-D. Zou, D.N. DellaGiustina, S. Sugita, N. Sakatani, M. Thompson, D. Trang, E. Tatsumi, M.A. Barucci, M. Barker, H. Campins, T. Morota, C. Lantz, A.R. Hendrix, F. Vilas, L. Keller, V.E….
Variations of the surface characteristics of Ryugu returned samplesOPEN ACCESS
Aiko Nakato, Toru Yada, Masahiro Nishimura, Kasumi Yogata, Akiko Miyazaki, Kana Nagashima, Kentaro Hatakeda, Kazuya Kumagai, Yuya Hitomi, Hiromichi Soejima, Jean-Pierre Bibring, Cedric Pilorget, Vincent Hamm, Rosario Brunetto, Lucie Riu, Lionel Lourit, Damien Loizeau, Tania…
Uracil in the carbonaceous asteroid (162173) RyuguOPEN ACCESS
Yasuhiro Oba, Toshiki Koga, Yoshinori Takano, Nanako O. Ogawa, Naohiko Ohkouchi, Kazunori Sasaki, Hajime Sato, Daniel P. Glavin, Jason P. Dworkin, Hiroshi Naraoka, Shogo Tachibana, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, Ryuji Okazaki, Hikaru Yabuta,…
Insight into multi-step geological evolution of C-type asteroids from Ryugu particles
Akira Yamaguchi, Naotaka Tomioka, Motoo Ito, Naoki Shirai, Makoto Kimura, Richard C. Greenwood, Ming-Chang Liu, Kaitlyn A. McCain, Nozomi Matsuda, Masayuki Uesugi, Naoya Imae, Takuji Ohigashi, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata, Hayato Yuzawa, Yu…
High mobility of asteroid particles revealed by measured cohesive force of meteorite fragmentsOPEN ACCESS
Yuuya Nagaashi and Akiko M. Nakamura Science Advances17 Mar 2023Vol 9, Issue 11 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The cohesive force of asteroid particles is a crucial parameter in microgravity. The cohesive force was evaluated…
Interaction between clay minerals and organics in asteroid RyuguOPEN ACCESS
J.-C. Viennet, M. Roskosz, T. Nakamura, P. Beck, B. Baptiste, B. Lavina, E.E. Alp, M.Y. Hu, J. Zhao, M. Gounelle, R. Brunetto, H. Yurimoto, T. Noguchi, R. Okazaki, H. Yabuta, H. Naraoka, K. Sakamoto, S….
Nonequilibrium Spherulitic Magnetite In The Ryugu Samples
Elena Dobrică, Hope A. Ishii, John P. Bradley, Kenta Ohtaki, Adrian J. Brearley, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hugues Leroux,…
The noble gas and nitrogen relationship between Ryugu and carbonaceous chondritesOPEN ACCESS
M.W. Broadley, D.J. Byrne, E. Füri, L. Zimmermann, B. Marty, R. Okazaki, T. Yada, F. Kitajima, S. Tachibana, K. Yogata, K. Sakamoto, H. Yurimoto, T. Nakamura, T. Noguchi, H. Naraoka, H. Yabuta, S. Watanabe, Y….
Early fluid activity on Ryugu inferred by isotopic analyses of carbonates and magnetite
Kaitlyn A. McCain, Nozomi Matsuda, Ming-Chang Liu, Kevin D. McKeegan, Akira Yamaguchi, Makoto Kimura, Naotaka Tomioka, Motoo Ito, Naoya Imae, Masayuki Uesugi, Naoki Shirai, Takuji Ohigashi, Richard C. Greenwood, Kentaro Uesugi, Aiko Nakato, Kasumi Yogata,…
Constraints on Solar System early evolution by MicrOmega analysis of Ryugu carbonates
D. Loizeau, C. Pilorget, L. Riu, R. Brunetto, J.-P. Bibring, A. Nakato, A. Aléon-Toppani, K. Hatakeda, K. Yogata, J. Carter, T. Le Pivert-Jolivet, T. Yada, T. Okada, T. Usui, Y. Langevin, C. Lantz, D. Baklouti,…
Methods and tools for handling, transportation, weighing, and pelletization applied to the initial analysis of volatile components in the Hayabusa2 samplesOPEN ACCESS
Ryuji Okazaki, Shinji Yamanouchi, Kazuhiko Shimada, Atsushi Baba, Fumio Kitajima & Toru Yada Earth, Planets and Space, Volume 74, Article number: 190Published: 27 December 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The Hayabusa2 spacecraft succeeded in sampling and returning…
A dehydrated space-weathered skin cloaking the hydrated interior of RyuguOPEN ACCESS
Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrică, Hugues Leroux, Corentin Le…
Oxygen isotope evidence from Ryugu samples for early water delivery to Earth by CI chondritesOPEN ACCESS
Richard C. Greenwood, Ian A. Franchi, Ross Findlay, James A. Malley, Motoo Ito, Akira Yamaguchi, Makoto Kimura, Naotaka Tomioka, Masayuki Uesugi, Naoya Imae, Naoki Shirai, Takuji Ohigashi, Ming-Chang Liu, Kaitlyn A. McCain, Nozomi Matsuda, Kevin…
Oxygen Ablation during Atmospheric Entry: Its Influence on the Isotopic Composition of MicrometeoritesOPEN ACCESS
N. G. Rudraswami, M. Pandey, D. Fernandes, J. D. Carrillo-Sánchez, W. Feng, J. M. C. Plane, and V. P. Singh The Astrophysical Journal, Volume 940, Number 1Published 16 November 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS)…
Trace-element analysis of mineral grains in Ryugu rock fragment sections by synchrotron-based confocal X-ray fluorescenceOPEN ACCESS
Benjamin Bazi, Pieter Tack, Miles Lindner, Bart Vekemans, Ella De Pauw, Beverley Tkalcec, Frank E. Brenker, Jan Garrevoet, Gerald Falkenberg, Hikaru Yabuta, Hisayoshi Yurimoto, Tomoki Nakamura, Kana Amano, Megumi Matsumoto, Yuri Fujioka, Yuma Enokido, Daisuke…
Derivation of 1.064 μm normal albedos on the C-type asteroid Ryugu from laser pulse intensity measurement of the Hayabusa2 LIDAROPEN ACCESS
Ryuhei Yamada, Keiko Yamamoto, Shoko Oshigami, Hiroshi Araki, Hiroki Senshu, Hirotomo Noda, Noriyuki Namiki, Koji Matsumoto, Fumi Yoshida, Shinsuke Abe, Naru Hirata, Sho Sasaki & Takahide Mizuno Earth, Planets and Space volume 74, Article number:…
Acquisition and Preservation of Remanent Magnetization in Carbonaceous Asteroids
Samuel W. Courville, Joseph G. O’Rourke, Julie C. Castillo-Rogez, Roger R. Fu, Rona Oran, Benjamin P. Weiss & Linda T. Elkins-Tanton Nature AstronomyPublished: 13 October 2022 LINK “The solar nebula sustained a strong magnetic field…
Water-rich C-type asteroids as early solar system carbonate factories
Victoria Froh, Maitrayee Bose, Martin D. Suttle, Jacopo Nava, Luigi Folco, Lynda B. Williams, Julie Castillo-Rogez IcarusIn Press, Journal Pre-proof, Available online 12 October 2022 LINK “Highlights • We investigated a large, fine-grained micrometeorite TAM19B-7…
Characterization of the MASCOT landing area by Hayabusa2OPEN ACCESS
Stefan Schröder, Naoya Sakatani, Rie Honda, Eri Tatsumi, Yasuhiro Yokota, Deborah Domingue, Yuichiro Cho, Shingo Kameda, Kohei Kitazato, Toru Kouyama, Moe Matsuoka, Akira Miura, Tomokatsu Morota, Tatsuaki Okada, Hirotaka Sawada, Hiroki Senshu, Yuri Shimaki, Seiji…
Incipient Space Weathering on 162173 Ryugu Recorded by Crystallographic Changes of Pyrrhotite
Harries D. * Langenhorst F. Matsumoto T. Noguchi T. Yurimoto H. Nakamura T. Yabuta H. Naraoka H. Okazaki R. Sakamoto K. Tachibana S. Watanabe S. Tsuda Y. MetSoc 2022 abstract [#6073] LINK “Pyrrhotite recovered from…
Dehydration Decomposition of Phyllosilicates in the C-Type Asteroid Ryugu Material by Space Weathering
Noguchi T. * Matsumoto T. Miyake A. Igami Y. Haruta M. Saito H. Hata S. Seto Y. Miyahara M. Tomioka N. Ishii H. A. Bradley J. P. Ohtaki K. Dobricǎ E. Leroux H. LeGuillou C….
Deciphering the Parent Bodies of Heated CMs
Prestgard T. J. Beck P. Bonal L. MetSoc22 abstract [#6187] LINK “Some Stage-II and III heated CM chondrites, and Elephant Moraine (EET) 83355, have spectra similar to C, Cg and/or X-type asteroids. A subset of…
“The ice-organic-silicate contents of small solar system bodies: indicators for a comet to asteroid evolutionary pathway”OPEN ACCESS
Havishk Tripathi, Christian Potiszil, Ryoji Tanaka, Eizo Nakamura Monthly Notices of the Royal Astronomical Society, stac1068Published: 20 April 2022 LINK (OPEN ACCESS) “Comets and asteroids have traditionally been separated categories, but main belt comets skew…
Connecting Asteroids and Meteorites with visible and near-infrared spectroscopyOPEN ACCESS
Francesca E. DeMeo, Brian J. Burt, Michaël Marsset, David Polishook, Thomas H. Burbine, Benoît Carry, Richard P. Binzel, Pierre Vernazza, Vishnu Reddy, Michelle Tang, Cristina A. Thomas, Andrew S. Rivkin, Nicholas A. Moskovitz, Stephen M….
Soluble Organic Compounds in Asteroid 162173 Ryugu
Naraoka H. * Takano Y. Dworkin J. P. Hayabusa2-Initial-Analysis SOM Team Hayabusa2-Initial-Analysis Core PDF LPSC 2022 abstract [#1781] “We report soluble organic compounds in the slovent-extract samples in the Ryugu grains collected by the Hayabusa2…
Macromolecular Organic Matter in C-Type Asteroid Ryugu
Yabuta H. * Cody G. D. Engrand C. Kebukawa Y. De Gregorio B. et al. PDF LPSC 2022 abstract [#2241] “The initial analysis results on macromolecular organic matter from the asteroid Ryugu samples are presented…
The Asteroid 162173 Ryugu: a Cometary OriginOPEN ACCESS
Hitoshi Miura, Eizo Nakamura and Tak Kunihiro The Astrophysical Journal Letters, Volume 925, Number 2 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “The Japanese Hayabusa2 mission has revealed in detail the physical characteristics of the C-type asteroid…
Polyaromatic Units Set the Albedo of Dark Extraterrestrial MaterialsOPEN ACCESS
Romain Maupin, Zahia Djouadi, Rosario Brunetto, Obadias Mivumbi, Christophe Sandt and Ferenc Borondics The Planetary Science Journal, Volume 3, Number 1, 20 January 2022 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Primitive extraterrestrial materials are generally dark,…
A case for a Themis asteroid family spacecraft mission
M.E. Landis, J.C. Castillo-Rogez, P.O. Hayne, H. Hsieh, K.H.G. Hughson, D. Kubitschek, K.E. Miller, T.H. Prettyman, A.S. Rivkin, B.E. Schmidt, J.E.C.Scully, N. Yamashita, M.N. Villarreal, M. Alexander, A. Armstrong, C. Bader, C. Brown, J.T. Engbrecht,…
Preliminary analysis of the Hayabusa2 samples returned from C-type asteroid RyuguOPEN ACCESS
Toru Yada, Masanao Abe, Tatsuaki Okada, Aiko Nakato, Kasumi Yogata, Akiko Miyazaki, Kentaro Hatakeda, Kazuya Kumagai, Masahiro Nishimura, Yuya Hitomi, Hiromichi Soejima, Miwa Yoshitake, Ayako Iwamae, Shizuho Furuya, Masayuki Uesugi, Yuzuru Karouji, Tomohiro Usui, Tasuku…
First compositional analysis of Ryugu samples by the MicrOmega hyperspectral microscopeOPEN ACCESS
C. Pilorget, T. Okada, V. Hamm, R. Brunetto, T. Yada, D. Loizeau, L. Riu, T. Usui, A. Moussi-Soffys, K. Hatakeda, A. Nakato, K. Yogata, M. Abe, A. Aléon-Toppani, J. Carter, M. Chaigneau, B. Crane, B….
MicrOmega/MASCOT first results
Jean-Pierre Bibring, Cédric Pilorget, Lucie Riu, Vincent Hamm, Rosario Brunetto, Tra-Mi Ho, Ralph Jaumann, Yves Langevin, Aurélie Moussi, François Poulet, Mathieu Vincendon, the MicrOmega/Mascot team Planetary and Space ScienceAvailable online 4 December 2021 LINK “Highlights…
Polarimetric Properties of the Near–Sun Asteroid (155140) 2005 UD in Comparison with Other Asteroids and Meteoritic SamplesOPEN ACCESS
Masateru Ishiguro, Yoonsoo P. Bach, Jooyeon Geem, Hiroyuki Naito, Daisuke Kuroda, Myungshin Im, Myung Gyoon Lee, Jinguk Seo, Sunho Jin, Yuna G. Kwon, Tatsuharu Oono, Seiko Takagi, Mitsuteru Sato, Kiyoshi Kuramoto, Takashi Ito, Sunao Hasegawa,…
Fine-regolith production on asteroids controlled by rock porosity
S. Cambioni, M. Delbo, G. Poggiali, C. Avdellidou, A. J. Ryan, J. D. P. Deshapriya, E. Asphaug, R.-L. Ballouz, M. A. Barucci, C. A. Bennett, W. F. Bottke, J. R. Brucato, K. N. Burke, E….
Internal rubble properties of asteroid (101955) BennuOPEN ACCESS
P. Tricarico, D. J. Scheeres, A. S. French, J. W. McMahon, D. N. Brack, J. M. Leonard, P. Antreasian, S. R. Chesley, D. Farnocchia, Y. Takahashi, E. M. Mazarico, D. Rowlands, D. Highsmith, K. Getzandanner,…
Ryugu’s observed volatile loss did not arise from impact heating aloneOPEN ACCESS
Kosuke Kurosawa, Ryota Moriwaki, Hikaru Yabuta, Ko Ishibashi, Goro Komatsu & Takafumi Matsui Communications Earth & Environment, Volume 2, Article number: 146 (2021) LINK (OPEN ACCESS)PDF (OPEN ACCESS) “Carbonaceous asteroids, including Ryugu and Bennu, which…
The Macroporosity of Rubble Pile Asteroid Ryugu and Implications for the Origin of ChondrulesOPEN ACCESS
William Herbst, James P. Greenwood and Teng Ee Yap The Planetary Science Journal, Volume 2, Number 3 LINK (OPEN ACCESS)PDF (OPEN ACCESS) “We use the known surface boulder-size distribution of the C-type rubble pile asteroid…
Rotational states and shapes of Ryugu and Bennu: Implications for interior structure and strength
J.H. Roberts, O.S. Barnouin, M.G. Daly, K.J. Walsh, M.C. Nolan, R.T. Daly, P. Michel, Y. Zhang, M.E. Perry, G.A. Neumann, J.A. Seabrook, R.W. Gaskell, E.E. Palmer, J.R. Weirich, S. Watanabe, N. Hirata, Na. Hirata, S….
The Tarda Meteorite: A Window into the Formation of D-type AsteroidsOPEN ACCESS
Yves Marrocchi, Guillaume Avice, and Jean-Alix Barrat The Astrophysical Journal Letters, Volume 913, Number 1Published: 19 May 2021 PDF (OPEN ACCESS) LINK “Dynamic models of solar system evolution suggest that D-type asteroids formed beyond Saturn’s…
High-resolution observations of bright boulders on asteroid Ryugu: 1. Size frequency distribution and morphologyOPEN ACCESS
Chiho Sugimoto, Eri Tatsumi, Yuichiro Cho, Tomokatsu Morota, Rie Honda, Shingo Kameda, Yosuhiro, Yokota, Koki Yumoto, Minami Aoki, Daniella N. DellaGiustina, Tatsuhiro Michikami, Takahiro Hiroi, Deborah L. Domingue, Patrick Michel, Stefan E.Schröder, Tomoki Nakamura, Manabu…
Origins of colors variability among C-cluster main-belt asteroidsOPEN ACCESS
Pierre Beck, Olivier Poch IcarusAvailable online: 21 April 2021 LINK Update (6 May 2021): PDF (OPEN ACCESS) “Highlights • A C-type cluster is identified by an SDSS colors & albedo cluster analysis.• The C-cluster matches…
The Macroporosity of Rubble Pile Asteroid Ryugu and Implications for the Origin of ChondrulesOPEN ACCESS
William Herbst, James P. Greenwood, Teng Ee Yap Accepted for publication in the Planetary Science Journal PDF (OPEN ACCESS) “We use the known surface boulder-size distribution of the C-type rubble pile asteroid Ryugu (NEA 162173)…
Magnetization of Large C-Type Asteroids: A Detectable Consequence of Pebble Accretion?
S. W. Courville, O’Rourke J. G., Castillo-Rogez J. C., Oran R., Weiss B. P. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #2355 PDF “The theory of pebble accretion implies that large planetesimals…
Handling and Description of C-Type Asteroid Ryugu Samples Returned by Hayabusa2
T. Yada, Abe M., Nakato A., Yogata K., Miyazaki A. et al. 52nd Lunar and Planetary Science Conference (2021), Abstract #2008 PDF “Hayabusa2 returned samples from C-type asteroid Ryugu last December. >5 grams of black…
The aqueous alteration of CM chondrites, a review
M.D. Suttle, A.J. King, P.F. Schofield, H.Bates, S.S. Russell Geochimica et Cosmochimica ActaAvailable online 2 February 2021 LINK “The CM chondrites are samples of primitive water-rich asteroids formed during the early solar system. They record…
Improved method of hydrous mineral detection by latitudinal distribution of 0.7-μm surface reflectance absorption on the asteroid Ryugu
Shingo Kameda, Yasuhiro Yokota, Toru Kouyama, Eri Tatsumi, Marika Ishida, Tomokatsu Morota, Rie Honda, Naoya Sakatani, Manabu Yamada, Moe Matsuoka, Hidehiko Suzuki, Yuichiro Choe, Masahiko Hayakawa, Chikatoshi Honda, Hirotaka Sawada, Kazuo Yoshioka, Kazunori Ogawa, Seiji…
Space Weathering within C-Complex Main Belt Asteroid FamiliesOPEN ACCESS
Cristina A. Thomas, David E. Trilling, Andrew S. Rivkin, Tyler Linder to be published in the Astronomical Journal PDF (OPEN ACCESS) “Using data from the Sloan Digital Sky Survey Moving Object Catalog, we study color…
Nature of bright C-complex asteroidsOPEN ACCESS
Sunao Hasegawa, Toshihiro Kasuga, Fumihiko Usui, Daisuke Kuroda accepted for publication in PASJ PDF (OPEN ACCESS) “Most C-complex asteroids have albedo values less than 0.1, but there are some high-albedo (bright) C-complex asteroids with albedo…
Assessment of Cr isotopic heterogeneities of volatile-rich asteroids based on multiple planet formation modelsOPEN ACCESS
Ryota Fukai, Sota Arakawa accepted for publication in The Astrophysical Journal (Volume 908, Number 1) PDF (OPEN ACCESS) Update (15 February 2021): LINK “Describing the comprehensive evolutionary scenario for asteroids is key to explaining the…
Spectral characterization of the craters of Ryugu as observed by the NIRS3 instrument on-board Hayabusa2
L. Riu, C. Pilorget, R. Milliken, K. Kitazato, T. Nakamura, Y. Cho, M. Matsuoka, S. Sugita, M. Abe, S. Matsuura, M. Ohtake, S. Kameda, N. Sakatani, E. Tatsumi, Y. Yokota, T. Iwata IcarusIn Press, Journal…
Oxygen-isotope systematics of chondrules and olivine fragments from Tagish Lake C2 chondrite: Implications of chondrule-forming regions in protoplanetary diskOPEN ACCESS
Takayuki Ushikubo, Makoto Kimura Geochimica et Cosmochimica ActaIn Press, Journal Pre-proof, Available online 12 November 2020 LINK (OPEN ACCESS) “Highlights: • Oxygen isotopic systematics of chondrules and olivine fragments of Tagish Lake meteorite were studied.•…
Bennu’s near-Earth lifetime of 1.75 million years inferred from craters on its boulders
R.-L. Ballouz, K. J. Walsh, O. S. Barnouin, D. N. DellaGiustina, M. Al Asad, E. R. Jawin, M. G. Daly, W. F. Bottke, P. Michel, C. Avdellidou, M. Delbo, R. T. Daly, E. Asphaug, C….
Microporosity and parent body of the rubble-pile NEA (162173) RyuguOPEN ACCESS
Wladimir Neumann, Matthias Grott, Mario Trieloff, Ralf Jaumann, Jens Biele, Maximilian Hamm, Ekkehard Kührt IcarusIn press, journal pre-proof, Available online 24 October 2020 LINK PDF (OPEN ACCESS) “Highlights • We investigate the porosity for ice-rich…
Motion of Dust Ejected from the Surface of Asteroid (101955) BennuOPEN ACCESS
Yu Jiang, Jürgen Schmidt Heliyon (2020) PDF (OPEN ACCESS) “From Jan. 6, 2019 to Feb. 18, 2019, OSIRIS-REx observed asteroid (101955) Bennu ejecting 11 plumes of dust, of which part is escaping and another part…
Widespread carbon-bearing materials on near-Earth asteroid (101955) Bennu
Amy A. Simon, Hannah H. Kaplan, Victoria E. Hamilton, Dante S. Lauretta, Humberto Campins, Joshua P. Emery, M. Antonietta Barucci, Daniella N. DellaGiustina, Dennis C. Reuter, Scott A. Sandford, Dathon R. Golish, Lucy F. Lim,…
Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history
H. H. Kaplan, D. S. Lauretta, A. A. Simon, V. E. Hamilton, D. N. DellaGiustina, D. R. Golish, D. C. Reuter, C. A. Bennett, K. N. Burke, H. Campins, H. C. Connolly Jr., J. P….
Variations in color and reflectance on the surface of asteroid (101955) Bennu
D. N. DellaGiustina, K. N. Burke, K. J. Walsh, P. H. Smith, D. R. Golish, E. B. Bierhaus, R.-L. Ballouz, T. L. Becker, H. Campins, E. Tatsumi, K. Yumoto, S. Sugita, J. D. Prasanna Deshapriya,…
Heterogeneous mass distribution of the rubble-pile asteroid (101955) BennuOPEN ACCESS
D. J. Scheeres, A. S. French, P. Tricarico, S. R. Chesley, Y. Takahashi, D. Farnocchia, J. W. McMahon, D. N. Brack, A. B. Davis, R.-L. Ballouz, E. R. Jawin, B. Rozitis, J. P. Emery, A….
Asteroid (101955) Bennu’s weak boulders and thermally anomalous equatorOPEN ACCESS
B. Rozitis, A. J. Ryan, J. P. Emery, P. R. Christensen, V. E. Hamilton, A. A. Simon, D. C. Reuter, M. Al Asad, R.-L. Ballouz, J. L. Bandfield, O. S. Barnouin, C. A. Bennett, M….
Modeling optical roughness and first-order scattering processes from OSIRIS-REx color images of the rough surface of asteroid (101955) BennuOPEN ACCESS
Pedro H. Hasselmann, Sonia Fornasier, Maria A. Barucci, Alice Praet, Beth E. Clark, Jian-Yang Li, Dathon R. Golish, Daniella N. Della Giustina, Jasinghege Don P. Deshapriya, Xian-Duan Zou, Mike G. Daly, Olivier S. Barnouin, Amy…
The formation of H2O and Si-OH by H2+ irradiation in major minerals of carbonaceous chondrites
Yusuke Nakauchi, Masanao Abe, Makiko Ohtake, Toru Matsumoto, Akira Tsuchiyama, Kohei Kitazato, Keisuke Yasuda, Kohtaku Suzuki, Yoshinori Nakata IcarusIn Press, Journal Pre-proof, Available online 3 October 2020 LINK “Highlights • We report the spectral modification…
“Water” abundance at the surface of C-complex main-belt asteroidsOPEN ACCESS
Pierre Beck, Jolantha Eschrig, Sandra Potin, Trygve Prestgard, Lydie Bonal, Eric Quirico, Bernard Schmitt IcarusIn Press, Journal Pre-proof, Available online 1 October 2020 LINK PDF (OPEN ACCESS) “Highlights • Quantification of equivalent water in CC…
Global-scale albedo and spectro-photometric properties of Ryugu from NIRS3/Hayabusa2, implications for the composition of Ryugu and the representativity of the returned samples
C. Pilorget, J. Fernando, L. Riu, K. Kitazato, T. Iwata IcarusIn Press, Journal Pre-proof, Available online 29 September 2020 LINK “Highlights • We use a Bayesian approach to derive the photometric parameters from NIRS3 data.•…
Impact Experiment on Asteroid (162173) Ryugu: Structure beneath the Impact Point Revealed by In Situ Observations of the Ejecta Curtain
Toshihiko Kadono, Masahiko Arakawa, Rie Honda, Ko Ishibashi, Kazunori Ogawa, Naoya Sakatani, Hirotaka Sawada, Yuri Shimaki, Kei Shirai, Seiji Sugita, and Koji Wada The Astrophysical Journal Letters, Volume 899, Number 1 LINK “An impact experiment…
Spectral reflectance analysis of type 3 carbonaceous chondrites and search for their asteroidal parent bodies
J. Eschrig, L. Bonal, P. Beck, T.J. Prestgard IcarusIn Press, Journal Pre-proof, Available online 7 August 2020 LINK “Non-differentiated asteroids are among the most primitive objects in our Solar System, having escaped intense heating mechanisms….
The Albedo of Ryugu: Evidence for a High Organic Abundance, as Inferred from the Hayabusa2 Touchdown ManeuverOPEN ACCESS
Christian Potiszil, Ryoji Tanaka, Katsura Kobayashi, Tak Kunihiro, Eizo Nakamura Astrobiology, Vol. 20, No. 7Hypothesis ArticlePublished Online:8 Jul 2020 LINK (OPEN ACCESS) “The Hayabusa2 mission successfully collected samples from the asteroid Ryugu last year and…
Concepts of the Small Body Sample Return Missions – the 1st 10 Million Year Evolution of the Solar System
Yangting Lin, Yonghe Zhang, Sen Hu, Yuchen Xu, Weijia Zhou, Shijie Li, Wei Yang, Yang Gao, Mingtao Li, Qingzhu Yin, Douglas Lin & Wing Ip Space Science Reviews, Volume 216, Article number: 45 (2020)Published: 20…
Highly porous nature of a primitive asteroid revealed by thermal imaging
Tatsuaki Okada, Tetsuya Fukuhara, Satoshi Tanaka, Makoto Taguchi, Takehiko Arai, Hiroki Senshu, Naoya Sakatani, Yuri Shimaki, Hirohide Demura, Yoshiko Ogawa, Kentaro Suko, Tomohiko Sekiguchi, Toru Kouyama, Jun Takita, Tsuneo Matsunaga, Takeshi Imamura, Takehiko Wada, Sunao…
Data‐driven taxonomy matching of asteroid and meteorite
Yuki Saito, Peng K. Hong, Takafumi Niihara, Hideaki Miyamoto, Kenji Fukumizu Meteoritics & Planetary Science First Published: 19 January 2020 LINK “The matching of asteroids and meteorites is a significant step toward a better understanding…
Space weathering induced formation of hydrogen sulfide (H2S) and hydrogen disulfide (H2S2) in the Murchison meteorite
Cheng Zhu, Sándor Góbi, Matthew J. Abplanalp, Robert Frigge, Jeffrey J. Gillis‐Davis, Ralf I. Kaiser JGR Planets First published: 21 October 2019 LINK “Theoretical calculations and experimental simulations indicate that the surprisingly low sulfur abundance…
Images from the surface of asteroid Ryugu show rocks similar to carbonaceous chondrite meteorites
R. Jaumann, N. Schmitz, T.-M. Ho, S. E. Schröder, K. A. Otto, K. Stephan, S. Elgner, K. Krohn, F. Preusker, F. Scholten, J. Biele, S. Ulamec, C. Krause, S. Sugita, K.-D. Matz, T. Roatsch, R….
Low thermal conductivity boulder with high porosity identified on C-type asteroid (162173) Ryugu
M. Grott, J. Knollenberg, M. Hamm, K. Ogawa, R. Jaumann, K. A. Otto, M. Delbo, P. Michel, J. Biele, W. Neumann, M. Knapmeyer, E. Kührt, H. Senshu, T. Okada, J. Helbert, A. Maturilli, N. Müller,…
Fates of hydrous materials during planetesimal collisionsOPEN ACCESS
Shigeru Wakita, Hidenori Genda PDF (OPEN ACCESS) Update (Icarus, 20 March 2019) LINK “Hydrous minerals are found on the surfaces of asteroids, but their origin is not clear. If their origin is endogenic, the hydrous…
The alteration history of the Jbilet Winselwan CM carbonaceous chondrite: An analog for C‐type asteroid sample returnOPEN ACCESS
A. J. King, S. S. Russell, P. F. Schofield, E. R. Humphreys‐Williams, S. Strekopytov, F. A. J. Abernethy, A. B. Verchovsky, M. M. Grady Meteorit Planet Sci. doi:10.1111/maps.13224 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “Jbilet…
Intense aqueous alteration on C-type asteroids: Perspectives from giant fine-grained micrometeorites [GCA-D-18-00805]
M.D.Suttle, L.Folco, M.J.Genge, S.S.Russell, J.Najorka, M. van Ginneken Geochimica et Cosmochimica Acta LINK “This study explores the petrology of five giant (>400μm) hydrated fine-grained micrometeorites from the Transantarctic Mountain (TAM) micrometeorite collection. For the first…
Spectral reflectance “deconstruction” of the Murchison CM2 carbonaceous chondrite and implications for spectroscopic investigations of dark asteroids
Edward A. Cloutis, Valerie B. Pietrasz, Cain Kiddell, Matthew R.M. Izawa, Pierre Vernazza, Thomas H. Burbine, Francesca DeMeo, Kimberly T. Tait, James F. Bell III, Paul Mann, Daniel M. Applin, Vishnu Reddy Icarus, Volume 305,…
Ground-based Characterization of Hayabusa2 Mission Target Asteroid 162173 Ryugu: Constraining Mineralogical Composition in Preparation for Spacecraft OperationsOPEN ACCESS
Lucille Le Corre, Juan A. Sanchez, Vishnu Reddy, Driss Takir, Edward A. Cloutis, Audrey Thirouin, Kris J. Becker, Jian-Yang Li, Seiji Sugita, Eri Tatsumi PDF (OPEN ACCESS) “Asteroids that are targets of spacecraft missions are…
Origin and abundance of water in carbonaceous asteroids
Yves Marrocchi, David V. Bekaert, Laurette Piani Earth and Planetary Science Letters, Volume 482, 15 January 2018, Pages 23-32 LINK Highlights • Bulk, matrix and fayalite grains of CV chondrites define a continuous trend. •…
Space Weathering Trends on Carbonaceous Asteroids: A possible explanation for Bennu’s blue slope?
C. Lantz, R.P. Binzel, F.E. DeMeo Icarus In Press, Available online 8 November 2017 LINK “Highlights • Analysis of Near-Earth Asteroid spectra compared to irradiated carbonaceous chondrites. • Link between Principal Composant Analysis scores and…
Giant convecting mud balls of the early solar systemOPEN ACCESS
Philip A. Bland, Bryan J. Travis Science Advances 14 Jul 2017: Vol. 3, no. 7, e1602514 DOI: 10.1126/sciadv.1602514 LINK (OPEN ACCESS) PDF (OPEN ACCESS) “Carbonaceous asteroids may have been the precursors to the terrestrial planets,…
Olivine Extracted from the Jbilet Winselwan CM2 Chondrite — A Reference for the Regolith of C-Group Asteroids?
Harries D. * Wild P. 80th Annual Meeting of the Meteoritical Society 2017 [#6198] abstract (PDF) “We have investigated olivine grains of an unbrecciated specimen of Jbilet Winselwan (CM2) for surface morphology and particle tracks….
Solar-Radiation Heating as a Possible Heat Source for Dehydration of Hydrous Carbonaceous Chondrites
Nakamura T. * Golabek G. Ohtsuka K. Matsuoka M. abstract (PDF) 80th Annual Meeting of the Meteoritical Society 2017 [#6233] “We have calculated time-dependent temperature profiles of near surface layers of primitive Near Sun Asteroid…
The Thermal History of CI and CM Chondrites and Their Relationship to Primitive Asteroid Surfaces
King A. J. * Maturilli A. Schofield P. F. Helbert J. Russell S. S. abstract (PDF) 80th Annual Meeting of the Meteoritical Society 2017 [#6220] “Heated CI and CM chondrites are likely to be excellcent…
New candidates for active asteroids: main-belt (145) Adeona, (704) Interamnia, (779) Nina, (1474) Beira, and near-Earth (162173) RyuguOPEN ACCESS
Vladimir V. Busarev, Andrei B. Makalkin, Faith Vilas, Sergey I. Barabanov, Marina P. Scherbina submitted to Icarus 2017 PDF (OPEN ACCESS) “For the first time, spectral signs of subtle coma activity were observed for four…
