JpGU-AGU Joint Meeting 2026

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[J] Oral

P (Space and Planetary Sciences ) » P-PS Planetary Sciences

[P-PS12] Formation and evolution of planetary materials in the Solar System

Thu. May 28, 2026 9:00 AM - 10:30 AM 302 (International Conference Hall, Makuhari Messe)

Chairperson:Hashiguchi Minako(Nagoya University), Matsumoto Toru(The Hakubi Center for Advanced Research, Kyoto University)

In this session, we will discuss the material evolution in the Solar System based on analyses of extraterrestrial materials and experimental studies. We will overview recent knowledge from primitive materials, such as chondrites, interplanetary dust particles, and returned samples by space missions (e.g. Hayabusa 2 mission). Research on meteoritic parent body processes such as aqueous alteration, thermal metamorphism, shock metamorphism, volcanic activity, and core-mantle-crust differentiation will also be discussed. The topics of this session include experimental studies which, together with meteorite studies, help us to understand the material formation/evolution in the Solar System as well as processes on meteorite parent bodies. Presentations on new innovative analytical and theoretical techniques in various research fields (chemistry, theoretical calculation, physical property), and exploratory research by students are highly welcome to improve future studies of the Solar System evolution. This session is J (Japanese) session to promote active discussion on the evolution of solar system materials and to foster our community that includes beginner students. However, presentations in English are also welcome. Presentations on the general formation processes of materials in space are recommended for the "Origin and evolution of materials in space" session, and observational studies on small solar system bodies for the "Small Solar System Bodies: New perspectives on the origin and evolution of the Solar System" session (both E sessions).

9:15 AM - 9:30 AM

[PPS12-02] Organic Functional Group Analysis of Asteroid Bennu Samples by Infrared and N-K-Edge Partial Fluorescence Yield X-Ray Absorption Spectroscopies

*Yoko Kebukawa1, Hikaru Yabuta2, Mutsumi Komatsu3, Minako Hashiguchi4, Toru Matsumoto5, Hiroki Suga6, Hiroshi Naraoka7, Yuma Enokido8, Kanako Sakamoto8, Tomohiro Usui8, Shogo Tachibana9 (1. Institute of Science Tokyo, 2. Hiroshima University, 3. Saitama Prefectural University, 4. Nagoya University, 5. Kyoto University, 6. Japan Synchrotron Radiation Research Institute, 7. Kyushu University, 8. JAXA/ISAS, 9. The University of Tokyo)

9:30 AM - 9:45 AM

[PPS12-03] Raman Spectroscopy of organic matter in Bennu particles.

*Mutsumi Komatsu1, Hikaru Yabuta2, Yoko Kebukawa3, Minako Hashiguchi4, Toru Matsumoto5, Hiroshi Naraoka6, Yuma Enokido7, Kanako Sakamoto7, Tomohiro Usui7, Shogo Tachibana8 (1. Saitama Prefectural University, 2. Hitoshima University, 3. Institute of Science Tokyo, 4. Nagoya University, 5. Kyoto University, 6. Kyushu Univesity, 7. JAXA/ISAS, 8. University of Tokyo)

9:45 AM - 10:00 AM

[PPS12-04] Comparison Study of Macromolecular Organic Matter between Asteroids Bennu and Ryugu: Mainly from the perspectives of C, N, O, and S-XANES

*Hikaru Yabuta1, Yoko Kebukawa2, Minako Hashiguchi3, Mutsumi Komatsu4, Toru Matsumoto5, Shohei Matsumoto6, Tohru Araki8, Yusuke Tamenori9, Hiroki Suga7, Dan Aoki3, Kazuhiko Fukushima3, Hiroshi Naraoka10, Cedric Pilorget11, Damien Loizeau12, Donia Baklouti11, Jean-Pierre Bibring11, Yuma Enokido13, Kanako Sakamoto13, Tomohiro Usui13, Shogo Tachibana14 (1. Hiroshima University, 2. Institute of Science Tokyo, 3. Nagoya University, 4. Saitama Prefectural University, 5. Kyoto University, 6. High Energy Accelerator Research Organization, Photon Factory, 7. Japan Synchrotron Radiation Research Institute, 8. Institute for Molecular Science, UVSOR, 9. Tokyo Metropolitan University, 10. Kyushu University, 11. Université Paris-Saclay, France, 12. Qualisat, France, 13. JAXA/ISAS, 14. University of Tokyo)

10:00 AM - 10:15 AM

[PPS12-05] Halite crystals derived from late-stage brines in an N–H–bearing Bennu grain

*Toru Matsumoto1, Hikaru Yabuta2, Yoko Kebukawa3, Mutsumi Komatsu4, Minako Hashiguchi5, C. Pilorget6, D. Loizeau7, D. Baklouti6, J-P Bibring6, Kanako Sakamoto8, Yuma Enokido8, Tomohiro Usui8, Shogo Tachibana9 (1. The Hakubi Center for Advanced Research, Kyoto University, 2. Hiroshima University, 3. Institute of Science Tokyo, 4. Saitama Prefectural University, 5. Nagoya University, 6. Université Paris-Saclay, 7. Qualisat, 8. ISAS/JAXA, 9. University of Tokyo)

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