Takuji Ohigashi^1,2, *Masayuki Uesugi³, Hayato Yuzawa², Motoo Ito⁴, Naotaka Tomioka⁴, Yoshinori Takano⁴, Aiko Nakato^5,7, Akira Yamaguchi⁵, Naoya Imae⁵, Makoto Kimura⁵, Naoki Shirai⁶ (1.High Energy Accelerator Research Organization, 2.Institute for Molecular Science, 3.Japan synchrotron radiation research institute, 4.Japan Agency for Marine-Earth Science and Technology, 5.National Institute of Polar Research, 6.kanagawa University, 7. Japan Aerospace Exploration Agency)

*Toshihiro Yoshimura¹, Yoshinori Takano¹, Hiroshi Naraoka², Toshiki Koga¹, Daisuke Araoka³, Nanako O. Ogawa¹, Philippe Schmitt-Kopplin^4,5, Norbert Hertkorn⁴, Yasuhiro Oba⁶, Jason P. Dworkin⁷, José C. Aponte⁷, Takaaki Yoshikawa⁸, Satoru Tanaka⁹, Naohiko Ohkouchi¹, Minako Hashiguchi¹⁰, Hannah McLain⁷, Eric T. Parker⁷, Saburo Sakai¹, Mihoko Yamaguchi¹¹, Takahiro Suzuki¹¹, Tetsuya Yokoyama¹², Hisayoshi Yurimoto⁶, Tomoki Nakamura¹³, Takaaki Noguchi¹⁴, Ryuji Okazaki², Hikaru Yabuta¹⁵, Kanako Sakamoto¹⁶, Toru Yada¹⁶, Masahiro Nishimura¹⁶, Aiko Nakato¹⁶, Akiko Miyazaki¹⁶, Kasumi Yogata¹⁶, Masanao Abe¹⁶, Tatsuaki Okada¹⁶, Tomohiro Usui¹⁶, Makoto Yoshikawa¹⁶, Takanao Saiki¹⁶, Satoshi Tanaka¹⁶, Fuyuto Terui¹⁷, Satoru Nakazawa¹⁶, Sei-ichiro Watanabe¹⁶, Yuichi Tsuda¹⁶, Shogo Tachibana^18,16, Hayabusa2-initial-analysis SOM team (1.Japan Agency for Marine-Earth Science and Technology, 2.Kyushu University, 3.National Institute of Advanced Industrial Science and Technology, 4.Helmholtz Zentrum München, 5.Technische Universität München, 6.Hokkaido University, 7.NASA Goddard Space Flight Center, 8.HORIBA Advanced Techno, 9.HORIBA Techno Service Co., 10.Nagoya University, 11.Thermo Fisher Scientific Inc., 12.Tokyo Institute of Technology, 13.Tohoku University, 14.Kyoto University, 15.Hiroshima University, 16.Japan Aerospace Exploration Agency, 17.Kanagawa Institute of Technology, 18.University of Tokyo)

*Yasuhiro Oba¹, Toshiki Koga², Yoshinori Takano², Hiroshi Naraoka³, Angel Mojjaro^4,5, Jason P. Dworkin⁴, Daniel P. Glavin⁴, Harold C. Connolly Jr^6,7,8, Dante S. Lauretta⁷ (1.Institute of Low Temperature Science, Hokkaido University, 2.Biogeochemistry Research Center, JAMSTEC, 3.Department of Earth and Planetary Sciences, Kyushu University, 4.Goddard Space Flight Center, NASA, 5.Oak Ridge Associated Universities, 6.Rowan University, 7.Lunar and Planetary Laboratory, University of Arizona, 8.American Museum of Natural History)

*Atsushi URAI^1,2, Yoshinori Takano², Naoto F. Ishikawa², Nanako O. Ogawa², Hiroaki Tatsuno¹, Satoe Kasahara¹, Yuichi Miyabara¹, Naohiko Ohkouchi² (1.Shinshu University, 2.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

*Hiroki Nishimura^1,2, Atsushi URAI^3,1, Yohei Matsui¹, Toshihiro Yoshimura¹, Miyuki Ogawara¹, Hiroyuki Imachi¹, Yosuke Miyairi², Yusuke Yokoyama², Yuichi Miyabara³, Yoshio Takahashi², Yoshinori Takano¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.The University of Tokyo, 3.Shinshu University)

*Nanako O. Ogawa¹, Toshihiro Yoshimura¹, Takeru Kochi^2,1, Junichiro Kuroda^2,1, Yoshinori Takano¹, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Atmosphere and Ocean Research Institute, The University of Tokyo)

*Toshiki Koga¹, Yoshinori Takano¹, Yasuhiro Oba², Nanako O. Ogawa¹, Hiroshi Naraoka³, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Institute of Low Temperature Science, Hokkaido University, 3.Department of Earth and Planetary Sciences, Kyushu University)

*Naohiko Ohkouchi¹, Yunchen Sun^1,2, Nanako O Ogawa¹, Yoshinori Takano¹, Naoto F Ishikawa¹, Yuta Isaji¹, Thomas M Blattmann^1,3, Junichiro Kuroda^1,2, Hodaka Kawahata^2,4 (1.Japan Agency for Marine-Earth Science and Technology, 2.Atmosphere and Ocean Research Institute, University of Tokyo, 3.ETH Zurich, 4.Waseda University)