*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)

*Yuta Isaji¹, Toshihiro Yoshimura¹, Daisuke Araoka², Minako Kurisu¹, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.The National Institute of Advanced Industrial Science and Technology)

*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)

*Kaoru Kubota¹, Tsuyoshi Ishikawa¹, Toshihiro Yoshimura¹, Katsunori Kimoto¹, Qing Chang¹, Minoru Ikehara², Yusuke Yokoyama^1,3, Francisco Jimenes-Espejo^4,1, Sidney Hemming⁵, Stephen Barker⁶, Ian Hall⁶ (1.Japan Agency for Marine-Earth Science and Technology, 2.Kochi University, 3.The University of Tokyo, 4.University of Granada, 5.Columbia University, 6.Cardiff University)

*Yurika Ujiie¹, Toshihiro Yoshimura², Yoshiyuki Ishitani³, Koki Miura¹, Dana Ulanova⁴, Hirotoshi Endo⁵ (1.Marine Core Research Institute, Kochi University, 2.Biogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 3.Institute for Extra-cutting-edge Science and Technology Avant-garde Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 4.Faculty of Agriculture and Marine Science, Kochi University, 5.National Institute of Technology, Tsuruoka College)

*Adam David Sproson¹, Toshihiro Yoshimura¹, Shigeyuki Wakaki², Tsuyoshi Ishikawa³, Naohiko Ohkouchi¹ (1.Biogeochemistry Research Center, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan, 2.National Museum of Japanese History, 117 Jonai-cho, Sakura City, Chiba Prefecture 285-8502, Japan, 3.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology 200 Monobe Otsu, Nankoku City, Kochi 783-8502, Japan)