*Hiroshi Naraoka¹, Yoshinori Takano², Jason P. Dworkin³, SOM Analysis Team (1.Department of Earth and Planetary Sciences, Research Center for Planetary Trace Organic Compounds, Kyushu University, 2.Japan Agency for Marine-Earth Science and Technology, 3.Astrochemistry Laboratory NASA Goddard Space Flight Center, Greenbelt, MD 20771 USA)

*Haruna Sugahara^1,2, Yoshinori Takano¹, Yuzuru Karouji³, Kazuya Kumagai⁴, Toru Yada³, Naohiko Ohkouchi¹, Masanao Abe³, Hayabusa2 project team (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2. Institut de Chimie de Nice, Universite Cote dAzur, 3.Japan Aerospace Exploration Agency (JAXA), 4.Marine Works Japan Ltd.)

*Hiroshi Naraoka¹, Yoshinori Takano², Jason P. Dworkin³, SOM Analysis Team (1.Department of Earth and Planetary Sciences, Research Center for Planetary Trace Organic Compounds, Kyushu University, 2.Japan Agency for Marine-Earth Science and Technology, 3.Astrochemistry Laboratory NASA Goddard Space Flight Center, Greenbelt, MD 20771 USA)

*Haruna Sugahara^1,2, Yoshinori Takano¹, Yuzuru Karouji³, Kazuya Kumagai⁴, Toru Yada³, Naohiko Ohkouchi¹, Masanao Abe³, Hayabusa2 project team (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2. Institut de Chimie de Nice, Universite Cote dAzur, 3.Japan Aerospace Exploration Agency (JAXA), 4.Marine Works Japan Ltd.)

*Yoko Kebukawa¹, Michael Zolensky², Cyrena Anne Goodrich³, Motoo Ito⁴, Nanako O. Ogawa⁵, Yoshinori Takano⁵, Naohiko Ohkouchi⁵, Hiroki Suga⁹, Matthew Marcus⁶, David Kilcoyne⁶, Takuji Ohigashi⁷, Zia Rahman², Muawia H. Shaddad⁸, Kensei Kobayashi¹ (1.Yokohama National University, 2.NASA Johnson Space Center, 3.Lunar and Planetary Institute, 4.Kochi Institute for Core Sample Research JAMSTEC, 5.Japan Agency for Marine-Earth Science and Technology, 6.Lawrence Berkeley National Laboratory, 7.Institute for Molecular Science, 8.University of Khartoum, 9.The University of Tokyo)

*Adam David Sproson¹, Yusuke Yokoyama^1,2, Yoshinori Takano², Yosuke Miyairi¹, Takahiro AZE¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.Department of Biogeochemistry, Japan Agency for Marine Science and Technology)

*Yuta Isaji¹, Yoshinori Takano¹, Nanako O. Ogawa¹, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology)

*Yoshinori Takano¹ (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

*Atsushi Urai^1,2, Yoshinori Takano², Naohiko Ohkouchi² (1.Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 2.Department of Biogeochemistry, Japan Agency for Marine-Earth Science and Technology)

*Makoto Matsushita¹, Yoshinori Takano¹, Hiroyuki Imachi¹, Atsushi Urai², Ho-Dong Park³, Hiroki Iwata³, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 3.Department of Environmental Sciences, Faculty of Science, Shinshu University)

*Yoshinori Takano¹ (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))

*Atsushi Urai^1,2, Yoshinori Takano², Naohiko Ohkouchi² (1.Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 2.Department of Biogeochemistry, Japan Agency for Marine-Earth Science and Technology)

*Makoto Matsushita¹, Yoshinori Takano¹, Hiroyuki Imachi¹, Atsushi Urai², Ho-Dong Park³, Hiroki Iwata³, Naohiko Ohkouchi¹ (1.Japan Agency for Marine-Earth Science and Technology, 2.Department of Science and Technology, Graduate School of Medicine, Science and Technology, Shinshu University, 3.Department of Environmental Sciences, Faculty of Science, Shinshu University)

*Yoshinori Takano¹ (1.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))