Japan Geoscience Union Meeting 2014

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International Session (Poster)

Symbol B (Biogeosciences) » B-AO Astrobiology & the Origin of Life

[B-AO01_28PO1] Astrobiology: Origins, Evolution, Distribution of Life

Mon. Apr 28, 2014 6:15 PM - 7:30 PM Poster (3F)

Convener:*Kobayashi Kensei(Department of Chemistry and Biotechnology, Faculty of Engineering, Yokohama National University), Akihiko Yamagishi(Tokyo University of Pharmacy and Life Science, Department of Molecular Biology), Masatoshi Ohishi Masatoshi(Astronomy Data Center, National Astronomical Observatory of Japan), Eiichi Tajika(Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo), Takeshi Kakegawa(Graduate School of Science, Tohoku University), Shigeru Ida(Department of Earth and Planetary Science, Graduate School of Science and Technology, Tokyo Institute of Technology)

6:15 PM - 7:30 PM

[BAO01-P03] Possibility of production of amino acids by impact reaction using a light-gas gun as a simulation of asteroid impacts

*Kazuki OKOCHI1, Tetsu MIENO2, Kazuhiko KONDO1, Sunao HASEGAWA3, Kosuke KUROSAWA4 (1.Dept.Physics, Shizuoka Univ., 2.Grad.School of Sci. and Technol, Shizuoka Univ., 3.ISAS/JAXA, 4.Planetary Exploration Research Center, Chiba Institute of Technology)

Keywords:impact reaction, gas gun, Titan, asteroid, amino acid, HPLC

We are interested in the production process of amino acids in space. Especially, asteroids coming to Titan satellite have made impact reaction on the surface including nitrogen gas, water ice and methane. On the Titan surface, various material, produced by the impact reactions, have been stored under low temperature and dark condition. To do the simulation experiment, a JAXA 2-stage light-gas gun has been used. A projectile with 6.5km/s of speed hits a water + iron target in 1 atm of nitrogen gas, causing an impact reaction. Figure 1 shows a crater on the target. Figure 2 shows produced black soot which deposited onto the aluminum sheet. The samples produced are carefully collected and analyzed by HPLC, FTIR, TOF-MS. As a result of HPLC, peaks suggesting the existence of glycine and alanine in the samples produced were confirmed.