日本地球惑星科学連合2023年大会

講演情報

[E] オンラインポスター発表

セッション記号 M (領域外・複数領域) » M-IS ジョイント

[M-IS03] アストロバイオロジー

2023年5月23日(火) 10:45 〜 12:15 オンラインポスターZoom会場 (20) (オンラインポスター)

コンビーナ:藤島 皓介(東京工業大学地球生命研究所)、杉田 精司(東京大学大学院理学系研究科地球惑星科学専攻)、深川 美里(国立天文台)、鈴木 庸平(東京大学大学院理学系研究科)

現地ポスター発表開催日時 (2023/5/21 17:15-18:45)

10:45 〜 12:15

[MIS03-P05] 岩石内生命検出の新規分析法の開発

*幸塚 麻里子1鈴木 庸平1 (1.東京大学大学院理学系研究科 地球惑星科学専攻)

One of the most promising planetary bodies where extraterrestrial life is present is Mars. Although drill core samples from igneous rocks will be returned from the Mars2020 target site (Jazzero), life detection methods remain poorly developed for igneous rocks even drilled on Earth. Previously, we succeeded in detecting life by preparing thin sections of resin-embedded drill core samples. However, the resin interference is problematic for characterizing organic molecules originally included in the rock core samples. In this study, we applied a diamond bad saw used to cut and polish Hayabusa 2 samples without resin-embedment to previously characterized rock samples. In addition, we applied submicron-scale mapping of light and heavy elements by a synchrotron-based spectroscopic method for the rock core samples prepared by the diamond bad saw. In our presentation, results of our development will be presented in comparison with those from the resin-based method.