4:05 PM - 4:20 PM
[PCG21-14] Analysis of Isotopic and Molecular Compositions of Materials from a Jupiter Trojan Asteroid Using High Resolution Mass Spectrometry (HRMS) in the Solar Power Sail OKEANOS Mission
Keywords:Jupiter Trojan asteroids, Mass spectrometry, OKEANOS
We plan to analyze isotopic and elemental compositions of volatile materials from organic matter, hydrated minerals, and ice, in order to understand origin and evolution of the Jupiter Trojan asteroids. It will provide insights into (1) planet formation/migration theories, (2) evolution and distribution of volatiles and organic matter in the Solar System, and (3) evolutional history of the Solar System small bodies beyond the snow line.
The HRMS system is under development aiming to measure H, N, C, O isotopic compositions and elemental compositions of organic compounds. The system also includes various pre-MS procedures; stepwise heating up to 600ºC, gas chromatography (GC), and high-temperature pyrolysis with catalyst to decompose the samples into simple gaseous molecules (e.g., H2, CO, and N2) for isotopic ratio analysis.