Investigating the impacts of aqueous alteration on organic matter evolution on icy planetesimals driven by cosmo-electrochemistry

• Project/Area Number: 25K00023
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 17010:Space and planetary sciences-related
• Research Institution: Institute of Science Tokyo
• Principal Investigator: Li Yamei 東京科学大学, 未来社会創成研究院, 特任准教授 (10745128)
• Project Period (FY): 2025-04-01 – 2030-03-31
• Project Status: Granted (Fiscal Year 2025)
• Budget Amount: ¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000); Fiscal Year 2029: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2028: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2027: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2026: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000); Fiscal Year 2025: ¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
• Keywords: Ice planetesimal / Carbonaceous chondrites / Organic matter / Chemical evolution / Aqueous alteration

Outline of Research at the Start

I will experimentally investigate the mechanism underlying the organic matter evolution on the icy planetesimals during aqueous alteration. First, I will investigate the transformation of soluble and insoluble organic matter (IOM) catalyzed by the primary and secondary minerals. Moreover, I will explore the reaction mechanisms that lead to the encapsulation of organic matter within secondary minerals.