2022 Fiscal Year Annual Research Report
Quantum Chemical Determination of the Complex Organic Molecules Formation in the Interstellar Medium
Publicly Offered Research
| Project Area | Next Generation Astrochemistry: Reconstruction of the Science Based on Fundamental Molecular Processes |
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| Project/Area Number |
21H05416
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| Research Institution | Hokkaido University |
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Principal Investigator |
Sameera W.M.C. 北海道大学, 低温科学研究所, 外国人客員研究員 (90791278)
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| Project Period (FY) |
2021-09-10 – 2023-03-31
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| Keywords | quantum chemistry / radical reactions / organic molecules / interstellar medium |
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| Outline of Annual Research Achievements |
The origin of the complex organic molecules (COMs) in the interstellar medium (ISM) is not well established. Radicals formed on interstellar dust grains play a vital role in the formation of COMs. However, behavior radicals and ions on ice dust grains are not fully rationalized. To overcome this limitation, we use quantum chemistry to study the behavior of radicals on interstellar ice.
We have explored the radical reactions on ices; CH3SH + H and CH3OH + OH. Computed reaction paths of the radical reactions on ice explained the experimentally observed products, where quantum tunneling plays a key role in achieving the reactions at low temperatures. Present studies give important mechanistic insights into the COMs formation in the ISM.
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| Research Progress Status |
令和4年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和4年度が最終年度であるため、記入しない。
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