| Project/Area Number |
22K20389
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0204:Astronomy, earth and planetary science, and related fields
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
YANG YAO-LUN 国立研究開発法人理化学研究所, 開拓研究本部, 研究員 (60961688)
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| Project Period (FY) |
2022-08-31 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Interstellar ice / Astrochemistry / Star formation / astronomy / star formation / astrochemistry / astrochemical ice / interstellar ice / low-mass protostars / infrared spectrscopy / Ice / Infrared Astronomy |
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| Outline of Research at the Start |
This research program will unveil formation pathways of complex organic molecules using the data from the JWST by measuring the ice chemical abundance and modeling. The outcome of this program would be the frontier of ice chemistry, which will complement the gas chemistry revealed by ALMA.
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| Outline of Final Research Achievements |
Understanding how do we get here and how does our Solar system form and evolved have been a major pursue of astronomy research. Recent observations in the newly formed stars (protostars) found relatively complex molecules, indicating an extensive chemical evolution already taken place at such an early stage. In this research program, we aim to understand the chemical evolution that leads to the production of these complex molecules. To do so, we use the James Webb Space Telescope to probe the ice compositions in these young protostars, where complex molecules are thought to be formed. Using the data from the CORINOS program, we successfully detect common ice species, including water and CO2, as well as complex species, such as methanol and other complex molecules. In this program, we constructed the ice inventory in IRAS 15398-3359 and present comprehensive studies on the gas-phase molecules to constrain the physical properties of the system where these ices are formed and evolved.
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| Academic Significance and Societal Importance of the Research Achievements |
The chemical evolution during star formation directly relates to the origin of solar system. At the same time, JWST has been revolutionizing our understanding of the universe. This program not only expand the view of our origin but also increase the public interests in astronomy.
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