2017 Fiscal Year Final Research Report
Chronology of high-temperature dust formation processes in the solar protoplanetary dust
| Project/Area Number |
16K17837
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geochemistry/Cosmochemistry
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| Research Institution | Hokkaido University (2017)
Japan Aerospace EXploration Agency (2016) |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 隕石 / 難揮発性包有物 / Al-Mg年代 / 初期太陽系円盤 |
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| Outline of Final Research Achievements |
This study revealed a time duration of condensation processes of high-temperature dusts formed in the solar protoplanetary disk by high-precision dating of Ca-Al-rich inclusions (CAIs) in meteorites. We measured three high-temperature condensate CAIs and they show a formation age spread of 0.17 ± 0.04 Myr. Our findings demonstrate that both condensation and melting of minerals in a hot nebular gas occurred contemporaneously to form various types of CAIs and continued for at least ~0.2 Myr after the birth of the Solar System.
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| Free Research Field |
宇宙化学
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