FORMATION PROCESS OF PLANETARY MATERIAL IN THE COLD NEBULA DECIPHERED FROM ISOTOPE IMAGING OF METEORITE ORGANIC MATTER
Project/Area Number |
23654191
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Geochemistry/Astrochemistry
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Research Institution | Osaka University |
Principal Investigator |
HASHIZUME KO 大阪大学, 理学(系)研究科(研究院), 助教 (90252577)
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Project Period (FY) |
2011-04-28 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
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Keywords | 隕石有機物 / 同位体 / 硫黄 / 酸素 / イメージング / 非質量依存同位体分別 / 隕石 / 有機物 / 同位体イメージング / 非質量依存同位体効果 / 硫黄同位体 / 酸素同位体 |
Outline of Final Research Achievements |
Using the isotope imaging technique of sulfur by a secondary ion mass spectrometer, sulfur isotope analyses of organic matter extracted from a primitive meteorite was performed. In the studied sample, large oxygen non-mass-dependent isotope anomalies were previously reported in its organic matter. In the organic matter sample extracted from the carbonaceous chondrite, two micron-sized sulfur-isotope hotspots with 33S/32S and 34S/32S anomalies up to 3.4% and 4.4%, respectively, were observed. This result suggests presence of a large non-mass-dependent sulfur isotope fractionation in meteoritic organic matter.
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Report
(5 results)
Research Products
(16 results)
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[Journal Article] Nitrogen isotopes2011
Author(s)
Hashizume K.
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Journal Title
In "Encyclopedia of Astrobiology" (Eds: Gargaud M., et al.) Springer-Verlag, Berlin Heidelberg
Volume: 1
Pages: 1122-1126
DOI
Related Report
Peer Reviewed
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[Journal Article] Oxygen isotopes2011
Author(s)
Hashizume K.
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Journal Title
In "Encyclopedia of Astrobiology" (Eds: Gargaud M., et al.) Springer-Verlag, Berlin Heidelberg
Volume: 1
Pages: 1196-1200
DOI
Related Report
Peer Reviewed
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