Peculiar abundance patterns of extremely metal-poor stars in dwarf galaxies and our Galaxy and the mass function of first stars
Project/Area Number |
26400222
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Astronomy
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Research Institution | The University of Tokyo |
Principal Investigator |
Nomoto Ken'ichi 東京大学, カブリ数物連携宇宙研究機構, 上級科学研究員 (90110676)
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Co-Investigator(Kenkyū-buntansha) |
鈴木 知治 中部大学, 工学部, 准教授 (20280935)
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Project Period (FY) |
2014-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | 矮小銀河 / 初代星 / 金属欠乏星 / 超新星 / 元素合成 |
Outline of Final Research Achievements |
In order to clarify the nature first stars in the Universe, i.e., their mass function, properties of explosion, and nucleosynthesis, we have studied the origin of peculiar abundance patterns of extremely metal-poor stars in dwarf galaxies and our Galaxy. Many of these stars show very large ratios of C/Fe and Zn/Fe. We have found that these patterns are well-reproduced by nucleosynthesis yields of hypernova explosions of stars with masses of 10 - 40 solar-mass. This suggests that the mass function of first stars would have a peak in this mass range.
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Report
(5 results)
Research Products
(21 results)
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[Journal Article] Pulsational Pair Instability Model for Superluminous Supernova PTF12dam: Interaction and Radioactive Decay2017
Author(s)
Tolstov, A., Nomoto, K., Blinnikov, S., Sorokina, E., Quimby, R., Baklanov, P.
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Journal Title
The Astrophysical Journal
Volume: 835
Issue: 2
Pages: 266-266
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Dust Production Factories in the Early Universe: Formation of Carbon Grains in Red-supergiant Winds of Very Massive Population III Stars2014
Author(s)
Nozawa, T., Yoon, S.-C., Maeda, K., Kozasa, T., Nomoto, K., Langer, N.
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Journal Title
The Astrophysical Journal Letters
Volume: 787
Issue: 2
Pages: L17-L17
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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