| 研究課題/領域番号 |
20K14456
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分15010:素粒子、原子核、宇宙線および宇宙物理に関連する理論
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| 研究機関 | 北海道大学 |
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研究代表者 |
Pettitt Alex 北海道大学, 高等教育推進機構, 助教 (40792693)
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| 研究期間 (年度) |
2020-04-01 – 2022-03-31
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| 研究課題ステータス |
中途終了 (2021年度)
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| 配分額 *注記 |
2,860千円 (直接経費: 2,200千円、間接経費: 660千円)
2022年度: 650千円 (直接経費: 500千円、間接経費: 150千円)
2021年度: 1,040千円 (直接経費: 800千円、間接経費: 240千円)
2020年度: 1,170千円 (直接経費: 900千円、間接経費: 270千円)
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| キーワード | galaxies / star formation / numerical simulation / interstellar medium / spiral arms |
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| 研究開始時の研究の概要 |
Galaxies display a variety of different features, such as spiral arms. It is not well understood how these features impact the internal properties of galaxy, such as how well it can form stars from dense gas. This work will improve our understanding though numerical simulations of observed galaxies.
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| 研究実績の概要 |
This project investigated the role of galactic structure in determining how a galaxy can form stars from its gas within. Simulations were performed of three nearby spiral galaxies and were found to be remarkably similar in their evolution, despite their different rotational rates and distribution of stars and dark matter. Some smaller differences were found though, such as how rapidly gas is depleted with radius, which will be the subject of a number of in papers (in preparation). These galaxies are the first building blocks of the larger BESPOKE (Better Extragalactic Simulation Physics on Known Examples) international collaborative project, which will explore a wider range of targets and breadth of physics. The initial conditions will also be made publicly available in the near future for the use of other researchers. Unfortunately the principal investigator moved to an institute overseas so only the first year of work out of the planned three was conducted, but they will pick up this work upon relocation with continued collaboration with researchers in Japan and overseas.
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