| Project/Area Number |
20K14456
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 15010:Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics
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| Research Institution | Hokkaido University |
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Principal Investigator |
Pettitt Alex 北海道大学, 高等教育推進機構, 助教 (40792693)
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| Project Period (FY) |
2020-04-01 – 2022-03-31
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| Project Status |
Discontinued (Fiscal Year 2021)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Keywords | galaxies / star formation / numerical simulation / interstellar medium / spiral arms |
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| Outline of Research at the Start |
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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| Outline of Annual Research Achievements |
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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