2023 Fiscal Year Final Research Report
Spatially Resolving Submillimeter galaxies with ALMA
| Project/Area Number |
20K14526
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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 16010:Astronomy-related
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| Research Institution | Hokkai-Gakuen University (2023)
National Astronomical Observatory of Japan (2020-2022) |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2024-03-31
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| Keywords | 銀河天文学 |
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| Outline of Final Research Achievements |
In this research project, we used the ALMA telescope to observe galaxies that could be precursors of elliptical galaxies in the distant Universe, in order to unravel how massive galaxies evolve into elliptical galaxies. The targets are broadly divided into two galaxy populations: multiple massive galaxies at z=2 and a single massive galaxy at z=6. We have observed the formation process of a bulge in the central regions of elliptical galaxy ancestors from different epochs. We also successfully measured the abundance of heavy elements in galaxies in preparation for the launch of the James Webb Space Telescope.
Despite challenges such as the interruption of ALMA telescope operations due to COVID-19, I managed to publish three peer-reviewed papers as lead author during the research period.
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| Free Research Field |
天文学
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| Academic Significance and Societal Importance of the Research Achievements |
筆頭著者として発表した３本の論文のうちの１つについては、アルマ望遠鏡のホームページでプレスリリースを行った。現在私たちの身の回りに当たり前のように存在している窒素や酸素といった元素は宇宙誕生時には存在しておらず、宇宙の歴史と共にこれらの重元素が増えてきたことを多くに人に知ってもらうことができた。
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