2022 Fiscal Year Final Research Report
Superwind-driven co-evolution between galaxies and intergalactic medium
| Project/Area Number |
16H02166
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | The Open University of Japan |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2021-03-31
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| Keywords | galaxy formation / galaxy evolution / supermassive black hole / intergalactic matter |
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| Outline of Final Research Achievements |
In order to understand the co-evolution between galaxies and intergalactic matter during the course of the cosmic time, quasar absorption line systems found in ultraviolet spectra of quasars provide useful observational tools to investigate the co-evolution. Using ALMA (Atacama Large Millimeter Array) and the Subaru Telescope (8.2 m optical/infrared telescope at Mauna Kea Observatory in Hawaii), we have studied both high redshift starburst/superwind galaxies and extended intergalactic ionized gas clouds, Using these studies, we have obtained important observational constraints on the early evolution of galaxies at high redshift. We have also found firm evidence for a binary supermassive black hole in the nearby AGN, NGC 1068. This discovery reinforces the importance of galaxy mergers in the formation of AGN.
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| Free Research Field |
astronomy
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| Academic Significance and Societal Importance of the Research Achievements |
銀河の誕生と進化を理解するとき、宇宙全体の進化を考慮することが望まれる。これを具現化するには、銀河を取り巻く環境である宇宙空間（銀河間空間）の進化を含めた宇宙の進化を研究する必要が出てくる。銀河は決して孤立系ではなく、銀河間空間と相互作用しながら進化してきているからである。そこで、本研究では銀河と銀河間空間の相互作用の基本的な物理過程を研究し、両者の相互作用がどのように行われてきたかを理解することを研究目的として設定することにした。
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