| Project/Area Number |
18K13589
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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 | National Astronomical Observatory of Japan |
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Principal Investigator |
Lu Xing 国立天文台, アルマプロジェクト, 特任研究員 (40794425)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
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| Keywords | Galactic Center / Star Formation Rate / Central Molecular Zone / Star Formation |
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| Outline of Final Research Achievements |
I used high resolution interferometer observations to study the star formation activities in the so-called Central Molecular Zone around the center of our Galaxy. I found that the star formation rate of the whole Central Molecular Zone as well as those of most individual molecular clouds in the Central Molecular Zone are at least 10 times lower than expected. I also found that star formation at small spatial scales (smaller than 0.3 light years) in this zone is just normal. Therefore, the key of the inefficient star formation in this zone must be in the large spatial scales (a few light years and larger), for example, strong turbulence that presents the clouds from collapsing.
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| Academic Significance and Societal Importance of the Research Achievements |
The research provides new insights into star formation in the extreme environments in the Central Molecular Zone, and changes the preconception that the Central Molecular Zone around our Galactic Center is not suitable for star formation.
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