2017 Fiscal Year Final Research Report
Outer solar system revealed by small high-cadence observation systems
| Project/Area Number |
16K17796
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
Arimatsu Ko 国立天文台, 天文情報センター, 特別客員研究員 (70770808)
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| Research Collaborator |
Tsumura Kohji 東北大学, 学際科学フロンティア研究所, 助教 (60579960)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 太陽系外縁部 / 高時間分解能天文学 |
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| Outline of Final Research Achievements |
In the present study, a unique method to observe trans-Neptunian objects (TNOs) with radii of 1-10 km (kilometre-sized) has been developed. Since these kilometre-sized TNOs are too faint to detect even with giant telescopes, monitoring of stars has been performed with two small observation systems to detect a small TNO by observing a moment when it hides a brighter background star (stellar occultation). From the two-year observations of the stellar occultations with newly-developed observation systems, a surface number density of kilometre-sized TNOs is obtained.
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| Free Research Field |
太陽系天文学
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