| Project/Area Number |
25400220
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | The University of Tokyo (2014-2015)
Tohoku University (2013) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ISHIHARA Daisuke 名古屋大学, 理学研究科, 特任講師 (30507835)
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| Co-Investigator(Renkei-kenkyūsha) |
DOI Yasuo 東京大学, 総合文化研究科, 助教 (70292844)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 黄道光 / 黄道放射 / 惑星間塵 / 赤外線衛星 / あかり / 小惑星 / 彗星 / 赤外線 / 赤外線観測 |
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| Outline of Final Research Achievements |
Zodiacal emission is thermal emission from interplanetary dust in our solar system. We analyzed zodiacal emission observed by the AKARI mid- and far-infrared all-sky survey, which covers 97% of the entire sky during the period 2006 April to 2007 August in six photometric bands, with central wavelengths of 9, 18 (mid-infrared), 65, 90, 140, and 160 μm (far-infrared). For the far-infrared survey data, we investigate the distribution of the small-scale dust-band structures in the AKARI all-sky maps and construct template maps of the asteroidal dust bands and the circumsolar ring components. Mid-infrared data suggests that the size of the smooth cloud, a dominant component in the zodiacal dust cloud model, is about 10% more compact than previously thought, and we detect a significant isotropically distributed dust cloud component.
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