2011 Fiscal Year Final Research Report
Laser guide star adaptive optics studies of the formation history of galaxies
| Project/Area Number |
19104004
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| Research Category |
Grant-in-Aid for Scientific Research (S)
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| Allocation Type | Single-year Grants |
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| Research Field |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
IYE Masanori 国立天文台, 光赤外研究部, 教授 (30111446)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKAMI Hideki 国立天文台, ハワイ観測所, 教授 (00270455)
HAYANO Yutaka 国立天文台, ハワイ観測所, 助教 (80390623)
KASHIKAWA Nobunari 国立天文台, 光赤外研究部, 准教授 (00290883)
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| Project Period (FY) |
2007 – 2011
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| Keywords | 補償光学 / レーザーガイド / 銀河形成 / 可変形状鏡 / 波面計測 |
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| Research Abstract |
The team developed a laser guide star adaptive optics system and improved the spatial resolution of Subaru Telescope by an order of magnitude. The system is offered for general users and well used for various high resolution observations. The research group led by the PI found the most distant galaxy at a red shift of 7.215, namely 12.9 billion light years away. By studying the galaxy count at high red shift, they concluded that the cosmic re-ionization(the cosmic dawn) took place at about that period.
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