2009 Fiscal Year Final Research Report
Probe the reionization process with first galaxies
| Project/Area Number |
19540246
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | National Astronomical Observatory of Japan |
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Principal Investigator |
KASHIKAWA Nobunari National Astronomical Observatory of Japan, 光赤外研究部, 准教授 (00290883)
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| Co-Investigator(Kenkyū-buntansha) |
SHIMASAKU Kazuhiro 東京大学, 理学研究科, 准教授 (00251405)
MOTOHARA Kentaro 東京大学, 理学研究科, 助教 (90343102)
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| Project Period (FY) |
2007 – 2009
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| Keywords | 再電離 / 初期宇宙 / ライマンα輝線銀河 / ライマンブレイク銀河 / 銀河形成 / 銀河進化 / 宇宙の大規模構造 / 遠方宇宙 |
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| Research Abstract |
We have obtained the largest spectroscopic sample of Lyman alpha emitting galaxies at z=5.7 and 6.5 by using Subaru and Keck telescopes. We have derived a more accurate Lyα luminosity function of LAEs at z=6.5, which reveals an apparent deficit at the bright end that observed at z=5.7. This result may imply that the reionization of the universe has not been completed at z=6.5.
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