| Project/Area Number |
19540238
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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 | The University of Tokyo |
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Principal Investigator |
MOTOHARA Kentaro The University of Tokyo, 大学院・理学系研究科, 准教授 (90343102)
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| Co-Investigator(Kenkyū-buntansha) |
嶋作 一大 東京大学, 大学院・理学系・研究科, 准教授 (00251405)
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| Co-Investigator(Renkei-kenkyūsha) |
嶋作 一大 東京大学, 理学系研究科, 准教授 (00251405)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2009: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2008: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2007: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 光学赤外線天文学 / 銀河天文学 / 銀河形成 / 近赤外線 / サブミリ波 / 広視野撮像 / 光赤外線天文学 |
|---|
| Research Abstract |
We have carried out NIR wide-field imaging of the Subaru Deep Field (0.25 sq. degree) by the UKIRT/WFCAM instrument, and created a catalog of z～2 galaxies. Utilizing this catalog, we measured the clustering properties of z～2 star forming galaxies and found that these galaxies will evolve into present-day spiral galaxies. Deficiency of less-massive passive galaxies at z～2 is also found, suggesting the elliptical galaxies with stellar mass less than ～10^<11> solar mass are still under their formation phase. Following Subaru/MOIRCS NIR spectroscopy showed that the metallicity in these galaxies are as high as that in the present-day local galaxies, indicating that these galaxies have already experienced quite much amount of star-formation activities, and their inter-stellar gas has polluted by heavy elements.
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