2017 Fiscal Year Final Research Report
Formation and evolution of massive galaxies in the early Universe
| Project/Area Number |
15K17617
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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 |
Astronomy
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| Research Institution | National Astronomical Observatory of Japan |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 光赤外天文学 / 銀河形成進化 / 大質量銀河 |
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| Outline of Final Research Achievements |
This research focuses on the formation and evolution of massive galaxies in the early Universe. The main results of the work include (1) discovery of massive galaxies with suppressed star formation activities in the distance universe of redshift of 4, (2) high-resolution imaging reveals that they are physically very compact and we traced the evolution of galaxy sizes back to redshift~4 in the rest-frame optical wavelengths for the first time, and (3) deep follow-up spectroscopy shows that one of these galaxies is likely located at a redshift of 3.87. Further spectroscopy is scheduled and if we fully confirm its redshift, the object will be the most distant spectroscopically confirmed massive quiescent galaxy.
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| Free Research Field |
銀河進化
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