2013 Fiscal Year Final Research Report
Stellar mass growth of galaxies at z=1-3
| Project/Area Number |
23740152
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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 | Ehime University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Keywords | 光赤外線天文学 / 銀河天文学 / 銀河形成 / 銀河進化 |
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| Research Abstract |
Using the Subaru telescope, we investigated the evolution of the stellar mass function and the star formation rate as a function of stellar mass at 1<z<3, when the stellar mass density in the univrese rapidly increased, in order to study how the stellar mass growth of galaxies proceeded and how it depends on environment.
Our results sugget that more massive star-forming galaxies at that time should halt their star formation more immediately and they evolve into passive galaxies. We also found that the environment mainly affects the fraction of star-forming galaxies in massive galaxy population at z~1 and does not affect the star formation rate of star-forming galaxies, and that massive passive galaxies already exist in a protocluster selected by the overdensity of Lyman alpha emitters at z=2.4.
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[Journal Article] Constaints on the faint end of the quasar luminosity function at z~5 in the COSMOS field2012
Author(s)
Ikeda, H., Nagao, T., Matsuoka, K., Taniguchi, Y., Shioya, Y., Kajisawa, M., et al. (他9名)
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Journal Title
The Astrophysical Journal
Volume: 756
Pages: 180
Peer Reviewed
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[Journal Article] The Role of Galaxy Interaction in Environmantal Dependence of the Star Formation Activity at z~1.22012
Author(s)
Ideue, Y., Taniguchi, Y., Nagao, T., Shioya, Y., Kajisawa, M., et al. (他7名)
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Journal Title
The Astrophysical Journal
Volume: 747
Pages: 42
Peer Reviewed
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