Mapping of ionization degree based on Subaru/HSC observations and cosmic reionization simulation
Project/Area Number |
26287034
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Astronomy
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Research Institution | Osaka Sangyo University |
Principal Investigator |
Inoue Akio 大阪産業大学, デザイン工学部, 准教授 (30411424)
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Co-Investigator(Renkei-kenkyūsha) |
Ouchi Masami 東京大学, 宇宙線研究所, 准教授 (40595716)
Kashikawa Nobunari 国立天文台, TMT推進室, 准教授 (00290883)
Hasegawa Kenji 名古屋大学, 理学研究科, 特任助教 (20536627)
Ishiyama Tomoaki 千葉大学, 統合情報センター, 准教授 (90616426)
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Research Collaborator |
Shimasaku Kazuhiro 東京大学, 理学系研究科, 准教授
Shimizu Ikkoh 大阪大学, 理学研究科, 特任研究員
Mawatari Ken 大阪産業大学, 教養部, 博士研究員
|
Project Period (FY) |
2014-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2017)
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Budget Amount *help |
¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
Fiscal Year 2016: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
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Keywords | 宇宙再電離 / 光学赤外線天文学 / 銀河形成 / 銀河進化 / 光赤外線天文学 / 理論天文学 / 銀河間中性水素 / 銀河形成進化 |
Outline of Final Research Achievements |
To understand cosmic reionization, one of the greatest problems in the modern observational cosmology, we have developed a novel method for mapping the ionization degree of the intergalactic hydrogen. The method is based on the observations with the Hyper Suprime-Cam (HSC) at Subaru Telescope and a large-scale numerical simulation of reionization including a theoretical model of Lyman alpha emitters (LAEs). The LAE simulation has been published in a refereed journal. The Subaru/HSC observational part has been extended to a larger framework using 5 custom-made narrowband filters for HSC, a Subaru Intensive Program called CHORUS (Cosmic HydrOgen Reionization Unveiled with Subaru). In parallel, a number of research papers were published as an outcome of this project: Intergalactic hydrogen in/around a redshift ~3 proto-cluster of galaxies, ionization emissivity of galaxies at redshift ~3, spectral modeling of primordial galaxies, and oxygen observations from high redshift galaxies.
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Report
(4 results)
Research Products
(23 results)
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[Journal Article] The Spectral Evolution of the First Galaxies. III. Simulated James Webb Space Telescope Spectra of Reionization-epoch Galaxies with Lyman-continuum Leakage2017
Author(s)
Zackrisson, E., Binggeli, C., Finlator, K., Gnedin, N. Y., Paardekooper, J.-P., Shimizu, I., Inoue, A. K., Jensen, H., Micheva, G., Khochfar, S., Dalla Vecchia, C.
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Journal Title
The Astrophysical Journal
Volume: 836
Issue: 1
Pages: 78-78
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Detection of an oxygen emission line from a high-redshift galaxy in the reionization epoch2016
Author(s)
Inoue, Akio K.; Tamura, Yoichi; Matsuo, Hiroshi; Mawatari, Ken; Shimizu, Ikkoh; Shibuya, Takatoshi; Ota, Kazuaki; Yoshida, Naoki; Zackrisson, Erik; Kashikawa, Nobunari; Kohno, Kotaro; Umehata, Hideki; Hatsukade, Bunyo; Iye, Masanori; Matsuda, Yuichi; Okamoto, Takashi; Yamaguchi, Yuki
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Journal Title
Science
Volume: 325
Issue: 6293
Pages: 1559-1562
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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[Journal Article] Discovery of a Damped Lyα Absorber at z = 3.3 along a Galaxy Sight-line in the SSA22 Field2016
Author(s)
Mawatari, K., Inoue, A.K., Kousai, K., Hayashino, T., Cooke, R., Prochaska, J.X., Yamada, T., Matsuda, Y.
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Journal Title
The Astrophysical Journal
Volume: 817
Issue: 2
Pages: 161-166
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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