K
Kazuaki Ota
Researcher at University of Tokyo
Publications - 44
Citations - 5580
Kazuaki Ota is an academic researcher from University of Tokyo. The author has contributed to research in topics: Galaxy & Hubble Deep Field. The author has an hindex of 30, co-authored 43 publications receiving 5429 citations. Previous affiliations of Kazuaki Ota include Max Planck Society.
Papers
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Journal ArticleDOI
STATISTICS OF 207 Lyα EMITTERS AT A REDSHIFT NEAR 7: CONSTRAINTS ON REIONIZATION AND GALAXY FORMATION MODELS*
Masami Ouchi,Kazuhiro Shimasaku,Hisanori Furusawa,Tomoki Saito,Makiko Yoshida,Masayuki Akiyama,Yoshiaki Ono,Toru Yamada,Kazuaki Ota,Nobunari Kashikawa,Masanori Iye,Tadayuki Kodama,Sadanori Okamura,Chris Simpson,Michitoshi Yoshida +14 more
TL;DR: In this paper, the authors presented the Ly{alpha} luminosity function (LF), clustering measurements, and Ly{α} line profiles based on the largest sample to date of 207 Lyα emitters (LAEs) at z = 6.6 on the 1 deg{sup 2} sky of Subaru/XMM-Newton Deep Survey field.
Journal ArticleDOI
Statistics of 207 Lya Emitters at a Redshift Near 7: Constraints on Reionization and Galaxy Formation Models
Masami Ouchi,Kazuhiro Shimasaku,Hisanori Furusawa,Tomoki Saito,Makiko Yoshida,Masayuki Akiyama,Yoshiaki Ono,Toru Yamada,Kazuaki Ota,Nobunari Kashikawa,Masanori Iye,Tadayuki Kodama,Sadanori Okamura,Chris Simpson,Michitoshi Yoshida +14 more
TL;DR: In this paper, the authors presented Lya luminosity function (LF), clustering measurements, and Lya line profiles based on the largest sample, to date, of 207 Lya emitters (LAEs) at z=6.6 on the 1-deg^2 sky of Subaru/XMM-Newton Deep Survey (SXDS) field.
Journal ArticleDOI
Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties
Masami Ouchi,Kazuhiro Shimasaku,S. Okamura,Hisanori Furusawa,Nobunari Kashikawa,Kazuaki Ota,Masao Doi,Masaru Hamabe,Masashi Kimura,Yutaka Komiyama,Masayuki Miyazaki,Satoshi Miyazaki,Fumiaki Nakata,Masaki Sekiguchi,M. Yagi,Naoki Yasuda +15 more
TL;DR: In this paper, photometric properties of Lyman Break Galaxies (LBGs) at z=3.5-5.2 were investigated based on large samples of 2,600 LBGs detected in deep (i'~27) and wide-field (1,200 arcmin^2) images taken in the Subaru Deep Field and the Subaru/XMM Deep Field (SXDF).
Journal ArticleDOI
Subaru Deep Survey. VI. A Census of Lyman Break Galaxies at z ≃ 4 and 5 in the Subaru Deep Fields: Clustering Properties*
Masami Ouchi,Kazuhiro Shimasaku,Kazuhiro Shimasaku,Sadanori Okamura,Sadanori Okamura,Hisanori Furusawa,Nobunari Kashikawa,Kazuaki Ota,Mamoru Doi,Masaru Hamabe,Masahiko Kimura,Yutaka Komiyama,Masayuki Miyazaki,Satoshi Miyazaki,Fumiaki Nakata,Maki Sekiguchi,Masafumi Yagi,Naoki Yasuda +17 more
TL;DR: In this article, the photometric properties of Lyman break galaxies (LBGs) at z = 3.5-5.2 were investigated based on large samples of 2600 LBGs detected in deep (i' 27) and wide-field (1200 arcmin2) images taken in the Subaru Deep Field (SDF) and the XMM-Newton deep field (SXDF) using broadband B, V, R, i', and z' filters.
Journal ArticleDOI
A galaxy at a redshift z = 6.96
Masanori Iye,Masanori Iye,Kazuaki Ota,Nobunari Kashikawa,Hisanori Furusawa,Tetsuya Hashimoto,Takashi Hattori,Yuichi Matsuda,Tomoki Morokuma,Masami Ouchi,Kazuhiro Shimasaku +10 more
TL;DR: A spectroscopic redshift of z = 6.96 is reported for a galaxy whose spectrum clearly shows Lyman-α emission at 9,682 Å, indicating active star formation at a rate of ∼10M[circdot] yr-1, which demonstrates that galaxy formation was under way when the Universe was only ∼6 per cent of its present age.