30 Papers
547 Citations
Kei Ito is an academic researcher from Graduate University for Advanced Studies. The author has contributed to research in topics: Galaxy & Redshift. The author has an hindex of 10, co-authored 16 publications. Previous affiliations of Kei Ito include University of Tokyo.
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Papers
Second Data Release of the Hyper Suprime-Cam Subaru Strategic Program
Hiroaki Aihara,Yusra AlSayyad,Makoto Ando,Robert Armstrong,James Bosch,Eiichi Egami,Hisanori Furusawa,Junko Furusawa,Sumiko Harasawa,Yuichi Harikane,Bau-Ching Hsieh,Hiroyuki Ikeda,Kei Ito,Ikuru Iwata,Tadayuki Kodama,Michitaro Koike,Mitsuru Kokubo,Yutaka Komiyama,Xiangchong Li,Yongming Liang,Yen-Ting Lin,Robert H. Lupton,Nate B. Lust,Lauren A. MacArthur,Ken Mawatari,Sogo Mineo,Hironao Miyatake,Satoshi Miyazaki,Surhud More,Takahiro Morishima,Hitoshi Murayama,Kimihiko Nakajima,Fumiaki Nakata,Atsushi J. Nishizawa,Masamune Oguri,Nobuhiro Okabe,Yuki Okura,Yoshiaki Ono,Ken Osato,Masami Ouchi,Yen-Chen Pan,Andres Plazas Malagon,Paul A. Price,S. L. Reed,Eli S. Rykoff,Takatoshi Shibuya,Mirko Simunovic,Michael A. Strauss,Kanako Sugimori,Yasushi Suto,Nao Suzuki,Masahiro Takada,Yuhei Takagi,Tadafumi Takata,Satoshi Takita,Masayuki Tanaka,Shenli Tang,Dan S. Taranu,Tsuyoshi Terai,Yoshiki Toba,Edwin L. Turner,Hisakazu Uchiyama,Bovornpratch Vijarnwannaluk,Christopher Waters,Yoshihiko Yamada,Naoaki Yamamoto,T. Yamashita +66 more
TL;DR: The first public data release of HSC-SSP is presented in the first 1.7 years of observations (61.5 nights) and each of the Wide, Deep, and UltraDeep layers covers about 108, 26, and 4 square degrees down to depths of i~26.4, ~26.5, and ~27.0 mag, respectively (5sigma for point sources) as mentioned in this paper.
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Evidence for GN-z11 as a luminous galaxy at redshift 10.957
Lin-Hua Jiang,Nobunari Kashikawa,Shu Wang,Gregory Walth,Luis C. Ho,Zheng Cai,Eiichi Egami,Xiaohui Fan,Kei Ito,Kei Ito,Yongming Liang,Yongming Liang,Daniel Schaerer,Daniel P. Stark +13 more
TL;DR: In this article, the authors reported a probable detection of three ultraviolet emission lines from GN-z11, which can be interpreted as the [C iii] λ1907, Ciii] ǫ-1909 doublet and Oǫ]- λ1666 at z = 10.957 ± 0.001 (when the Universe was only ~420 Myr old, or ~3% of its current age).
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An Atlas of Color-selected Quiescent Galaxies at z > 3 in Public JWST Fields
Francesco Valentino,Gabriel B. Brammer,K. Gould,V. Kokorev,Seiji Fujimoto,Christian K. Jespersen,Aswin P. Vijayan,John R. Weaver,Kei Ito,Masayuki Tanaka,O. Ilbert,Georgios E. Magdis,Katherine E. Whitaker,Andreas L. Faisst,Anna Gallazzi,Steven Gillman,Clara Giménez-Arteaga,C. Gómez-Guijarro,Mariko Kubo,Kasper E. Heintz,Michaela Hirschmann,Pascal Oesch,Masato Onodera,F. Rizzo,Minju Lee,Victoria Strait,Sune Toft +26 more
TL;DR: In this article , the results of a systematic search for candidate quiescent galaxies in the distant universe in 11 JWST fields with publicly available observations collected during the first 3 months of operations and covering an effective sky area of ∼145 arcmin2.
Evidence for GN-z11 as a luminous galaxy at redshift 10.957.
Lin-Hua Jiang,Nobunari Kashikawa,Shu Wang,Gregory Walth,Luis C. Ho,Zheng Cai,Eiichi Egami,Xiaohui Fan,Kei Ito,Kei Ito,Yongming Liang,Yongming Liang,Daniel Schaerer,Daniel P. Stark +13 more
TL;DR: In this article, the authors reported a probable detection of three ultraviolet (UV) emission lines from GN-z11, which can be interpreted as the [C III] 1907, C III] 1909 doublet and O III] 1666 at z = 10.957+/-0.001 (when the Universe was only ~420 Myr old, or ~3% of its current age).
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Planck far-infrared detection of hyper suprime-cam protoclusters at z ∼ 4 : hidden AGN and star formation activity.
Mariko Kubo,Jun Toshikawa,Jun Toshikawa,Nobunari Kashikawa,Yi-Kuan Chiang,Roderik Overzier,Hisakazu Uchiyama,David L. Clements,David M. Alexander,Yuichi Matsuda,Tadayuki Kodama,Yoshiaki Ono,Tomotsugu Goto,Tai An Cheng,Kei Ito +14 more
TL;DR: In this paper, the authors performed a stacking analysis of Planck, AKARI, Infrared Astronomical Satellite, Wide-field Infrared Survey (WFOIS), Explorer, and Herschel images of the largest number of (candidate) protoclusters at z ∼ 3.8 selected from the Hyper Suprime-Cam Subaru Strategic Program.
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