M
Masashi Chiba
Researcher at Tohoku University
Publications - 200
Citations - 11817
Masashi Chiba is an academic researcher from Tohoku University. The author has contributed to research in topics: Galaxy & Milky Way. The author has an hindex of 49, co-authored 192 publications receiving 10656 citations. Previous affiliations of Masashi Chiba include National Institutes of Natural Sciences, Japan & Graduate University for Advanced Studies.
Papers
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Journal ArticleDOI
Kinematics of Metal-poor Stars in the Galaxy. III. Formation of the Stellar Halo and Thick Disk as Revealed from a Large Sample of Nonkinematically Selected Stars
Masashi Chiba,Timothy C. Beers +1 more
TL;DR: In this paper, a detailed analysis of the space motions of 1203 solar-neighborhood stars with metal abundances [Fe/H] ≤ -0.6 is presented.
Journal ArticleDOI
Two stellar components in the halo of the Milky Way
Daniela Carollo,Timothy C. Beers,Young Sun Lee,Masashi Chiba,John E. Norris,Ronald Wilhelm,Thirupathi Sivarani,B. Marsteller,Jeffrey A. Munn,Coryn A. L. Bailer-Jones,Paola Re Fiorentin,Paola Re Fiorentin,Donald G. York +12 more
TL;DR: It is shown that the halo is indeed clearly divisible into two broadly overlapping structural components—an inner and an outer halo—that exhibit different spatial density profiles, stellar orbits and stellar metallicities (abundances of elements heavier than helium).
Journal ArticleDOI
Structure and Kinematics of the Stellar Halos and Thick Disks of the Milky Way Based on Calibration Stars from Sloan Digital Sky Survey DR7
Daniela Carollo,Daniela Carollo,Timothy C. Beers,Masashi Chiba,John E. Norris,Kenneth C. Freeman,Young Sun Lee,Željko Ivezić,Constance M. Rockosi,Brian Yanny +9 more
TL;DR: In this article, the structure and kinematics of the recognized stellar components of the Milky Way are explored, based on well-determined atmospheric parameters and Kinematic quantities for 32360 "calibration stars" from the Sloan Digital Sky Survey (SDSS) and its first extension, which included the sub-survey Sloan Extension for Galactic Understanding and Exploration (SEGUE).
Journal ArticleDOI
The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
Hiroaki Aihara,Nobuo Arimoto,Robert Armstrong,Stephane Arnouts,Neta A. Bahcall,S. J. Bickerton,James Bosch,Kevin Bundy,Peter Capak,James H. H. Chan,Masashi Chiba,Jean Coupon,Eiichi Egami,Motohiro Enoki,F. Finet,Hiroki Fujimori,Seiji Fujimoto,Hisanori Furusawa,J. Furusawa,Tomotsugu Goto,Andy D. Goulding,Johnny P. Greco,Jenny E. Greene,James E. Gunn,Takashi Hamana,Yuichi Harikane,Yasuhiro Hashimoto,Takashi Hattori,Masao Hayashi,Yusuke Hayashi,Krzysztof G. Hełminiak,Ryo Higuchi,Chiaki Hikage,Paul T. P. Ho,Bau-Ching Hsieh,Kuiyun Huang,Song Huang,Hiroyuki Ikeda,Masatoshi Imanishi,Akio K. Inoue,K. Iwasawa,Ikuru Iwata,Anton T. Jaelani,Hung-Yu Jian,Y. Kamata,Hiroshi Karoji,Nobunari Kashikawa,N. Katayama,Satoshi Kawanomoto,Issha Kayo,Jun Koda,Michitaro Koike,Takashi Kojima,Yutaka Komiyama,Akira Konno,S. Koshida,Yusei Koyama,Haruka Kusakabe,A. Leauthaud,Chien-Hsiu Lee,Lihwai Lin,Yen-Ting Lin,Robert H. Lupton,Rachel Mandelbaum,Yoshiki Matsuoka,Elinor Medezinski,S. Mineo,Shoken M. Miyama,Hironao Miyatake,Satoshi Miyazaki,Rieko Momose,A. More,Surhud More,Y. Moritani,Takashi J. Moriya,Tomoki Morokuma,Shiro Mukae,Ryoma Murata,Hitoshi Murayama,Tohru Nagao,Fumiaki Nakata,Mana Niida,Hiroko Niikura,Atsushi J. Nishizawa,Yoshiyuki Obuchi,Masamune Oguri,Yukie Oishi,Nobuhiro Okabe,Yuki Okura,Yoshiaki Ono,Masato Onodera,M. Onoue,Ken Osato,Masami Ouchi,P. A. Price,Tae-Soo Pyo,M. Sako,Sakurako Okamoto,Marcin Sawicki,Takatoshi Shibuya,Kazuhiro Shimasaku,Atsushi Shimono,Masato Shirasaki,John D. Silverman,Melanie Simet,Joshua S. Speagle,David N. Spergel,Michael A. Strauss,Yuma Sugahara,Naoshi Sugiyama,Yasushi Suto,Sherry H. Suyu,Nao Suzuki,Philip J. Tait,Tadafumi Takata,Masahiro Takada,Naoyuki Tamura,Masayuki Tanaka,Masaomi Tanaka,Yoko Tanaka,T. Terai,Yuichi Terashima,Yoshiki Toba,Jun Toshikawa,Edwin L. Turner,Tomohisa Uchida,Hisakazu Uchiyama,Keiichi Umetsu,Fumihiro Uraguchi,Yuji Urata,Tomonori Usuda,Yousuke Utsumi,Shiang-Yu Wang,Wei-Hao Wang,Kenneth C. Wong,Kiyoto Yabe,Yoshihiko Yamada,Hitomi Yamanoi,Naoki Yasuda,Sherry Yeh,Atsunori Yonehara,Suraphong Yuma +141 more
TL;DR: Hyper Suprime-Cam (HSC) is a wide-field imaging camera on the prime focus of the 8.2m Subaru telescope on the summit of Maunakea in Hawaii as mentioned in this paper.
Journal ArticleDOI
Structure and Kinematics of the Stellar Halos and Thick Disks of the Milky Way Based on Calibration Stars from SDSS DR7
Daniela Carollo,Timothy C. Beers,Masashi Chiba,John E. Norris,Kenneth C. Freeman,Young Sun Lee,Zeljko Ivezic,Constance M. Rockosi,Brian Yanny +8 more
TL;DR: In this article, the structure and kinematics of the recognized stellar components of the Milky Way are explored, based on well-determined atmospheric parameters and Kinematic quantities for 32360 calibration stars from the Sloan Digital Sky Survey (SDSS) and its first extension, which included the sub-survey SEGUE: Sloan Extension for Galactic Understanding and Exploration.