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Results 1 - 30 of 30

EMPRESS. X. Spatially resolved mass-metallicity relation in extremely metal-poor galaxies: evidence of episodic star-formation fueled by a metal-poor gas infall
- Virtual Journal - Volume 22, Issue 50 - article #4
- Kimihiko Nakajima, Masami Ouchi, Yuki Isobe, Yi Xu, Shinobu Ozaki, Tohru Nagao, Akio K. Inoue, Michael Rauch, Haruka Kusakabe, Masato Onodera, Moka Nishigaki, Yoshiaki Ono, Yuma Sugahara, Takashi Hattori, Yutaka Hirai, Takuya Hashimoto, Ji Hoon Kim, Takashi J. Moriya, Hiroto Yanagisawa, Shohei Aoyama, Seiji Fujimoto, Hajime Fukushima, Keita Fukushima, Yuichi Harikane, Shun Hatano, Kohei Hayashi, Tsuyoshi Ishigaki, Masahiro Kawasaki, Takashi Kojima, Yutaka Komiyama, Shuhei Koyama, Yusei Koyama, Chien-Hsiu Lee, Akinori Matsumoto, Ken Mawatari, Kentaro Motohara, Kai Murai, Kentaro Nagamine, Minami Nakane, Tomoki Saito, Rin Sasaki, Takatoshi Shibuya, Akihiro Suzuki, Tsutomu T. Takeuchi, Hiroya Umeda, Masayuki Umemura, Kuria Watanabe, Kiyoto Yabe, Hidenobu Yajima, Yechi Zhang
- https://arxiv.org/abs/2412.04541
EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-Poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension. (arXiv:2203.09617v2 [astro-ph.CO] UPDATED)
- Virtual Journal - Volume 20, Issue 35 - article #3
- Akinori Matsumoto, Masami Ouchi, Kimihiko Nakajima, Masahiro Kawasaki, Kai Murai, Kentaro Motohara, Yuichi Harikane, Yoshiaki Ono, Kosuke Kushibiki, Shuhei Koyama, Shohei Aoyama, Masahiro Konishi, Hidenori Takahashi, Yuki Isobe, Hiroya Umeda, Yuma Sugahara, Masato Onodera, Kentaro Nagamine, Haruka Kusakabe, Yutaka Hirai, Takashi J. Moriya, Takatoshi Shibuya, Yutaka Komiyama, Keita Fukushima, Seiji Fujimoto, Takashi Hattori, Kohei Hayashi, Akio K. Inoue, Shotaro Kikuchihara, Takashi Kojima, Yusei Koyama, Chien-Hsiu Lee, Ken Mawatari, Takashi Miyata, Tohru Nagao, Shinobu Ozaki, Michael Rauch, Tomoki Saito, Akihiro Suzuki, Tsutomu T. Takeuchi, Masayuki Umemura, Yi Xu, Kiyoto Yabe, Yechi Zhang, Yuzuru Yoshii
- http://arxiv.org/abs/2203.09617
EMPRESS. II. Highly Fe-enriched Metal-poor Galaxies with ∼1.0 (Fe/O) ⊙ and 0.02 (O/H) ⊙ : Possible Traces of Supermassive (>300 M ⊙ ) Stars in Early Galaxies
- Virtual Journal - Volume 19, Issue 21 - article #33
- Takashi Kojima, Masami Ouchi, Michael Rauch, Yoshiaki Ono, Kimihiko Nakajima, Yuki Isobe, Seiji Fujimoto, Yuichi Harikane, Takuya Hashimoto, Masao Hayashi, Yutaka Komiyama, Haruka Kusakabe, Ji Hoon Kim, Chien-Hsiu Lee, Shiro Mukae, Tohru Nagao, Masato Onodera, Takatoshi Shibuya, Yuma Sugahara, Masayuki Umemura,, Kiyoto Yabe
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/913/1/22
Star Formation in Isolated Dwarf Galaxies Hosting Tidal Debris: Extending the Dwarf–Dwarf Merger Sequence
- Virtual Journal - Volume 18, Issue 7 - article #8
- Erin Kado-Fong, Jenny E. Greene, Johnny P. Greco, Rachael Beaton, Andy D. Goulding, Sean D. Johnson,, Yutaka Komiyama
- The Astronomical Journal
- http://iopscience.iop.org/1538-3881/159/3/103
R -process Element Cosmic Rays from Neutron Star Mergers
- Virtual Journal - Volume 15, Issue 37 - article #21
- Yutaka Komiya, Toshikazu Shigeyama
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/846/2/143
R-process Element Cosmic Rays from Neutron Star Mergers. (arXiv:1708.05638v1 [astro-ph.HE])
- Virtual Journal - Volume 15, Issue 34 - article #13
- Yutaka Komiya, Toshikazu Shigeyama
- http://arxiv.org/abs/1708.05638
A New Milky Way Satellite Discovered in the Subaru/Hyper Suprime-Cam Survey
- Virtual Journal - Volume 14, Issue 47 - article #23
- Daisuke Homma, Masashi Chiba, Sakurako Okamoto, Yutaka Komiyama, Masayuki Tanaka, Mikito Tanaka, Miho N. Ishigaki, Masayuki Akiyama, Nobuo Arimoto, JosÃ© A. Garmilla, Robert H. Lupton, Michael A. Strauss, Hisanori Furusawa, Satoshi Miyazaki, Hitoshi Murayama, Atsushi J. Nishizawa, Masahiro Takada, Tomonori Usuda,, Shiang-Yu Wang
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/832/1/21
Contribution of Neutron Star Mergers to the r-Process Chemical Evolution in the Hierarchical Galaxy Formation
- Virtual Journal - Volume 14, Issue 42 - article #29
- Yutaka Komiya, Toshikazu Shigeyama
- The Astrophysical Journal
- http://iopscience.iop.org/0004-637X/830/2/76
Contribution of Neutron Star Mergers to the R-process Chemical Evolution in the Hierarchical Galaxy Formation. (arXiv:1608.01772v1 [astro-ph.GA])
- Virtual Journal - Volume 14, Issue 33 - article #4
- Yutaka Komiya, Toshikazu Shigeyama
- http://arxiv.org/abs/1608.01772
Population III stars around the Milky Way
- Virtual Journal - Volume 14, Issue 13 - article #10
- Yutaka Komiya, Takuma Suda, Masayuki Y. Fujimoto
- arXiv.org - Astrophysics - Volume: 2016, Issue: 25 Mar
- arXiv:1603.06096 [pdf, ps, other]
The Most Iron-deficient Stars as the Polluted Population III Stars
- Virtual Journal - Volume 13, Issue 29 - article #29
- Yutaka Komiya, Takuma Suda, and Masayuki Y. Fujimoto
- The Astrophysical Journal Letters - Volume: 808, Issue: 2
- View article PDF (595 KB)
The most iron-deficient stars as the polluted population III stars
- Virtual Journal - Volume 13, Issue 25 - article #13
- Yutaka Komiya, Takuma Suda, Masayuki Y. Fujimoto
- arXiv.org - Astrophysics - Volume: 2015, Issue: 10 Jul
- arXiv:1507.01664 [pdf, ps, other]
The New Model of Chemical Evolution of r-process Elements Based on the Hierarchical Galaxy Formation. I. Ba and Eu
- Virtual Journal - Volume 12, Issue 18 - article #34
- Yutaka Komiya, Shimako Yamada, Takuma Suda, and Masayuki Y. Fujimoto
- The Astrophysical Journal - Volume: 783, Issue: 2
- View article PDF (2.90 MB)
The New Model of Chemical Evolution of r-process Elements Based on The Hierarchical Galaxy Formation I: Ba and Eu
- Virtual Journal - Volume 12, Issue 5 - article #8
- Yutaka Komiya, Shimako Yamada, Takuma Suda, Masayuki Y. Fujimoto
- arXiv.org - Astrophysics - Volume: 2014, Issue: 31 Jan
- arXiv:1401.6261 [pdf, ps, other]
The Stellar Abundances for Galactic Archaeology (SAGA) Database – III. Analysis of enrichment histories for elements and two modes of star formation during the early evolution of the Milky Way
- Virtual Journal - Volume 12, Issue 4 - article #31
- Shimako Yamada, Takuma Suda, Yutaka Komiya, Wako Aoki, and Masayuki Y. Fujimoto
- Monthly Notices of the Royal Astronomical Society - Volume: 436, Issue: 2
- Abstract Full Text (HTML) Full Text (PDF)
Current signatures and search for Pop. III stars in the Local Universe
- Virtual Journal - Volume 11, Issue 51 - article #4
- Yutaka Komiya, Takuma Suda, Masayuki Fujimoto
- arXiv.org - Astrophysics - Volume: 2013, Issue: 20 Dec
- arXiv:1312.5069 [pdf, ps, other]
The Stellar Abundances for Galactic Archaeology (SAGA) Database III - Analysis of Enrichment Histories for Elements and Two Modes of Star Formation during the Early Evolution of Milky Way
- Virtual Journal - Volume 11, Issue 38 - article #17
- Shimako Yamada, Takuma Suda, Yutaka Komiya, Wako Aoki, Masayuki Y. Fujimoto
- arXiv.org - Astrophysics - Volume: 2013, Issue: 20 Sep
- arXiv:1309.3430 [pdf, ps, other]
A spectroscopic survey of Andromeda’s Western Shelf
- Virtual Journal - Volume 10, Issue 27 - article #30
- Mark A. Fardal, Puragra Guhathakurta, Karoline M. Gilbert, Erik J. Tollerud, Jason S. Kalirai, Mikito Tanaka, Rachael Beaton, Masashi Chiba, Yutaka Komiyama and Masanori Iye
- Monthly Notices of the Royal Astronomical Society - Volume: 423, Issue: 4
- Abstract Full Article (HTML)PDF(1473K)References Request Permissions
Extremely Metal-Poor Stars and a Hierarchical Chemical Evolution Model
- Virtual Journal - Volume 9, Issue 19 - article #6
- Yutaka Komiya
- arXiv.org - Astrophysics - Volume: 2011, Issue: 13 May
- arXiv:1105.2099 [pdf, ps, other]
The Stellar Abundances for Galactic Archaeology (SAGA) data base – II. Implications for mixing and nucleosynthesis in extremely metal-poor stars and chemical enrichment of the Galaxy
- Virtual Journal - Volume 9, Issue 11 - article #24
- Takuma Suda, Shimako Yamada, Yutaka Katsuta, Yutaka Komiya, Chikako Ishizuka, Wako Aoki and Masayuki Y. Fujimoto
- Monthly Notices of the Royal Astronomical Society - Volume: 412, Issue: 2
- Abstract Full Article (HTML)PDF(4067K)References
Structure and Population of the Andromeda Stellar Halo from a Subaru/Suprime-Cam Survey
- Virtual Journal - Volume 7, Issue 52 - article #26
- <em >Mikito Tanaka, Masashi Chiba, Yutaka Komiyama, Puragra Guhathakurta, Jason S. Kalirai, and Masanori Iye</em&gt,
- The Astrophysical Journal - Volume: 708, Issue: 2
- Abstract | References
Hierarchical Formation of the Galactic Halo and the Origin of Hyper Metal-Poor Stars
- Virtual Journal - Volume 7, Issue 16 - article #17
- <em >Yutaka Komiya, Asao Habe, Takuma Suda, and Masayuki Y. Fujimoto</em&gt,
- The Astrophysical Journal Letters - Volume: 696, Issue: 1
- Abstract | References
Early-Age Evolution of the Milky Way Related by Extremely Metal-Poor Stars
- Virtual Journal - Volume 7, Issue 13 - article #29
- <em >Yutaka Komiya, Takuma Suda, and Masayuki Y. Fujimoto</em&gt,
- The Astrophysical Journal - Volume: 694, Issue: 2
- Abstract | References
Early-Age Evolution of the Milky Way Related by Extremely Metal-Poor Stars
- Virtual Journal - Volume 7, Issue 2 - article #1
- Yutaka Komiya, Takuma Suda, Masayuki Y. Fujimoto
- arXiv.org - Astrophysics - Volume: 2009, Issue: 8 Jan
- arXiv:0901.0617 [ps, pdf, other]
Proper motions with Subaru I. Methods and a first sample in the Subaru Deep Field
- Virtual Journal - Volume 6, Issue 38 - article #11
- Michael W. Richmond, Tomoki Morokuma, Mamoru Doi, Yutaka Komiyama, Naoki Yasuda, Sadanori Okamura, Avishay Gal-Yam
- arXiv.org - Astrophysics - Volume: 2008, Issue: 18 Sep
- arXiv:0809.2692 [ps, pdf, other]
The Stellar Abundances for Galactic Archeology (SAGA) Database - Compilation of the Characteristics of Known Extremely Metal-Poor Stars
- Virtual Journal - Volume 6, Issue 26 - article #12
- Takuma Suda (1), Yutaka Katsuta (1), Shimako Yamada (1), Tamon Suwa (2), Chikako Ishizuka (1), Yutaka Komiya (3), Kazuo Sorai (1), Masayuki Aikawa (1), Masayuki Y. Fujimoto (1) ((1) Hokkaido Univ., (2) Tsukuba Univ., (3) Tohoku Univ.)
- arXiv.org - Astrophysics - Volume: 2008, Issue: 26 Jun
- arXiv:0806.3697 [ps, pdf, other]
The IMF of Extremely Metal-Poor Stars and the Probe into the Star-Formation Process of the Milky Way
- Virtual Journal - Volume 5, Issue 43 - article #33
- Yutaka Komiya, Takuma Suda, Asao Habe, Masayuki Y. Fujimoto
- arXiv.org - Astrophysics - Volume: 2007, Issue: 25 Oct
- arXiv:0710.4374 [ps, pdf, other]
The Origin of Carbon Enhancement and the Initial Mass Function of Extremely Metal-poor Stars in the Galactic Halo
- Virtual Journal - Volume 5, Issue 12 - article #4
- Yutaka Komiya, Takuma Suda, Hiroki Minaguchi, Toshikazu Shigeyama, Wako Aoki, and Masayuki Y. Fujimoto
- The Astrophysical Journal - Volume658, Issue 1
- ABSTRACT, FULL TEXT WITH ENHANCEMENTS, PDF (622 kB), PS
The Origin of Carbon Enhancement and the Initial Mass Function of Extremely Metal-poor Stars in the Galactic Halo
- Virtual Journal - Volume 5, Issue 11 - article #5
- Yutaka Komiya, Takuma Suda, Hiroki Minaguchi, Toshikazu Shigeyama, Wako Aoki, and Masayuki Y. Fujimoto
- The Astrophysical Journal - Volume658, Issue 1
- ABSTRACT, FULL TEXT WITH ENHANCEMENTS, PDF (622 kB), PS
The Origin of Carbon-Enhancement and Initial Mass Function of Extremely Metal-Poor Stars in the Galactic Halo
- Virtual Journal - Volume 4, Issue 43 - article #9
- Yutaka Komiya, Takuma Suda, Hiroki Minaguchi, Toshikazu Shigeyama, Wako Aoki, Masayuki Y. Fujimoto
- ArXiv - Astrophysics
- astro-ph/0610670 [abs, ps, pdf, other]

Results 1 - 30 of 30

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