Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Shinobu Ozaki"'
Autor:
Yi Xu, Masami Ouchi, Yuki Isobe, Kimihiko Nakajima, Shinobu Ozaki, Nicolas F. Bouché, John H. Wise, Eric Emsellem, Haruka Kusakabe, Takashi Hattori, Tohru Nagao, Gen Chiaki, Hajime Fukushima, Yuichi Harikane, Kohei Hayashi, Yutaka Hirai, Ji Hoon Kim, Michael V. Maseda, Kentaro Nagamine, Takatoshi Shibuya, Yuma Sugahara, Hidenobu Yajima, Shohei Aoyama, Seiji Fujimoto, Keita Fukushima, Shun Hatano, Akio K. Inoue, Tsuyoshi Ishigaki, Masahiro Kawasaki, Takashi Kojima, Yutaka Komiyama, Shuhei Koyama, Yusei Koyama, Chien-Hsiu Lee, Akinori Matsumoto, Ken Mawatari, Takashi J. Moriya, Kentaro Motohara, Kai Murai, Moka Nishigaki, Masato Onodera, Yoshiaki Ono, Michael Rauch, Tomoki Saito, Rin Sasaki, Akihiro Suzuki, Tsutomu T. Takeuchi, Hiroya Umeda, Masayuki Umemura, Kuria Watanabe, Kiyoto Yabe, Yechi Zhang
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 49 (2024)
We present the demography of the dynamics and gas mass fraction of 33 extremely metal-poor galaxies (EMPGs) with metallicities of 0.015–0.195 Z _⊙ and low stellar masses of 10 ^4 –10 ^8 M _⊙ in the local universe. We conduct deep optical inte
Externí odkaz:
https://doaj.org/article/676be6f7cd2249aeae362e439f3fe5f9
Autor:
Yuki Isobe, Masami Ouchi, Kimihiko Nakajima, Shinobu Ozaki, Nicolas F. Bouché, John H. Wise, Yi Xu, Eric Emsellem, Haruka Kusakabe, Takashi Hattori, Tohru Nagao, Gen Chiaki, Hajime Fukushima, Yuichi Harikane, Kohei Hayashi, Yutaka Hirai, Ji Hoon Kim, Michael V. Maseda, Kentaro Nagamine, Takatoshi Shibuya, Yuma Sugahara, Hidenobu Yajima, Shohei Aoyama, Seiji Fujimoto, Keita Fukushima, Shun Hatano, Akio K. Inoue, Tsuyoshi Ishigaki, Masahiro Kawasaki, Takashi Kojima, Yutaka Komiyama, Shuhei Koyama, Yusei Koyama, Chien-Hsiu Lee, Akinori Matsumoto, Ken Mawatari, Takashi J. Moriya, Kentaro Motohara, Kai Murai, Moka Nishigaki, Masato Onodera, Yoshiaki Ono, Michael Rauch, Tomoki Saito, Rin Sasaki, Akihiro Suzuki, Tsutomu T. Takeuchi, Hiroya Umeda, Masayuki Umemura, Kuria Watanabe, Kiyoto Yabe, Yechi Zhang
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 2, p 102 (2023)
We present kinematics of six local extremely metal-poor galaxies (EMPGs) with low metallicities (0.016–0.098 Z _⊙ ) and low stellar masses (10 ^4.7 –10 ^7.6 M _⊙ ). Taking deep medium/high-resolution ( R ∼ 7500) integral-field spectra with
Externí odkaz:
https://doaj.org/article/ecaf49e39cde4e3b8fd3e73fb1e4c8c2
Autor:
Kosuke Kushibiki, Shinobu Ozaki, Masahiro Takeda, Takuya Hosobata, Yutaka Yamagata, Shinya Morita, Keiichi Nakagawa, Takao Saiki, Yutaka Ohtake, Toshihiro Tsuzuki, Kenji Mitsui, Hirofumi Okita, Kentaro Motohara, Hidenori Takahashi, Masahiro Konishi, Natsuko M. Kato, Shuhei Koyama, Nuo Chen, Shogo Homan, Akino Yasuda
Publikováno v:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V.
Autor:
Charles C. Steidel, Eric W. Peng, Jason R. Fucik, Reston Nash, Stephen Kaye, George H. Jacoby, Bernard Delabre, Ramya Sethuram, Devika Divakar, Hari Mohan Varshney, Thirupathi Sivarani, Fumihiro Uraguchi, Shinobu Ozaki, Hangxin Ji, Tao LV, Kent Chiu, Qinfeng Zhu, David Andersen, John Miles, Davide Lasi
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy IX.
Autor:
Chihiro Tokoku, Shinobu Ozaki, Takashi Moriya, Kenshi Yanagisawa, Kentaro Motohara, Masami Ouchi, Nozomu Tominaga, Masaomi Tanaka, Yoshito Ono, Yosuke Minowa, Yutaka Hayano, Yusei Koyama, Sadman Ali, Masayuki Tanaka, Masayuki Akiyama, Tohru Nagao, Yoshiki Matsuoka, Kosuke Kushibiki, Shogo Homan, Akino Yasuda, Michitoshi Yoshida
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy IX.
Autor:
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
Publikováno v:
Matsumoto, A, Ouchi, M, Nakajima, K, Kawasaki, M, Murai, K, Motohara, K, Harikane, Y, Ono, Y, Kushibiki, K, Koyama, S, Aoyama, S, Konishi, M, Takahashi, H, Isobe, Y, Umeda, H, Sugahara, Y, Onodera, M, Nagamine, K, Kusakabe, H, Hirai, Y, Moriya, T J, Shibuya, T, Komiyama, Y, Fukushima, K, Fujimoto, S, Hattori, T, Hayashi, K, Inoue, A K, Kikuchihara, S, Kojima, T, Koyama, Y, Lee, C H, Mawatari, K, Miyata, T, Nagao, T, Ozaki, S, Rauch, M, Saito, T, Suzuki, A, Takeuchi, T T, Umemura, M, Xu, Y, Yabe, K, Zhang, Y & Yoshii, Y 2022, ' 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 ', Astrophysical Journal, vol. 941, no. 2, 167 . https://doi.org/10.3847/1538-4357/ac9ea1
The primordial He abundance $Y_\mathrm{P}$ is a powerful probe of cosmology. Currently, $Y_\mathrm{P}$ is best determined by observations of metal-poor galaxies, while there are only a few known local extremely metal-poor ($
Comment: 22 pages, 9
Comment: 22 pages, 9
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88e261c0ef080063285ea705fcd335de
http://arxiv.org/abs/2203.09617
http://arxiv.org/abs/2203.09617
Publikováno v:
Monthly Notices of the Royal Astronomical Society: Letters. 493:L33-L38
We present new observations of two $z$ = 0.12 strong-lensing elliptical galaxies, originally discovered from the SDSS-IV MaNGA survey, using the new FOCAS IFU spectrograph on the Subaru Telescope. For J1436+4943, our observations confirm the identifi
Autor:
Takayuki Okamoto, Takashi Hattori, Noboru Ebizuka, Takuya Hosobata, Yutaka Yamagata, Shinobu Ozaki, Masahiro Takeda, Minoru Sasaki, Ichi Tanaka, W. Aoki
Publikováno v:
CEAS Space Journal. 12:3-14
The choice of transmission grating can facilitate downsizing of a spectrograph and make it possible to achieve a perfect Littrow configuration. We are developing transmission gratings for next-generation instruments for the 8.2 m Subaru Telescope, th
Autor:
Masami Ouchi, Yoshiaki Ono, Yuki Isobe, Seiji Fujimoto, Takashi Kojima, Yuri Kashiwagi, Shinobu Ozaki, Akio K. Inoue, Kimihiko Nakajima
Publikováno v:
Kashiwagi, Y, Inoue, A K, Isobe, Y, Nakajima, K, Ouchi, M, Ozaki, S, Fujimoto, S, Ono, Y & Kojima, T 2021, ' Subaru/FOCAS IFU revealed the metallicity gradient of a local extremely metal-poor galaxy ', Publications of the Astronomical Society of Japan, vol. 73, no. 6, pp. 1631-1637 . https://doi.org/10.1093/pasj/psab100
We present the first measurement of the metallicity gradient in extremely metal-poor galaxies (EMPGs). With Subaru/Faint Object Camera And Spectrograph (FOCAS) Integral Field Unit (IFU), we have observed a nearby, low-mass EMPG, HSC J1631+4426, whose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74133cf91a9c4da847776706305aa613
https://curis.ku.dk/ws/files/289234321/psab100.pdf
https://curis.ku.dk/ws/files/289234321/psab100.pdf
Autor:
Nobunari Kashikawa, Katsuya Okoshi, Toru Misawa, Yosuke Minowa, Daichi Kashino, Atsushi Shimono, Kazuya Matsubayashi, Hajime Sugai, Shinobu Ozaki
We find multiple Mg II absorption systems at redshift z=1.66, 2.069, and 2.097 in the spatially resolved spectra of the quadruply gravitationally lensed quasar H1413+1143 utilizing the Kyoto tridimensional spectrograph II (Kyoto 3DII) spectrograph on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7a84dc9477437ba75e3a668b2a90e13