Zobrazeno 1 - 10
of 146
pro vyhledávání: '"Takatoshi Shibuya"'
Autor:
Alexander Navarre, Gourav Khullar, Matthew B. Bayliss, Håkon Dahle, Michael Florian, Michael Gladders, Keunho J. Kim, M. Riley Owens, Jane Rigby, Joshua Roberson, Keren Sharon, Takatoshi Shibuya, Ryan Walker
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 2, p 175 (2024)
We present six strongly gravitationally lensed Ly α emitters (LAEs) at z ∼ 4–5 with Hubble Space Telescope (HST) narrowband imaging isolating Ly α . Through complex radiative transfer Ly α encodes information about the spatial distribution and
Externí odkaz:
https://doaj.org/article/3fe23ea3ecf047edbb600f13cd771d6f
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:
Satoshi Kikuta, Masami Ouchi, Takatoshi Shibuya, Yongming Liang, Hiroya Umeda, Akinori Matsumoto, Kazuhiro Shimasaku, Yuichi Harikane, Yoshiaki Ono, Akio K. Inoue, Satoshi Yamanaka, Haruka Kusakabe, Rieko Momose, Nobunari Kashikawa, Yuichi Matsuda, Chien-Hsiu Lee
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 268, Iss 1, p 24 (2023)
We present 20,567 Ly α emitters (LAEs) at z = 2.2 − 7.3 that are photometrically identified by the SILVERRUSH program in a large survey area up to 25 deg ^2 with deep images of five broadband filters ( grizy ) and seven narrowband filters targetin
Externí odkaz:
https://doaj.org/article/a1ae859b35a748c3bf6316bcd0a50cf9
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:
Yoshiaki Ono, Yuichi Harikane, Masami Ouchi, Hidenobu Yajima, Makito Abe, Yuki Isobe, Takatoshi Shibuya, John H. Wise, Yechi Zhang, Kimihiko Nakajima, Hiroya Umeda
Publikováno v:
The Astrophysical Journal, Vol 951, Iss 1, p 72 (2023)
We present morphologies of galaxies at z ≳ 9 resolved by JWST/NIRCam 2–5 μ m imaging. Our sample consists of 22 galaxy candidates identified by stringent dropout and photo- z criteria in GLASS, CEERS, SMACS J0723, and Stephan’s Quintet flankin
Externí odkaz:
https://doaj.org/article/bdb5cd9158be4bafa5b746176b3808a2
Autor:
Yi W. Ren, Yoshinobu Fudamoto, Akio K. Inoue, Yuma Sugahara, Tsuyoshi Tokuoka, Yoichi Tamura, Hiroshi Matsuo, Kotaro Kohno, Hideki Umehata, Takuya Hashimoto, Rychard J. Bouwens, Renske Smit, Nobunari Kashikawa, Takashi Okamoto, Takatoshi Shibuya, Ikkoh Shimizu
Publikováno v:
The Astrophysical Journal, Vol 945, Iss 1, p 69 (2023)
We present updated measurements of the [O iii ] 88 μ m, [C ii ] 158 μ m, and dust continuum emission from a star-forming galaxy at z = 7.212, SXDF-NB1006-2, by utilizing Atacama Large Millimeter/submillimeter Array (ALMA) archival data sets analyse
Externí odkaz:
https://doaj.org/article/c8f53f516551471c9c9b39e900a31a47
Autor:
Takatoshi Shibuya, Noriaki Miura, Kenji Iwadate, Seiji Fujimoto, Yuichi Harikane, Yoshiki Toba, Takuya Umayahara, Yohito Ito
Publikováno v:
Publications of the Astronomical Society of Japan. 74:73-91
We perform a super-resolution analysis of the Subaru Hyper Suprime-Cam (HSC) images to estimate the major merger fractions of z~4-7 dropout galaxies at the bright end of galaxy UV luminosity functions (LFs). Our super-resolution technique improves th
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:
Annual Review of Astronomy and Astrophysics. 58:617-659
Hydrogen Lyman-$\alpha$ (Ly$\alpha$) emission has been one of the major observational probes for the high redshift universe, since the first discoveries of high-$z$ Ly$\alpha$ emitting galaxies in the late 1990s. Due to the strong Ly$\alpha$ emission
Autor:
Ken Mawatari, Ikkoh Shimizu, Yoshiaki Taniguchi, Takuya Hashimoto, Erik Zackrisson, Kazuaki Ota, Takashi Okamoto, Akio K. Inoue, Hiroshi Matsuo, Kotaro Kohno, Yuichi Matsuda, H. Umehata, Takatoshi Shibuya, Naoki Yoshida, Bunyo Hatsukade, Minju Lee, Yoichi Tamura, T. Bakx
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 493(3):4294-4307
We report on the detection of the [CII] 157.7 $\mu$m emission from the Lyman break galaxy (LBG) MACS0416_Y1 at z = 8.3113, by using the Atacama Large Millimeter/submillimeter Array (ALMA). The luminosity ratio of [OIII] 88 $\mu$m (from previous campa