Zobrazeno 1 - 10
of 268
pro vyhledávání: '"Nakajima, Kimihiko"'
Autor:
Harikane, Yuichi, Inoue, Akio K., Ellis, Richard S., Ouchi, Masami, Nakazato, Yurina, Yoshida, Naoki, Ono, Yoshiaki, Sun, Fengwu, Sato, Riku A., Fujimoto, Seiji, Kashikawa, Nobunari, McLeod, Derek J., Perez-Gonzalez, Pablo G., Sawicki, Marcin, Sugahara, Yuma, Xu, Yi, Yamanaka, Satoshi, Carnall, Adam C., Cullen, Fergus, Dunlop, James S., Egami, Eiichi, Grogin, Norman, Isobe, Yuki, Koekemoer, Anton M., Laporte, Nicolas, Lee, Chien-Hsiu, Magee, Dan, Matsuo, Hiroshi, Matsuoka, Yoshiki, Mawatari, Ken, Nakajima, Kimihiko, Nakane, Minami, Tamura, Yoichi, Umeda, Hiroya, Yanagisawa, Hiroto
We present the number densities and physical properties of the bright galaxies spectroscopically confirmed at $z\sim7-14$. Our sample is composed of 53 galaxies at $z_\mathrm{spec}\sim7-14$, including recently-confirmed galaxies at $z_\mathrm{spec}=1
Externí odkaz:
http://arxiv.org/abs/2406.18352
Autor:
Yanagisawa, Hiroto, Ouchi, Masami, Watanabe, Kuria, Matsumoto, Akinori, Nakajima, Kimihiko, Yajima, Hidenobu, Nagamine, Kentaro, Takahashi, Koh, Nakane, Minami, Tominaga, Nozomu, Umeda, Hiroya, Fukushima, Hajime, Harikane, Yuichi, Isobe, Yuki, Ono, Yoshiaki, Xu, Yi, Zhang, Yechi
We present HeI/H$\beta$-flux and He/H-abundance ratios in three JWST galaxies with significant constraints on N/O-abundance ratios, GS-NDG-9422, RXCJ2248-ID, and GLASS150008 at $z\sim 6$ mostly with the spectroscopic coverage from HeI$\lambda$4471 an
Externí odkaz:
http://arxiv.org/abs/2405.01823
Autor:
Xu, Yi, Ouchi, Masami, Yajima, Hidenobu, Fukushima, Hajime, Harikane, Yuichi, Isobe, Yuki, Nakajima, Kimihiko, Nakane, Minami, Ono, Yoshiaki, Umeda, Hiroya, Yanagisawa, Hiroto, Zhang, Yechi
We investigate the dynamics of GN-z11, a luminous galaxy at $z=10.60$, carefully analyzing the public deep integral field spectroscopy (IFS) data taken with JWST NIRSpec IFU. While the observations of the IFS data originally targeted a He II clump ne
Externí odkaz:
http://arxiv.org/abs/2404.16963
Publikováno v:
2024 ApJ 968 32
We investigate the galaxy properties of $\sim$400 low-mass ($<10^9\,M_{\odot}$) H$\alpha$ emitters (HAEs) at z $\sim$ 2.3 in the ZFOURGE survey. The selection of these HAEs is based on the excess in the observed $K_s$ broad-band flux compared to the
Externí odkaz:
http://arxiv.org/abs/2404.10998
Autor:
Yanagisawa, Hiroto, Ouchi, Masami, Nakajima, Kimihiko, Yajima, Hidenobu, Umeda, Hiroya, Baba, Shunsuke, Nakagawa, Takao, Nakane, Minami, Matsumoto, Akinori, Ono, Yoshiaki, Harikane, Yuichi, Isobe, Yuki, Xu, Yi, Zhang, Yechi
We investigate the physical origins of the Balmer decrement anomalies in GS-NDG-9422 (Cameron et al. 2023) and RXCJ2248-ID (Topping et al. 2024) galaxies at $z\sim 6$ whose $\mathrm{H}\alpha/\mathrm{H}\beta$ values are significantly smaller than $2.7
Externí odkaz:
http://arxiv.org/abs/2403.20118
Autor:
Zavala, Jorge A., Castellano, Marco, Akins, Hollis B., Bakx, Tom J. L. C., Burgarella, Denis, Casey, Caitlin M., Ortiz, Óscar A. Chávez, Dickinson, Mark, Finkelstein, Steven L., Mitsuhashi, Ikki, Nakajima, Kimihiko, Pérez-González, Pablo G., Haro, Pablo Arrabal, Buat, Veronique, Backhaus, Bren, Calabrò, Antonello, Cleri, Nikko J., Fernández-Arenas, David, Fontana, Adriano, Franco, Maximilien, Giavalisco, Mauro, Grogin, Norman A., Hathi, Nimish, Hirschmann, Michaela, Ikeda, Ryota, Jung, Intae, Kartaltepe, Jeyhan S., Koekemoer, Anton M., Larson, Rebeca L., McKinney, Jed, Papovich, Casey, Saito, Toshiki, Santini, Paola, Terlevich, Roberto, Terlevich, Elena, Treu, Tommaso, Yung, L. Y. Aaron
The James Webb Space Telescope (JWST) has discovered a surprising population of bright galaxies in the very early universe (< 500 Myrs after the Big Bang) that is hard to explain with conventional galaxy formation models and whose physical properties
Externí odkaz:
http://arxiv.org/abs/2403.10491
Autor:
Nakane, Minami, Ouchi, Masami, Nakajima, Kimihiko, Harikane, Yuichi, Ono, Yoshiaki, Umeda, Hiroya, Isobe, Yuki, Zhang, Yechi, Xu, Yi
We present the evolution of Ly$\alpha$ emission derived from 53 galaxies at $z=6.6-13.2$ that are identified by multiple JWST/NIRSpec spectroscopy programs of ERS, GO, DDT, and GTO. These galaxies fall on the star-formation main sequence and are the
Externí odkaz:
http://arxiv.org/abs/2312.06804
Autor:
D'Eugenio, Francesco, Maiolino, Roberto, Carniani, Stefano, Curtis-Lake, Emma, Witstok, Joris, Chevallard, Jacopo, Charlot, Stephane, Baker, William M., Arribas, Santiago, Boyett, Kristan, Bunker, Andrew J., Curti, Mirko, Eisenstein, Daniel J., Hainline, Kevin, Ji, Zhiyuan, Johnson, Benjamin D., Looser, Tobias J., Nakajima, Kimihiko, Nelson, Erica, Rieke, Marcia, Robertson, Brant, Scholtz, Jan, Smit, Renske, Venturi, Giacomo, Tacchella, Sandro, Uebler, Hannah, Willmer, Christopher N. A., Willott, Chris
Finding the emergence of the first generation of metals in the early Universe, and identifying their origin, are some of the most important goals of modern astrophysics. We present deep JWST/NIRSpec spectroscopy of GS-z12, a galaxy at z=12.5, in whic
Externí odkaz:
http://arxiv.org/abs/2311.09908
Autor:
Xu, Yi, Ouchi, Masami, Nakajima, Kimihiko, Harikane, Yuichi, Isobe, Yuki, Ono, Yoshiaki, Umeda, Hiroya, Zhang, Yechi
We study outflows in 130 galaxies with -22
Externí odkaz:
http://arxiv.org/abs/2310.06614
Autor:
Chen, Nuo, Motohara, Kentaro, Spitler, Lee R., Nakajima, Kimihiko, Momose, Rieko, Kodama, Tadayuki, Konishi, Masahiro, Takahashi, Hidenori, Kushibiki, Kosuke, Terao, Yasunori, Kono, Yukihiro
Publikováno v:
2024 ApJ 964 5
We present a multiple emission lines study of $\sim$1300 H$\alpha$ emitters (HAEs) at $z \sim 2.3$ in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the ZFOURGE-$K_s$ broad-
Externí odkaz:
http://arxiv.org/abs/2309.14020