Zobrazeno 1 - 10
of 817
pro vyhledávání: '"Komiyama, Yutaka"'
Autor:
Ogami, Itsuki, Komiyama, Yutaka, Chiba, Masashi, Tanaka, Mikito, Guhathakurta, Puragra, Kirby, Evan N., Wyse, Rosemary F. G., Filion, Carrie, Kirihara, Takanobu, Ishigaki, Miho N., Hayashi, Kohei
We report the detection of a dwarf satellite candidate (Triangulum IV: Tri IV) of the Triangulum galaxy (M33) using the deep imaging of Subaru/Hyper Suprime-Cam (HSC). From the apparent magnitude of the horizontal branch in Tri IV, the heliocentric d
Externí odkaz:
http://arxiv.org/abs/2407.07481
Autor:
Fukushima, Tetsuya, Chiba, Masashi, Tanaka, Mikito, Hayashi, Kohei, Homma, Daisuke, Okamoto, Sakurako, Komiyama, Yutaka, Tanaka, Masayuki, Arimoto, Nobuo, Matsuno, Tadafumi
We select blue-horizontal branch stars (BHBs) from the internal data release of the Hyper Suprime-Cam Subaru Strategic Program to reveal the global structure of the Milky Way (MW) stellar halo. The data are distributed over $\sim 1,100$~deg$^2$ area
Externí odkaz:
http://arxiv.org/abs/2406.11923
Autor:
Okamoto, Sakurako, Ferguson, Annette M. N., Arimoto, Nobuo, Ogami, Itsuki, Zemaitis, Rokas, Chiba, Masashi, Irwin, Mike J., Jang, In Sung, Koda, Jin, Komiyama, Yutaka, Lee, Myung Gyoon, Lee, Jeong Hwan, Rich, Michael, Tanaka, Masayuki, Tanaka, Mikito
We present the discovery of NGC253-SNFC-dw1, a new satellite galaxy in the remote stellar halo of the Sculptor Group spiral, NGC 253. The system was revealed using deep resolved star photometry obtained as part of the Subaru Near-Field Cosmology Surv
Externí odkaz:
http://arxiv.org/abs/2403.16011
Autor:
Ogami, Itsuki, Komiyama, Yutaka, Chiba, Masashi, Tanaka, Mikito, Guhathakurta, Puragra, Kirby, Evan N., Wyse, Rosemary F. G., Filion, Carrie, Kirihara, Takanobu, Ishigaki, Miho N., Hayashi, Kohei
We analyze the outer regions of M33, beyond 15 kpc in projected distance from its center using Subaru/HSC multi-color imaging. We identify Red Giant Branch (RGB) stars and Red Clump (RC) stars using the surface gravity sensitive $NB515$ filter for th
Externí odkaz:
http://arxiv.org/abs/2403.14234
Autor:
Ogami, Itsuki, Tanaka, Mikito, Komiyama, Yutaka, Chiba, Masashi, Guhathakurta, Puragra, Kirby, Evan N., Wyse, Rosemary F. G., Filion, Carrie, Gilbert, Karoline M., Escala, Ivanna, Mori, Masao, Kirihara, Takanobu, Tanaka, Masayuki, Ishigaki, Miho N., Hayashi, Kohei, Lee, Myun Gyoon, Sharma, Sanjib, Kalirai, Jason S., Lupton, Robert H.
We analyse the M31 halo and its substructure within a projected radius of 120 kpc using a combination of Subaru/HSC NB515 and CFHT/MegaCam g- & i-bands. We succeed in separating M31's halo stars from foreground contamination with $\sim$ 90 \% accurac
Externí odkaz:
http://arxiv.org/abs/2401.00668
Autor:
Suzuki, Yoshihisa, Chiba, Masashi, Komiyama, Yutaka, Hayashi, Kohei, Tanaka, Masayuki, Fukushima, Tetsuya, Carlsten, Scott G., Tokiwa, Akira, Qiu, Tian, Takada, Masahiro
We analyze the photometric data in the Wide layer of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) over $\sim 1,200$ deg$^{2}$ to uncover new halo substructures beyond the distance, $D_{\odot}\sim$ 30 kpc, from the Sun. For this purpose, w
Externí odkaz:
http://arxiv.org/abs/2311.17378
Autor:
Homma, Daisuke, Chiba, Masashi, Komiyama, Yutaka, Tanaka, Masayuki, Okamoto, Sakurako, Tanaka, Mikito, Ishigaki, Miho N., Hayashi, Kohei, Arimoto, Nobuo, Lupton, Robert H., Strauss, Michael A., Miyazaki, Satoshi, Wang, Shiang-Yu, Murayama, Hitoshi
We present the final results of our search for new Milky Way (MW) satellites using the data from the Hyper Suprime-Cam (HSC) Subaru Strategic Program (SSP) survey over $\sim 1,140$ deg$^2$. In addition to three candidates that we already reported, we
Externí odkaz:
http://arxiv.org/abs/2311.05439
Autor:
Kawanomoto, Satoshi, Koike, Michitaro, Bradfield, Fraser, Fujii, Toshihiro, Komiyama, Yutaka, Miyazaki, Satoshi, Morokuma, Tomoki, Murayama, Hitoshi, Oguri, Masamune, Terai, Tsuyoshi
Publikováno v:
Scientific Reports 13, 16091 (2023)
Extensive air showers induced from high-energy cosmic rays provide a window into understanding the most energetic phenomena in the universe. We present a new method for observing these showers using the silicon imaging detector Subaru Hyper Suprime-C
Externí odkaz:
http://arxiv.org/abs/2310.07963
This is the first in a series of papers on the properties of ultra-diffuse galaxies (UDGs) in clusters of galaxies. We present an updated catalog of UDGs in the Coma cluster using \textit{g}- and \textit{r}-band images obtained with Hyper Suprime-Cam
Externí odkaz:
http://arxiv.org/abs/2307.07141
Autor:
Matsuoka, Yoshiki, Onoue, Masafusa, Iwasawa, Kazushi, Strauss, Michael A., Kashikawa, Nobunari, Izumi, Takuma, Nagao, Tohru, Imanishi, Masatoshi, Akiyama, Masayuki, Silverman, John D., Asami, Naoko, Bosch, James, Furusawa, Hisanori, Goto, Tomotsugu, Gunn, James E., Harikane, Yuichi, Ikeda, Hiroyuki, Inayoshi, Kohei, Ishimoto, Rikako, Kawaguchi, Toshihiro, Kikuta, Satoshi, Kohno, Kotaro, Komiyama, Yutaka, Lee, Chien-Hsiu, Lupton, Robert H., Minezaki, Takeo, Miyazaki, Satoshi, Murayama, Hitoshi, Nishizawa, Atsushi J., Oguri, Masamune, Ono, Yoshiaki, Oogi, Taira, Ouchi, Masami, Price, Paul A., Sameshima, Hiroaki, Sugiyama, Naoshi, Tait, Philip J., Takada, Masahiro, Takahashi, Ayumi, Takata, Tadafumi, Tanaka, Masayuki, Toba, Yoshiki, Wang, Shiang-Yu, Yamashita, Takuji
We present the quasar luminosity function (LF) at $z = 7$, measured with 35 spectroscopically confirmed quasars at $6.55 < z < 7.15$. The sample of 22 quasars from the Subaru High-$z$ Exploration of Low-Luminosity Quasars (SHELLQs) project, combined
Externí odkaz:
http://arxiv.org/abs/2305.11225