Zobrazeno 1 - 10
of 2 020
pro vyhledávání: '"Tanaka, Masayuki"'
Autor:
Ito, Kei, Tanaka, Takumi S., Shimasaku, Kazuhiro, Ando, Makoto, Onoue, Masafusa, Tanaka, Masayuki, Matsui, Suin, Kakimoto, Takumi, Valentino, Francesco
We report a characterization of an X-ray-detected quiescent galaxy at $z=2.09$, named COS-XQG1, using JWST/NIRCam and NIRSpec data. This galaxy is detected in Chandra imaging, suggesting the presence of an AGN with a high black hole accretion rate of
Externí odkaz:
http://arxiv.org/abs/2408.08492
Autor:
Toba, Yoshiki, Masu, Keito, Ota, Naomi, Gao, Zhen-Kai, Imanishi, Masatoshi, Yanagawa, Anri, Yamada, Satoshi, Dosaka, Itsuki, Kakimoto, Takumi, Kobayashi, Seira, Kurokawa, Neiro, Oki, Aika, Soga, Sorami, Shibata, Kohei, Takeuchi, Sayaka, Tsujita, Yukana, Nagao, Tohru, Tanaka, Masayuki, Ueda, Yoshihiro, Wang, Wei-Hao
We report the discovery of a hyperluminous type 1 quasar (eFEDS J082826.9-013911; eFEDSJ0828-0139) at $z_{\rm spec}$ = 1.622 with a super-Eddington ratio ($\lambda_{\rm Edd}$). We perform the optical spectroscopic observations with KOOLS-IFU on the S
Externí odkaz:
http://arxiv.org/abs/2408.08498
Autor:
Ratchatorn, Tanapat, Tanaka, Masayuki
Recent advancements in learning algorithms have demonstrated that the sharpness of the loss surface is an effective measure for improving the generalization gap. Building upon this concept, Sharpness-Aware Minimization (SAM) was proposed to enhance m
Externí odkaz:
http://arxiv.org/abs/2406.14329
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:
Kiyota, Tomokazu, Ando, Makoto, Tanaka, Masayuki, Finoguenov, Alexis, Ali, Sadman Shariar, Coupon, Jean, Desprez, Guillaume, Gwyn, Stephen, Sawicki, Marcin, Shimakawa, Rhythm
Galaxy clusters are crucial to understanding role of the environment in galaxy evolution. However, due to their rarity, only a limited number of clusters have been identified at $z\gtrsim2$. In this paper, we report a discovery of seven cluster candi
Externí odkaz:
http://arxiv.org/abs/2406.02849
Remote individual animal identification is important for food safety, sport, and animal conservation. Numerous existing remote individual animal identification studies have focused on RGB images. In this paper, we tackle individual penguin identifica
Externí odkaz:
http://arxiv.org/abs/2405.14146
Autor:
Liang, Yongming, Ouchi, Masami, Sun, Dongsheng, Kashikawa, Nobunari, Cai, Zheng, Cantalupo, Sebastiano, Nagamine, Kentaro, Yajima, Hidenobu, Kirihara, Takanobu, Zhang, Haibin, Li, Mingyu, Shimakawa, Rhythm, Fan, Xiaohui, Ito, Kei, Tanaka, Masayuki, Harikane, Yuichi, Prochaska, J. Xavier, Travascio, Andrea, Wang, Weichen, Elvis, Martin, Fabbiano, Giuseppina, Arita, Junya, Onoue, Masafusa, Silverman, John D., Shi, Dongdong, An, FangXia, Izumi, Takuma, Shimasaku, Kazuhiro, Uchiyama, Hisakazu, Zhu, Chenghao
We report the identification of a quasar overdensity in the BOSSJ0210 field, dubbed Cosmic Himalayas, consisting of 11 quasars at $z=2.16-2.20$, the densest overdensity of quasars ($17\sigma$) in the $\sim$10,000 deg$^2$ of the Sloan Digital Sky Surv
Externí odkaz:
http://arxiv.org/abs/2404.15963
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
We present the luminosity functions and stellar mass functions of supernova (SN) host galaxies and test if they differ from the functions of normal field galaxies. We utilize homogeneous samples consisting of 273 SNe Ia ($z\leq0.3$) and 44 core-colla
Externí odkaz:
http://arxiv.org/abs/2401.14603
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