Zobrazeno 1 - 10
of 1 063
pro vyhledávání: '"Nakagawa, Takao"'
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:
Lai, Thomas S. -Y., Smith, J. D. T., Peeters, Els, Spoon, Henrik W. W., Baba, Shunsuke, Imanishi, Masatoshi, Nakagawa, Takao
We introduce a novel model to spectroscopically constrain the mid-infrared (MIR) extinction/attenuation curve from 3--17 um, using Polycyclic Aromatic Hydrocarbon (PAH) emission drawn from an AKARI-Spitzer extragalactic cross-archival dataset. Curren
Externí odkaz:
http://arxiv.org/abs/2403.01763
Autor:
Matsumoto, Kosei, Camps, Peter, Baes, Maarten, De Ceuster, Frederik, Wada, Keiichi, Nakagawa, Takao, Nagamine, Kentaro
Publikováno v:
A&A 678, A175 (2023)
We introduce Monte Carlo-based non-LTE line radiative transfer calculations in the 3D dust radiative transfer code SKIRT, which was originally set up as a dust radiative transfer code. By doing so, we develop a generic and powerful 3D radiative trans
Externí odkaz:
http://arxiv.org/abs/2309.02628
Autor:
Isobe, Naoki, Nagai, Hiroshi, Kino, Motoki, Baba, Shunsuke, Nakagawa, Takao, Sunada, Yuji, Tashiro, Makoto
In order to investigate the far-infrared excess detected from the west hot spot of the radio galaxy Pictor A with the Herschel observatory, a submillimeter photometry is performed with the Atacama Compact Array (ACA) of the Atacama Large Millimeter/s
Externí odkaz:
http://arxiv.org/abs/2306.14950
Autor:
Ohyama, Youichi, Onishi, Shusuke, Nakagawa, Takao, Matsumoto, Kosei, Isobe, Naoki, Shirahata, Mai, Baba, Shunsuke, Sakamoto, Kazushi
We investigated the inner buried nucleus of a nearby luminous infrared galaxy NGC 4418 using high-resolution spectroscopy of fundamental carbon monoxide (CO) ro-vibrational absorptions around $4.67 \mu$m for the first time. This method allowed us to
Externí odkaz:
http://arxiv.org/abs/2305.09959
Autor:
Uyama, Taichi, Beichman, Charles, Kuzuhara, Masayuki, Janson, Markus, Kotani, Takayuki, Mawet, Dimitri, Sato, Bun'ei, Tamura, Motohide, Ishikawa, Hiroyuki Tako, Cale, Bryson, Currie, Thayne, Harakawa, Hiroki, Henning, Thomas, Hirano, Teruyuki, Hodapp, Klaus, Hori, Yasunori, Ishizuka, Masato, Jacobson, Shane, Kasagi, Yui, Kokubo, Eiichiro, Konishi, Mihoko, Kudo, Tomoyuki, Kurokawa, Takashi, Kusakabe, Nobuhiko, Kwon, Jungmi, Machida, Masahiro, Nakagawa, Takao, Narita, Norio, Nishikawa, Jun, Ogihara, Masahiro, Omiya, Masashi, Serizawa, Takuma, Ueda, Akitoshi, Vievard, Sebastien, Wang, Ji
The Subaru telescope is currently performing a strategic program (SSP) using the high-precision near-infrared (NIR) spectrometer IRD to search for exoplanets around nearby mid/late-M~dwarfs via radial velocity (RV) monitoring. As part of the observin
Externí odkaz:
http://arxiv.org/abs/2302.13354
Autor:
Shim, Hyunjin, Hwang, Ho Seong, Jeong, Woong-Seob, Toba, Yoshiki, Kim, Minjin, Kim, Dohyeong, Song, Hyunmi, Hashimoto, Tetsuya, Nakagawa, Takao, Nanni, Ambra, Pearson, William J., Takagi, Toshinobu
We investigate the variation in the mid-infrared spectral energy distributions of 373 low-redshift ($z<0.4$) star-forming galaxies, which reflects a variety of polycyclic aromatic hydrocarbon (PAH) emission features. The relative strength of PAH emis
Externí odkaz:
http://arxiv.org/abs/2212.04635
Autor:
Itoh, Satoshi, Ishihara, Daisuke, Wada, Takehiko, Nakagawa, Takao, Oyabu, Shinki, Kaneda, Hidehiro, Hirahara, Yasuhiro, consortium, the SMI
We performed wave-optics-based numerical simulations at mid-infrared wavelengths to investigate how the presence or absence of entrance slits and optical aberrations affect the spectral resolving power $R$ of a compact, high-spectral-resolving-power
Externí odkaz:
http://arxiv.org/abs/2206.02379
Probing dynamics and thermal properties inside molecular tori with CO rovibrational absorption lines
Autor:
Matsumoto, Kosei, Nakagawa, Takao, Wada, Keiichi, Baba, Shunsuke, Onishi, Shusuke, Uzuo, Taisei, Isobe, Naoki, Kudoh, Yuki
A recent hydrodynamic model, "radiation-driven fountain model" (Wada et al. 2016), presented a dynamical picture that active galactic nuclei (AGNs) tori sustain their geometrical thickness by gas circulation around AGNs, and previous papers confirmed
Externí odkaz:
http://arxiv.org/abs/2206.00688
Autor:
Harakawa, Hiroki, Takarada, Takuya, Kasagi, Yui, Hirano, Teruyuki, Kotani, Takayuki, Kuzuhara, Masayuki, Omiya, Masashi, Kawahara, Hajime, Fukui, Akihiko, Hori, Yasunori, Ishikawa, Hiroyuki Tako, Ogihara, Masahiro, Livingston, John, Brandt, Timothy D., Currie, Thayne, Aoki, Wako, Beichman, Charles A., Henning, Thomas, Hodapp, Klaus, Ishizuka, Masato, Izumiura, Hideyuki, Jacobson, Shane, Janson, Markus, Kambe, Eiji, Kodama, Takanori, Kokubo, Eiichiro, Konishi, Mihoko, Krishnamurthy, Vigneshwaran, Kudo, Tomoyuki, Kurokawa, Takashi, Kusakabe, Nobuhiko, Kwon, Jungmi, Matsumoto, Yuji, McElwain, Michael W., Mitsui, Koyu, Nakagawa, Takao, Narita, Norio, Nishikawa, Jun, Nugroho, Stevanus K., Serabyn, Eugene, Serizawa, Takuma, Takahashi, Aoi, Ueda, Akitoshi, Uyama, Taichi, Vievard, Sébastien, Wang, Ji, Wisniewski, John, Tamura, Motohide, Sato, Bun'ei
We report the near-infrared radial-velocity (RV) discovery of a super-Earth planet on a 10.77-day orbit around the M4.5 dwarf Ross 508 ($J_\mathrm{mag}=9.1$). Using precision RVs from the Subaru Telescope IRD (InfraRed Doppler) instrument, we derive
Externí odkaz:
http://arxiv.org/abs/2205.11986