Search Publications
Suzaku Observations of Iron K-Lines from the Intracluster Medium of the Coma Cluster
Sarazin, Craig L.; Sato, Kosuke; Nakazawa, Kazuhiro +3 more
The Coma cluster was observed with the X-ray Imaging Spectrometer (XIS) onboard Suzaku in six pointings, including the central X-ray peak region, 14
The First MAXI/GSC Catalog in the High Galactic-Latitude Sky
Isobe, Naoki; Yamaoka, Kazutaka; Nakagawa, Yujin E. +31 more
We present the first unbiased source catalog of the Monitor of All-sky X-ray Image (MAXI) mission at high Galactic latitudes (
Spectral and Timing Studies of Cyg X-1 in the Low/Hard State with Suzaku
Done, Chris; Gandhi, Poshak; Makishima, Kazuo +6 more
From 2005 to 2009, 25 observations of Cyg X-1 were performed with Suzaku, achieving a total exposure of 446 ks. In all observations, the source was found in the low/hard state, while the 1.5-12.0 keV count rate of the All-Sky Monitor onboard RXTE varied by a factor of
Diffraction-Limited Subaru Imaging of M82: Sharp Mid-Infrared View of the Starburst Core
Isobe, Naoki; Gandhi, Poshak; Sakon, Itsuki +4 more
We present new imaging at 12.81 and 11.7 µm of the central ∼ 40''× 30'' (∼ 0.7 kpc × 0.5 kpc) of the starburst galaxy M 82. The observations were carried out with the COMICS mid-infrared (mid-IR) imager on the 8.2 m Subaru Telescope, and are diffraction-limited at an angular resolution of <0''.4. The images show extensive diffuse structur…
MOIRCS Deep Survey. X. Evolution of Quiescent Galaxies as a Function of Stellar Mass at 0.5 < z < 2.5
Tanaka, Ichi; Yamada, Toru; Kajisawa, Masaru +4 more
We studied the evolution of quiescent galaxies at 0.5 < z < 2.5 as a function of the stellar mass, using very deep NIR imaging data from the MOIRCS Deep Survey in the GOODS-North region. The deep NIR data allowed us to construct a stellar mass-limited sample of quiescent galaxies down to ∼1010Modot, even at z ∼ 2, for t…
Widely Extended [O III] 88µm Line Emission around the 30 Doradus Region Revealed with AKARI FIS-FTS
Kaneda, Hidehiro; Takahashi, Hidenori; Murakami, Noriko +7 more
We present a distribution map of the far-infrared [O II] 88 µm line emission around the 30 Doradus (30 Dor) region in the Large Magellanic Cloud obtained with the Fourier Transform Spectrometer of the Far-Infrared Surveyor on board AKARI. The map reveals that the [O III] emission is widely distributed by more than 10' around the super star c…
High-Resolution Optical and Near-Infrared Images of the FS Tauri Circumbinary Disk
Hayashi, Masahiko; Fukagawa, Misato; Itoh, Yoichi +2 more
We present an H-band image of FS Tauri, a 0.''2-separated classical T Tauri binary system, taken with the Coronagraphic Imager with Adaptive Optics (CIAO) on the Subaru Telescope. This new image, combined with Hubble Space Telescope/Advanced Camera for Surveys (HST/ACS) F606W-band polarimetric images, shows that the binary has complicated circumbi…
Suzaku and XMM-Newton Observations of the Fornax Cluster: Temperature and Metallicity Distribution
Sato, Kosuke; Nakazawa, Kazuhiro; Ohashi, Takaya +7 more
Suzaku observed a central region and five offset regions within 0.2
Suzaku Detection of Diffuse Hard X-Ray Emission outside Vela X
Temim, Tea; Katsuda, Satoru; Petre, Robert +9 more
Vela X is a large, 3
Cryogenic Volume-Phase Holographic Grisms for MOIRCS
Shimasaku, Kazuhiro; Tanaka, Ichi; Yamada, Toru +12 more
We have developed high-dispersion VPH (volume phase holographic) grisms with zinc selenide (ZnSe) prisms for the cryogenic optical system of MOIRCS (Multi-Object near-InfraRed Camera and Spectrograph) for Y-, J-, H-, and K-band observations. We fabricated VPH gratings using a hologram resin. After several heat cycles at between room temperature an…