Hirokazu Kataza

Properties of active galactic star-forming regions probed by imaging spectroscopy with the Fourier transform spectrometer (FTS) onboard AKARI (2009)

Okada, Yoko, Kawada, Mitsunobu, Murakami, Noriko, Ootsubo, Takafumi, Takahashi, Hidenori, Yasuda, Akiko, ...

We investigate the structure of the interstellar medium (ISM) and identify the location of possible embedded excitation sources from far-infrared (FIR) line and mid-infrared continuum emission maps....

Direct detection of a flared disk around a young massive star HD200775 and its 10 to 1000AU scale properties (2009)

Okamoto, Yoshiko K., Kataza, Hirokazu, Honda, M., Fujiwara, H., Momose, M., Ohashi, N., ...

We made mid-infrared observations of the 10Msun Herbig Be star HD200775 with the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on the 8.2m Subaru Telescope. We discovered diffuse emission of...

Subaru Mid-infrared Imaging of the Quadruple Lenses. II. Unveiling Lens Structure of MG0414+0534 and Q2237+030 (2009)

Minezaki, Takeo, Chiba, Masashi, Kashikawa, Nobunari, Inoue, Kaiki Taro, Kataza, Hirokazu

We present mid-infrared imaging at 11.7 $\mu$m for the quadruple lens systems, MG0414+0534 and Q2237+030, using the cooled mid-infrared camera and spectrometer (COMICS) attached on the Subaru...

Hot debris dust around HD 106797 (2009)

Fujiwara, Hideaki, Yamashita, Takuya, Ishihara, Daisuke, Onaka, Takashi, Kataza, Hirokazu, Ootsubo, Takafumi, ...

Photometry of the A0 V main-sequence star HD 106797 with AKARI and Gemini/T-ReCS is used to detect excess emission over the expected stellar photospheric emission between 10 and 20 micron, which is...

Dark Matter Substructure in Lensing Galaxies (2008)

Chiba, Masashi, Minezaki, Takeo, Inoue, Kaiki T., Kashikawa, Nobunari, Kataza, Hirokazu, Sugai, Hajime

To set useful limits on the abundance of small-scale dark matter halos (subhalos) in a galaxy scale, we have carried out mid-infrared imaging and integral-field spectroscopy for a sample of quadruple...

Near-infrared and Mid-infrared Spectroscopy with the Infrared Camera (IRC) for AKARI (2007)

Ohyama, Youichi, Onaka, Takashi, Matsuhara, Hideo, Wada, Takehiko, Kim, Woojung, Fujishiro, Naofumi, ...

The Infrared Camera (IRC) is one of the two instruments on board the AKARI satellite. In addition to deep imaging from 1.8-26.5um for the pointed observation mode of the AKARI, it has a spectroscopic...

Optical Identification of 15 Micron Sources in the AKARI Performance Verification Field toward the North Ecliptic Pole (2007)

Matsuhara, Hideo, Wada, Takehiko, Pearson, Chris P., Oyabu, Shinki, Im, Myungshin, Imai, Koji, ...

We present the results of optical identifications for 257 mid-infrared sources detected with a deep 15um survey over approximately 80 arcmin^2 area in the AKARI performance verification field near...

The Infrared Camera (IRC) deep survey in the performance verification phase (2007)

Wada, Takehiko, Oyabu, Shinki, Ita, Yoshifusa, Matsuhara, Hideo, Pearson, Chris P., Onaka, Takashi, ...

We report the first results of a near- and mid- infrared deep survey with the Infrared Camera (IRC) onboard AKARI in the performance verification phase. Simultaneous observations by the NIR, MIR-S...

AKARI infrared imaging of reflection nebulae IC4954 and IC4955 (2007)

Ishihara, Daisuke, Onaka, Takashi, Kaneda, Hidehiro, Suzuki, Toyoaki, Kataza, Hirokazu, Sakon, Itsuki, ...

We present the observations of the reflection nebulae IC4954 and IC4955 region with the Infrared Camera (IRC) and the Far-Infrared Surveyor (FIS) on board the infrared astronomical satellite AKARI...

Detection of an H-alpha Emission Line on a Quasar, RX J1759.4+6638, at z=4.3 with AKARI (2007)

Oyabu, Shinki, Wada, Takehiko, Ohyama, Youichi, Matsuhara, Hideo, Takagi, Toshinobu, Nakagawa, Takao, ...

We report the detection of an H-alpha emission line in the low resolution spectrum of a quasar, RX J1759.4+6638, at a redshift of 4.3 with the InfraRed Camera (IRC) onboard the AKARI. This is the...

AKARI observations of circumstellar dust in the globular clusters NGC104 and NGC362 (2007)

Ita, Yoshifusa, Tanabe, Toshihiko, Matsunaga, Noriyuki, Nakada, Yoshikazu, Matsuura, Mikako, Onaka, Takashi, ...

We report preliminary results of AKARI observations of two globular clusters, NGC104 and NGC362. Imaging data covering areas of about 10x10 arcmin^2 centered on the two clusters have been obtained...

Nature of Infrared Sources in 11 micron Selected Sample from Early Data of the AKARI North Ecliptic Pole Deep Survey (2007)

Lee, Hyung Mok, Im, Myungshin, Wada, Takehiko, Shim, Hyunjin, Kim, Seong Jin, Lee, Myung Gyoon, ...

We present the properties of 11 $\mu$m selected sources detected in the early data of the North Ecliptic Pole Deep (NEP-Deep) Survey of AKARI. The data set covers 6 wavelength bands from 2.5 to 11...

The Asymmetric Thermal Emission of Protoplanetary Disk Surrounding HD 142527 Seen by Subaru/COMICS (2007)

Fujiwara, Hideaki, Honda, Mitsuhiko, Kataza, Hirokazu, Yamashita, Takuya, Onaka, Takashi, Fukagawa, Misato, ...

Mid-infrared (MIR) images of the Herbig Ae star HD 142527 were obtained at 18.8 and 24.5 micron with the Subaru/COMICS. Bright extended arc-like emission (outer disk) is recognized at r=0.85"...

Ionization of Polycyclic Aromatic Hydrocarbon Molecules around the Herbig Ae/Be environment (2007)

Sakon, Itsuki, Okamoto, Yoshiko K., Kataza, Hirokazu, Onaka, Takashi, Kaneda, Hidehiro, Honda, Mitsuhiko

We present the results of mid-infrared N-band spectroscopy of the Herbig Ae/Be system MWC1080 using the Cooled Mid-Infrared Camera and Spectrometer (COMICS) on board the 8m Subaru Telescope. The...

Subaru Mid-infrared Imaging of the Quadruple Lenses PG1115+080 and B1422+231: Limits on Substructure Lensing (2005)

Chiba, Masashi, Minezaki, Takeo, Kashikawa, Nobunari, Kataza, Hirokazu, Inoue, Kaiki Taro

We present mid-infrared imaging at 11.7 mu m for the quadruple lens systems, PG1115+080 and B1422+231, using the cooled mid-infrared camera and spectrometer (COMICS) attached on the Subaru telescope....

Crystalline Silicate Feature of the Vega-like star HD145263 (2004)

Honda, Mitsuhiko, Kataza, Hirokazu, Okamoto, Yoshiko K., Miyata, Takashi, Yamashita, Takuya, Sako, Shigeyuki, ...

We have observed the 8-13 $\mu$m spectrum (R$\sim$250) of the Vega-like star candidate HD145263 using Subaru/COMICS. The spectrum of HD145263 shows the broad trapezoidal silicate feature with the...

Detection of crystalline silicates around the T Tauri star Hen 3-600A (2003)

Honda, Mitsuhiko, Kataza, Hirokazu, Okamoto, Yoshiko K., Miyata, Takashi, Yamashita, Takuya, Sako, Shigeyuki, ...

We have carried out mid-infrared N-band spectroscopic observations of the T Tauri star Hen 3-600A in the TW Hydra association with the COMICS on the 8.2m Subaru Telescope and found structured...