Kazuhiro Sekiguchi

The Subaru/XMM-Newton Deep Survey (SXDS): III. X-Ray Data (2008)

Ueda, Yoshihiro, Watson, Michael G., Stewart, Ian M., Akiyama, Masayuki, Schwope, Axel D., Lamer, Georg, ...

We present the X-ray source catalog in the Subaru/XMM-Newton deep survey. A continuous area of 1.14 deg^2 centered at R.A. = 02h18m and Dec. = -05d is mapped by seven pointings with XMM-Newton...

The Subaru/XMM-Newton Deep Survey (SXDS) -VII. Clustering Segregation with Ultraviolet and Optical Luminosities of Lyman-Break Galaxies at z~3 (2008)

Yoshida, Makiko, Shimasaku, Kazuhiro, Ouchi, Masami, Sekiguchi, Kazuhiro, Furusawa, Hisanori, Okamura, Sadanori

We investigate clustering properties of Lyman-break galaxies (LBGs) at z~3 based on deep multi-waveband imaging data from optical to near-infrared wavelengths in the Subaru/XMM-Newton Deep Field. The...

The Subaru/XMM-Newton Deep Survey (SXDS) - VI. Properties of Active Galactic Nuclei Selected by Optical Variability (2007)

Morokuma, Tomoki, Doi, Mamoru, Yasuda, Naoki, Akiyama, Masayuki, Sekiguchi, Kazuhiro, Furusawa, Hisanori, ...

We present the properties of active galactic nuclei (AGN) selected by optical variability in the Subaru/XMM-Newton Deep Field (SXDF). Based on the locations of variable components and light curves,...

The Subaru/XMM-Newton Deep Survey (SXDS) - V. Optically Faint Variable Object Survey (2007)

Morokuma, Tomoki, Doi, Mamoru, Yasuda, Naoki, Akiyama, Masayuki, Sekiguchi, Kazuhiro, Furusawa, Hisanori, ...

We present our survey for optically faint variable objects using multi-epoch (8-10 epochs over 2-4 years) $i'$-band imaging data obtained with Subaru Suprime-Cam over 0.918 deg$^2$ in the...

The Subaru/XMM-Newton Deep Survey (SXDS). IV. Evolution of Lya Emitters from z=3.1 to 5.7 in the 1 deg^2 Field: Luminosity Functions and AGN (2007)

Ouchi, Masami, Shimasaku, Kazuhiro, Akiyama, Masayuki, Simpson, Chris, Saito, Tomoki, Ueda, Yoshihiro, ...

We present luminosity functions (LFs) and various properties of Lya emitters (LAEs) at z=3.1, 3.7, and 5.7, in a 1 deg^2 sky of the Subaru/XMM-Newton Deep Survey (SXDS) Field. We obtain a photometric...

Evidence for a large fraction of Compton-thick quasars at high redshift (2007)

Martínez-Sansigre, Alejo, Rawlings, Steve, Bonfield, David G., Mateos, Silvia, Simpson, Chris, Watson, Mike, ...

Using mid-infrared and radio selection criteria, we pre-select a sample of candidate high-redshift type 2 quasars in the Subaru XMM-Newton Deep Field (SXDF). To filter out starburst contaminants, we...

Evidence for a large fraction of Compton-thick quasars at high redshift (2006)

Martinez-Sansigre, Alejo, Rawlings, Steve, Bonfield, David G., Mateos, Silvia, Simpson, Chris, Watson, Mike, ...

Using mid-infrared and radio selection criteria, we pre-select a sample of candidate high-redshift type-2 quasars in the Subaru XMM-Newton Deep Field (SXDF). To filter out starburst contaminants, we...

Radio imaging of the Subaru/XMM-Newton Deep Field - I. The 100-microJy catalogue, optical identifications, and the nature of the faint radio source population (2006)

Simpson, Chris, Martinez-Sansigre, Alejo, Rawlings, Steve, Ivison, Rob, Akiyama, Masayuki, Sekiguchi, Kazuhiro, ...

We describe deep radio imaging at 1.4-GHz of the 1.3 square degree Subaru/XMM-Newton Deep Field (SXDF), made with the Very Large Array in B and C configurations. We present a radio map of the entire...

Restframe Optical Spectroscopic Classifications for Submillimeter Galaxies (2006)

Takata, Tadafumi, Sekiguchi, Kazuhiro, Smail, Ian, Chapman, Scott C., Geach, J. E., Swinbank, A. M., ...

We report the results of a systematic near-infrared spectroscopic survey using the Subaru, VLT and Keck Telescopes of a sample of high redshift Ultra-luminous Infrared Galaxies (ULIRGs) mainly...

The Number Density of Old Passively-Evolving Galaxies at z=1 in the Subaru/XMM-Newton Deep Survey Field (2005)

Yamada, Toru, Kodama, Tadayuki, Akiyama, Masayuki, Furusawa, Hisanori, Iwata, Ikuru, Kajisawa, Masaru, ...

We obtained the number counts and the rest-frame B-band luminosity function of the color-selected old passively-evolving galaxies (OPEGs) at z=1 with very high statistical accuracy using a large and...

Current performance and on-going improvements of the 8.2 m Subaru Telescope (2004)

Iye, Masanori, Karoji, Hiroshi, Ando, Hiroyasu, Kaifu, Norio, Kodaira, Keiichi, Aoki, Kentaro, ...

An overview of the current status of the 8.2m Subaru Telescope constructed and operated at Mauna Kea, Hawaii, by the National Astronomical Observatory of Japan is presented. The basic design concept...

Dusty ERO Search behind Two Massive Clusters (2003)

Takata, Tadafumi, Kashikawa, Nobunari, Nakanishi, Kouichiro, Aoki, Kentaro, Asai, Ryo, Ebizuka, Noboru, ...

We performed deep K'-band imaging observations of 2 massive clusters, MS 0451.6-0305 at z = 0.55 and MS 0440.5+0204 at z = 0.19, for searching counterparts of the faint sub-mm sources behind these...

Decomposition of the Superwind in M82 (2002)

Ohyama, Youichi, Taniguchi, Yoshiaki, Iye, Masanori, Yoshida, Michitoshi, Sekiguchi, Kazuhiro, Takata, Tadafumi, ...

We present new optical images ($B$, $V$, and H$\alpha$) of the archetypical starburst/superwind galaxy M82 obtained with the 8.2 m Subaru Telescope to reveal new detailed structures of the...

An electrically powered binary star? (2001)

Wu, Kinwah, Cropper, Mark, Ramsay, Gavin, Sekiguchi, Kazuhiro

We propose a model for stellar binary systems consisting of a magnetic and a non-magnetic white-dwarf pair which is powered principally by electrical energy. In our model the luminosity is caused by...

A Shock-Induced Pair of Superbubbles in the High-Redshift Powerful Radio Galaxy MRC 0406-244 (2001)

Taniguchi, Yoshiaki, Ohyama, Youichi, Murayama, Takashi, Yoshida, Michitoshi, Kashikawa, Nobunari, Iye, Masanori, ...

We present new optical spectroscopy of the high-redshift powerful radio galaxy MRC 0406$-$244 at redshift of 2.429. We find that the two extensions toward NW and SE probed in the rest-frame...

Color-Magnitude Sequence in the Clusters at z$\sim$1.2 near the Radio Galaxy 3C 324 (2000)

Kajisawa, Masaru, Yamada, Toru, Tanaka, Ichi, Maihara, Toshinori, Iwamuro, Fumihide, Terada, Hiroshi, ...

We have investigated the optical and near-infrared colors of K'-selected galaxies in clusters at z ~ 1.2 near to the radio galaxy 3C 324 using images obtained with the Subaru telescope and archival...