S. Okamura

Details der Publikationsliste

Zeitraum

1995 - 2009

Anzahl

168

Co-Autoren

Properties of Disks and Bulges of Spiral and Lenticular Galaxies in the Sloan Digital Sky Survey (2009)

Oohama, N., Okamura, S., Fukugita, M., Yasuda, N., Nakamura, O.

A bulge-disk decomposition is made for 737 spiral and lenticular galaxies drawn from a SDSS galaxy sample for which morphological types are estimated. We carry out the bulge-disk decomposition using...

Discovery of a Giant Lyα Emitter Near the Reionization Epoch. (2009)

Ouchi, M., Ono, Y., Egami, E., Saito, T., Oguri, M., McCarthy, P.J., ...

Original article can be found at: http://www.iop.org/EJ/journal/ap Copyright American Astronomical Society. DOI: 10.1088/0004-637X/696/2/1164 [Full text of this article is not available in the UHRA]

Strange filamentary structures ("fireballs") around a merger galaxy in the Coma cluster of galaxies (2008)

Yoshida, M., Yagi, M., Komiyama, Y., Furusawa, H., Kashikawa, N., Koyama, Y., ...

We found an unusual complex of narrow blue filaments, bright blue knots, and H-alpha emitting filaments and clouds, which morphologically resembled a complex of ``fireballs,'' extending up to 80 kpc...

The Subaru/XMM-Newton Deep Survey (SXDS) - II. Optical Imaging and Photometric Catalogs (2008)

Furusawa, H., Kosugi, G., Akiyama, M., Takata, T., Sekiguchi, K., Tanaka, I., ...

We present multi-waveband optical imaging data obtained from observations of the Subaru/XMM-Newton Deep Survey (SXDS). The survey field, centered at R.A.=02:18:00, decl.=-05:00:00, has been the focus...

Wide-Field Imaging With Mosaic Ccd Cameras (2007)

Okamura Doi, S. Okamura, K. Shimasaku

An outline is given of our development of mosaic CCD cameras. Hardware and data reduction software of two operational cameras are described. Scientific objectives of wide-field imaging with the...

Gamow-Teller strength for the analog transitions to the first T=1/2, J^pi=3/2- states in 13C and 13N and the implications for Type Ia supernovae (2007)

Zegers, R. G. T., Brown, E. F., Akimune, H., Austin, Sam M., Brown, B. A., ...

The Gamow-Teller strength for the transition from the ground state of 13C to the T=1/2, J^pi=3/2- excited state at 3.51 MeV in 13N is extracted via the 13C(3He,t) reaction at 420 MeV. In contrast to...

The Galaxy Luminosity Functions down to M~-10 in the Hydra I Cluster (2007)

Yamanoi, H., Tanaka, M., Hamabe, M., Yagi, M., Okamura, S., Iye, M., ...

We study the galaxy population in the central region and a region about 0.6 Mpc away from the center of the Hydra I cluster in B- and Rc-bands down to M~-10 using the Subaru Suprime-Cam photometry....

The Cosmic Evolution Survey (COSMOS): Subaru observations of the HST cosmos field (2007)

Taniguchi, Y., Scoville, N., Murayama, T., Sanders, D. B., Mobasher, B., Aussel, H., ...

We present deep optical imaging observations of 2 square degree area, covered by the Cosmic Evolution Survey (COSMOS), made by the prime-focus camera (Supreme-Cam) on the 8.2 m Subaru Telescope....

A potential galaxy threshing system in the COSMOS field (2007)

Sasaki, S. S., Taniguchi, Y., Scoville, N., Mobasher, B., Aussel, H., Sanders, D. B., ...

We report on the discovery of a new potential galaxy threshing system in the COSMOS 2 square degree field using the prime-focus camera, Suprime-Cam, on the 8.2 m Subaru Telescope. This system...

A Potential Galaxy Threshing System in the Cosmos Field (2006)

Sasaki, S. S., Taniguchi, Y., Scoville, N., Mobasher, B., Aussel, H., Sanders, D. B., ...

We report on the discovery of a new potential galaxy threshing system in the COSMOS 2 square degree field using the prime-focus camera, Suprime-Cam, on the 8.2 m Subaru Telescope. This system...

The Cosmic Evolution Survey (COSMOS): Subaru Observations of the HST COSMOS Field (2006)

Taniguchi, Y., Scoville, N., Murayama, T., Sanders, D. B., Mobasher, B., Aussel, H., ...

We present deep optical imaging observations of 2 square degree area, covered by the Cosmic Evolution Survey (COSMOS), made by the prime-focus Camera (Supreme-Cam) on the 8.2m Subaru Telescope....

The End of the Reionization Epoch Probed by Ly-alpha Emitters at z=6.5 in the Subaru Deep Field (2006)

Kashikawa, N., Shimasaku, K., Malkan, M. A., Doi, M., Matsuda, Y., Ouchi, M., ...

We report an extensive search for Lyman-alpha emitters (LAEs) at z=6.5 in the Subaru Deep Field. Subsequent spectroscopy with Subaru and Keck identified eight more LAEs, giving a total of 17...

Ly Alpha Emitters at z=5.7 in the Subaru Deep Field (2006)

Shimasaku, K., Kashikawa, N., Doi, M., Ly, C., Malkan, M. A., Matsuda, Y., ...

We present the properties of Ly Alpha emitters (LAEs) at z = 5.7 in the Subaru Deep Field. A photometric sample of 89 LAE candidates is constructed from narrow-band (NB816) data down to NB816 = 26.0...

Stability properties of anisotropic pressure stellarator plasmas with fluid and noninteractive energetic particles (2006)

Cooper, W. A., Graves, J. P., Tran, T. M., Gruber, R., Yamaguchi, T., Narushima, Y., ...

The three-dimensional (3-D) VMEC code has been modified to model an energetic species with a variant of a Bi-Maxwellian distribution function that satisfies the constraint B . del F-h = 0, and the...

Anisotropic pressure bi-Maxwellian distribution function model for three-dimensional equilibria (2006)

Cooper, W. A., Graves, J. P., Hirshman, S. P., Yamaguchi, T., Narushima, Y., Okamura, S., ...

A formulation of the anisotropic pressure magnetohydrodynamic equilibrium problem for three-dimensional plasmas with imposed nested magnetic surfaces is developed based on a bi-Maxwellian model of...

The (t,3He) and (3He,t) reactions as probes of Gamow-Teller strength (2005)

Zegers, R. G. T., Akimune, H., Austin, Sam M., Bazin, D., Berg, G. P. A., ...

Charge-exchange reactions are an important tool for determining weak-interaction rates. They provide stringent tests for nuclear structure models necessary for modeling astrophysical environments...

Large-scale Filamentary Structure around the Protocluster at Redshift z=3.1 (2005)

Matsuda, Y., Yamada, T., Hayashino, T., Tamura, H., Yamauchi, R., Murayama, T., ...

We report the discovery of a large-scale coherent filamentary structure of Lyman alpha emitters in a redshift space at z=3.1. We carried out spectroscopic observations to map the three dimensional...

Orientation of Galaxies in the Local Supercluster: A Review (2005)

Hu, F. X., Wu, G. X., Song, G. X., Yuan, Q. R., Okamura, S.

The progress of the studies on the orientation of galaxies in the Local Supercluster (LSC) is reviewed and a summary of recent results is given. Following a brief introduction of the LSC, we describe...

Spectroscopy of i-Dropout Galaxies with an NB921-Band Depression in the Subaru Deep Field (2005)

Nagao, T., Kashikawa, N., Malkan, M. A., Murayama, T., Taniguchi, Y., Shimasaku, K., ...

We report new spectroscopy of two star-forming galaxies with strong Ly_alpha emission at z=6.03 and z=6.04 in the Subaru Deep Field. These two objects are originally selected as i'-dropouts (i'-z' >...

Number Density of Bright Lyman-Break Galaxies at z~6 in the Subaru Deep Field (2005)

Shimasaku, K., Ouchi, M., Furusawa, H., Yoshida, M., Kashikawa, N., Okamura, S.

We report on the bright Lyman-break galaxies (LBGs) selected in a 767 arcmin^2 area of the Subaru Deep Field. The selection is made in the i-zR vs zB-zR plane, where zB and zR are new bandpasses with...

Three-dimensional anisotropic pressure equilibria that model balanced tangential neutral beam injection effects (2005)

Cooper, W. A., Hirshman, S. P., Yamaguchi, T., Narushima, Y., Okamura, S., Sakakibara, S., ...

Fixed boundary three-dimensional anisotropic pressure equilibria are computed that are consistent with a family of distribution functions that load particles preferentially towards v parallel to...

The Discovery of Primeval Large-Scale Structures with Forming Clusters at Redshift 6 (2004)

Ouchi, M., Shimasaku, K., Akiyama, M., Sekiguchi, K., Furusawa, H., Okamura, S., ...

We report the discovery of primeval large-scale structures (LSSs) including two proto-clusters in a forming phase at z=5.7. We carried out extensive deep narrow-band imaging in the 1 deg^2 sky of the...

The Subaru Deep Field: The Optical Imaging Data (2004)

Kashikawa, N., Shimasaku, K., Yasuda, N., Ajiki, M., Akiyama, M., Ando, H., ...

The Subaru Deep Field (SDF) project is a program of Subaru Observatory to carry out a deep galaxy survey over a blank field as large as 34'x27'. The program consists of very deep multi-band optical...

A Strong Lyman-alpha Emitter at z=6.33 in the Subaru Deep Field Selected as an i' Dropout (2004)

Nagao, T., Taniguchi, Y., Kashikawa, N., Kodaira, K., Kaifu, N., Ando, H., ...

We report on the discovery of a star-forming galaxy at z=6.33 in the Subaru Deep Field. This object is selected as a candidate of an i'-dropout, high-redshift galaxy around z=6 because of its red...

A Subaru Search for Ly-alpha Blobs in and around the Proto-cluster Region at Redshift z=3.1 (2004)

Matsuda, Y., Yamada, T., Hayashino, T., Tamura, H., Yamauchi, R., Ajiki, M., ...

We report the properties of the 35 robust candidates of Ly-alpha blobs (LABs), which are larger than 16 arcsec^2 in isophotal area and brighter than 0.7 x 10^-16 ergs s^-1 cm^-2, searched in and...

Newcomers Meet the Intracluster Medium in the Coma Cluster (2004)

Poggianti, B. M., Bridges, T. J., Yagi, M., Komiyama, Y., Carter, D., Mobasher, B., ...

A main topic at this meeting is how galaxies are affected when they enter for the first time the cluster environment from the outskirts. Most of the times we are forced to infer the environmental...

Large Cosmic Variance in the Clustering Properties of Lyman Alpha Emitters at z~5 (2004)

Shimasaku, K., Hayashino, T., Matsuda, Y., Ouchi, M., Ohta, K., Okamura, S., ...

We reported in a previous paper the discovery of large-scale structure of Lyman Alpha emitters (LAEs) at z=4.86+-0.03 with a projected size of 20 Mpc x 50 Mpc in narrow-band data of a 25' x 45' area...

Confinement characteristics of the quasi-axisymmetric stellarator CHS-qa (2004)

Okamura, S., Matsuoka, K., Nishimura, S., Isobe, M., Suzuki, C., Shimuzu, A., ...

A low aspect ratio stellarator CHS-qa with a quasi-axisymmetric configuration has been designed at NIFS, whose main objective is the experimental study of confinement improvement. The high beta...

Magnetohydrodynamic stability of free-boundary quasi-axisymmetric stellarator equilibria with finite bootstrap current (2004)

Cooper, W. A., Margalet, S. F. I., Allfrey, S. J., Kisslinger, J., Wobig, H. F. G., Narushima, Y., ...

The impact of the bootstrap current is investigated on the equilibrium properties of a two-period quasi-axisymmetric stellarator reactor with free boundary and on the corresponding ideal...

A Deep, Wide Field, Optical, and Near Infrared Catalog of a Large Area around the Hubble Deep Field North (2003)

Capak, P., Cowie, L. L., Hu, E. M., Barger, A. J., Dickinson, M., Fernandez, E., ...

We have conducted a deep multi-color imaging survey of 0.2 degrees^2 centered on the Hubble Deep Field North (HDF-N). We shall refer to this region as the Hawaii-HDF-N. Deep data were collected in U,...

The relation between galactic properties and cluster structure (2003)

Poggianti, Bianca M., Bridges, Terry J., Yagi, M., Komiyama, Y., Carter, D., Mobasher, B., ...

A satisfactory understanding of the origin of the dependence of galaxy properties on their environment has remained, so far, out of reach. In the light of numerous observational results and...

Subaru Deep Spectroscopy of the Very Extended Emission-Line Region of NGC 4388: Ram Pressure Stripped Gas Ionized by the Nuclear Radiation (2003)

Yoshida, M., Ohyama, Y., Iye, M., Aoki, K., Kashikawa, N., Sasaki, T., ...

We report here the results of deep optical spectroscopy of the very extended emission-line region (VEELR) found serendipitously around the Seyfert 2 galaxy NGC 4388 in the Virgo cluster using the...

Subaru Deep Survey V. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Photometric Properties (2003)

Ouchi, M., Shimasaku, K., Okamura, S., Furusawa, H., Kashikawa, N., Ota, K., ...

(abridged) We investigate photometric properties of Lyman Break Galaxies (LBGs) at z=3.5-5.2 based on large samples of 2,600 LBGs detected in deep (i'~27) and wide-field (1,200 arcmin^2) images taken...

Subaru Deep Survey VI. A Census of Lyman Break Galaxies at z=4 and 5 in the Subaru Deep Fields: Clustering Properties (2003)

Ouchi, M., Shimasaku, K., Okamura, S., Furusawa, H., Kashikawa, N., Ota, K., ...

We investigate the clustering properties of 2,600 Lyman Break Galaxies (LBGs) at z=3.5-5.2 in two large blank fields, the Subaru Deep Field and the Subaru/XMM Deep Field (600arcmin^2 each). The...

A comparison of the galaxy populations in the Coma and distant clusters: the evolution of k+a galaxies and the role of the intracluster medium (2003)

Poggianti, B. M., Bridges, T. J., Komiyama, Y., Yagi, M., Carter, D., Mobasher, B., ...

The spectroscopic properties of galaxies in the Coma cluster are compared with those of galaxies in rich clusters at $z \sim 0.5$, to investigate the evolution of the star formation history in...

The Halpha Luminosity Function and Star Formation Rate at z~0.24 Based on Subaru Deep Imaging Data (2003)

Fujita, S. S., Ajiki, M., Shioya, Y., Nagao, T., Murayama, T., Taniguchi, Y., ...

We have carried out a deep imaging survey for H$\alpha$ emitting galaxies at $z\approx$0.24 using a narrowband filter tuned with the redshifted line. The total sky area covered is 706 arcmin$^2$...

Subaru Deep Survey. IV. Discovery of a Large-Scale Structure at Redshift \simeq 5 (2003)

Shimasaku, K., Ouchi, M., Okamura, S., Kashikawa, N., Doi, M., Furusawa, H., ...

We report the discovery of a large-scale structure of Lyman alpha emitters (LAEs) at z=4.86 based on wide-field imaging with the prime-focus camera (Suprime-Cam) on the Subaru telescope. We observed...

The Discovery of a Very Narrow-Line Star Forming Obat a Redshift of 5.66ject (2003)

Taniguchi, Y., Ajiki, M., Murayama, T., Nagao, T., Veilleux, S., Sanders, D. B., ...

We report on the discovery of a very narrow-line star forming object beyond redshift of 5. Using the prime-focus camera, Suprime-Cam, on the 8.2 m Subaru telescope together with a narrow-passband...

A Photometric and Spectroscopic Study of Dwarf and Giant Galaxies in the Coma Cluster - IV. The Luminosity Function (2003)

Mobasher, Bahram, Colless, Matthew, Carter, David, Poggianti, Bianca, Bridges, Terry, Kranz, K., ...

A large spectroscopic survey is constructed of galaxies in the Coma cluster. The survey covers a wide area (1 deg$^2$) to deep magnitudes (R ~ 19.5), covering both the core (high density) and...

A demonstration of magnetic field optimization in LHD (2003)

Murakami,S., Yamada,H., Wakasa,A., Sasao,M., Isobe,M., Ozaki,T., ...

The behaviors of trapped particles in helical ripples are complicated and would enhance the radial transport of energetic particles and thermal plasma (neoclassical transport) in heliotrons. Thus the...

MHD instabilities and their effects on plasma confinement in the large helical device plasmas (2003)

Toi,K., Ohdachi,S., Yamamoto,S., Nakajima,N., Sakakibara,S., Watanabe,K. Y., ...

MHD stability of NBI heated plasmas and impacts of MHD modes on plasma confinement are intensively studied in the Large Helical Device (LHD). Three characteristic MHD instabilities were observed,...

A demonstration of magnetic field optimization in LHD (2003)

Murakami, S., Yamada, H., Wakasa, A., Sasao, M., Isobe, M., Ozaki, T., ...

The behaviors of trapped particles in helical ripples are complicated and would enhance the radial transport of energetic particles and thermal plasma (neoclassical transport) in heliotrons. Thus the...

MHD instabilities and their effects on plasma confinement in the large helical device plasmas (2003)

Toi, K., Ohdachi, S., Yamamoto, S., Nakajima, N., Sakakibara, S., Watanabe, K. Y., ...

MHD stability of NBI heated plasmas and impacts of MHD modes on plasma confinement are intensively studied in the Large Helical Device (LHD). Three characteristic MHD instabilities were observed,...

Recent advances in the LHD experiment (2003)

Motojima, O., Ohyabu, N., Komori, A., Kaneko, O., Yamada, H., Kawahata, K., ...

In the first four years of the LHD experiment, several encouraging results have emerged, the most significant of which is that MHD stability and good transport are compatible in the inward shifted...

Revision of the Selection Function of the Optical Redshift Survey using the Sloan Digital Sky Survey Early Data Release: Toward an Accurate Estimate of Source Number Density of Ultra-High Energy Cosmic Rays (2002)

Yoshiguchi, H., Nagataki, S., Sato, K., Ohama, N., Okamura, S.

If Ultra-High Energy Cosmic Rays (UHECRs) are originated from nearby galaxies, modeling of the distribution of nearby galaxies is important to an accurate estimate the source number density of...

Bootstrap current destabilization of ideal MHD modes in three- dimensional reactor configurations (2002)

Cooper,W. A., Margalet,S. F., Allfrey,S. J., Isaev,M. Y., Mikhailov,M. I., Shafranov,V. D., ...

In current-free stellarators, the parallel current density is normally too weak to drive global external kink modes. However, at finite values of beta, the bootstrap current (BC) can provide...

Narrow band imaging in [OIII] and Halpha to search for ICPNe in the Virgo cluster (2002)

Arnaboldi, M., Freeman, K. C., Okamura, S., Yasuda, N., Gerhard, O., Napolitano, N. R., ...

We have identified intracluster planetary nebulae in a Virgo cluster core field by imaging with the Subaru Suprime-Cam through two narrow band filters centered at the redshifted wavelengths of the...

Candidates for Intracluster Planetary Nebulae in the Virgo Cluster based on the Suprime-Cam Narrow-Band Imaging in O[III] and Halpha (2002)

Okamura, S., Yasuda, N., Arnaboldi, M., Freeman, K. C., Ando, H., Doi, M., ...

We have identified 38 candidates of intracluster planetary nebulae (ICPNe) in a $34'\times27'$ field in the core of the Virgo cluster based on the Suprime-Cam imaging through two narrow-band filters...

Evolution of Elliptical Galaxies at z >~ 1 Revealed from a Large, Multicolor Sample of Extremely Red Objects (2002)

Miyazaki, M., Shimasaku, K., Kodama, T., Okamura, S., Furusawa, H., Ouchi, M., ...

We study the evolution of elliptical galaxies at z >~ 1 on the basis of a sample of 247 Extremely Red Objects (EROs) with R-Ks >= 3.35 (AB) and Ks

Searching for dark matter halos in the Suprime-Cam 2 sq deg field (2002)

Miyazaki, S., Hamana, T., Shimasaku, K., Furusawa, H., Doi, M., Hamabe, M., ...

We report the first result of weak gravitational lensing survey on a 2.1 sq deg Rc-band image taken with a wide field camera (Suprime-Cam) on the prime focus of 8.2 m Subaru Telescope. The weak...

Cosmic shear statistics in the Suprime-Cam 2.1 sq deg field: Constraints on Omega_m and sigma_8 (2002)

Hamana, T., Miyazaki, S., Shimasaku, K., Furusawa, H., Doi, M., Hamabe, M., ...

We present measurements of the cosmic shear correlation in the shapes of galaxies in the Suprime-Cam 2.1 deg^2 R_c-band imaging data. As an estimator of the shear correlation originated from the...

The Broad-band Optical Properties of Galaxies with Redshifts 0.0 < z < 0.2 (2002)

Blanton, M. R., Hogg, D. W., Bahcall, N. A., Baldry, I. K., Brinkmann, J., Csabai, I., ...

Using photometry and spectroscopy of 144,609 galaxies from the Sloan Digital Sky Survey, we present bivariate distributions of pairs of seven galaxy properties: four optical colors, surface...

Witnessing the Hierarchical Assembly of the Brightest Cluster Galaxy in a Cluster at z=1.26 (2002)

Yamada, T., Koyama, Y., Nakata, F., Kajisawa, M., Tanaka, I., Kodama, T., ...

We have obtained a new high-resolution K'-band image of the central region of the rich X-ray cluster RX J0848.9+4452 at z=1.26. We found that the brightest cluster galaxy (BCG) in the cluster is...

A New High-Redshift Lyman alpha Emitter: Possible Superwind Galaxy at z = 5.69 (2002)

Ajiki, M., Taniguchi, Y., Murayama, T., Nagao, T., Veilleux, S., Shioya, Y., ...

During the course of our deep optical imaging survey for Ly alpha emitters at z approximately 5.7 in the field around the z=5.74 quasar SDSSp J104433.04-012502.2, we have found a candidate strong...

Subaru Deep Survey II. Luminosity Functions and Clustering Properties of Lya Emitters at z=4.86 in the Subaru Deep Field (2002)

Ouchi, M., Shimasaku, K., Furusawa, H., Miyazaki, M., Doi, M., Hamabe, M., ...

We report on early results from deep and wide-field narrow-band imaging on a 543 arcmin^2 area of the Subaru Deep Field. We find 87 Lya emitters (LAEs) at z=4.86(+/-0.03) which are photometrically...

Sloan Digital Sky Survey: Early data release (2002)

Stoughton, C., Lupton, R. H., Bernardi, M., Blanton, M. R., Burles, S., Castander, F. J., ...

The Sloan Digital Sky Survey (SDSS) is an imaging and spectroscopic survey that will eventually cover approximately one-quarter of the celestial sphere and collect spectra of 10 6 galaxies, 100,000...

Bootstrap current destabilization of ideal MHD modes in three- dimensional reactor configurations (2002)

Cooper, W. A., Margalet, S. F., Allfrey, S. J., Isaev, M. Y., Mikhailov, M. I., Shafranov, V. D., ...

In current-free stellarators, the parallel current density is normally too weak to drive global external kink modes. However, at finite values of beta, the bootstrap current (BC) can provide...

Bootstrap current destabilization of ideal MHD modes in three-dimensional reactor configurations (2002)

Cooper, W. A., Margalet, S. F., Allfrey, S. J., Isaev, M. Y., Mikhailov, M. I., Shafranov, V. D., ...

In current-free stellarators, the parallel current density is normally too weak to drive global external kink modes. However, at finite values of beta, the bootstrap current (BC) can provide...

A photometric and spectroscopic study of dwarf and giant galaxies in the Coma cluster - V. Dependence of the spectroscopic properties on location in the cluster (2001)

Carter, D., Mobasher, B., Bridges, T. J., Poggianti, B. M., Komiyama, Y., Kashikawa, N., ...

We investigate the radial dependence of the spectroscopic properties, in particular the Mg2, and H beta spectroscopic indices, in a sample of galaxies spanning a wide range of absolute luminosity in...

Early-type galaxies in the SDSS (2001)

Bernardi, M., Sheth, R. K., Annis, J., Burles, S., Eisenstein, D. J., Finkbeiner, D. P., ...

A sample of nearly 9000 early-type galaxies, in the redshift range 0.01

The Transformation of Galaxies within the Large Scale Structure around a z=0.41 Cluster (2001)

Kodama, Tadayuki, Smail, Ian, Nakata, F., Okamura, S., Bower, R. G.

We present deep, panoramic multi-color imaging of the distant rich cluster A851 (Cl0939+4713, z=0.41) using Suprime-Cam on Subaru. These images cover a 27' field of view, ~11 Mpc at z=0.41, and by...

History of mass assembly and star formation in clusters (2001)

Kodama, T., Smail, Ian, Nakata, F., Okamura, S., Bower, R. G.

We present deep, panoramic multi-color imaging of the distant rich cluster A851 (z=0.41) using Suprime-Cam on Subaru. These images cover a 27' field of view (~11 h_{50}^{-1}Mpc), and by exploiting...

Ages of S0 and elliptical galaxies in the Coma cluster (2001)

Poggianti, B. M., Bridges, T., Carter, D., Mobasher, B., Doi, M., Iye, M., ...

The ages of stellar populations in 52 elliptical and S0 galaxies in the Coma cluster are investigated using a new spectroscopic sample. More than 40% of the S0s are found to have experienced recent...

A photometric and spectroscopic study of dwarf and giant galaxies in the Coma cluster - II. Spectroscopic observations (2001)

Mobasher, B., Bridges, T. J., Carter, D., Poggianti, B., Komiyama, Y., Kashikawa, N., ...

This is the second paper in a series studying the photometric and spectroscopic properties of galaxies of different luminosities in the Coma cluster. The sample selection, spectroscopic observations...

A photometric and spectroscopic study of dwarf and giant galaxies in the Coma cluster -- III. Spectral ages and metallicities (2001)

Poggianti, B. M., Bridges, T., Mobasher, B., Carter, D., Doi, M., Iye, M., ...

(abr.) We present the analysis of the spectroscopic catalog of galaxies in the Coma cluster from Mobasher et al. This catalog comprises ~300 spectra of cluster members with magnitudes M_B=-20.5 to...

Statistical Properties of Bright Galaxies in the SDSS Photometric System (2001)

Shimasaku, K., Fukugita, M., Doi, M., Hamabe, M., Ichikawa, T., Okamura, S., ...

We investigate the photometric properties of 456 bright galaxies using imaging data recorded during the commissioning phase of the Sloan Digital Sky Survey (SDSS). Morphological classification is...

Effect of toroidal current and profile on ballooning instability mechanisms in a quasiaxisymmetric stellarator (2001)

Cooper, W. A., Okamura, S., Yamazaki, K.

Finite toroidal plasma current reduces the magnitude of the normal magnetic field line curvature near midvolume in a quasiaxisymmetric stellarator. This improves the ideal ballooning stability...

Deep-Imaging Observations of a Candidate of an Absorbed QSO at z=0.653, AX J131831+3341 (2000)

Akiyama, M., Ohta, K., Tamura, N., Doi, M., Kimura, M., Komiyama, Y., ...

The results of deep-imaging observations of a candidate of an absorbed QSO at z=0.653, AX J131831+3341, are presented. AX J131831+3341 was found during the course of optical follow-up observations of...

Subaru Deep Survey I. Near-Infrared Observations (2000)

Maihara, T., Iwamuro, F., Tanabe, H., Taguchi, T., Hata, R., Oya, S., ...

Deep near-infrared images of a blank 2'x2' section of sky near the Galactic north pole taken by Subaru Telescope are presented. The total integration times of the J and K' bands are 12.1 hours and...

The Morphology Dependence of Luminosity Segregation in the Coma Cluster (1998)

Kashikawa, N., Sekiguchi, M., Doi, M., Komiyama, Y., Okamura, S., Shimasaku, K., ...

We carry out CCD photometry of galaxies in the 5.25 square region centered on Coma cluster down to $M_R=-16.0$, beyond the limit of conventional morphological classification. We use the angular...

Identification of a functional receptor for granulocyte colony-stimulating factor on platelets.

Shimoda, K, Okamura, S, Harada, N, Kondo, S, Okamura, T, Niho, Y

Since granulocyte colony-stimulating factor (G-CSF) is thought to be a granulocyte lineage-specific cytokine, G-CSF receptors on blood cells other than those of granulocyte or monocyte lineage have...

Protective effect of recombinant murine granulocyte-macrophage colony-stimulating factor against Pseudomonas aeruginosa infection in leukocytopenic mice.

Tanaka, T, Okamura, S, Okada, K, Suga, A, Shimono, N, Ohhara, N, ...

The effects of recombinant murine granulocyte-macrophage colony-stimulating factor (rmGM-CSF) against Pseudomonas aeruginosa infection in ICR mice were investigated. Mice were treated with...

Genetic exploration of interactive domains in RNA polymerase II subunits.

Martin, C, Okamura, S, Young, R

The two large subunits of RNA polymerase II, RPB1 and RPB2, contain regions of extensive homology to the two large subunits of Escherichia coli RNA polymerase. These homologous regions may represent...

Conditional mutations occur predominantly in highly conserved residues of RNA polymerase II subunits.

Scafe, C, Martin, C, Nonet, M, Podos, S, Okamura, S, Young, R A

Conditional mutations in the Saccharomyces cerevisiae RNA polymerase II large subunit, RPB1, were obtained by introducing a mutagenized RPB1 plasmid into yeast cells, selecting for loss of the...

A divergent testis-specific alpha-tubulin isotype that does not contain a coded C-terminal tyrosine.

Pratt, L F, Okamura, S, Cleveland, D W

On the basis of analysis of cDNA clones of alpha-tubulin RNAs expressed during spermiogenesis in chickens, we report the identification of a novel alpha-tubulin which is expressed exclusively in...

Jejunal pouch reconstruction after total gastrectomy for cancer. A randomized controlled trial.

Nakane, Y, Okumura, S, Akehira, K, Okamura, S, Boku, T, Okusa, T, ...

OBJECTIVE: The authors determined the optimum reconstruction procedure after total gastrectomy in terms of the quality of life of the patients. SUMMARY BACKGROUND DATA: Gastric replacement with...

Identification of a functional receptor for granulocyte colony-stimulating factor on platelets.

Shimoda, K, Okamura, S, Harada, N, Kondo, S, Okamura, T, Niho, Y

Since granulocyte colony-stimulating factor (G-CSF) is thought to be a granulocyte lineage-specific cytokine, G-CSF receptors on blood cells other than those of granulocyte or monocyte lineage have...

Protective effect of recombinant murine granulocyte-macrophage colony-stimulating factor against Pseudomonas aeruginosa infection in leukocytopenic mice.

Tanaka, T., Okamura, S., Okada, K., Suga, A., Shimono, N., Ohhara, N., ...

The effects of recombinant murine granulocyte-macrophage colony-stimulating factor (rmGM-CSF) against Pseudomonas aeruginosa infection in ICR mice were investigated. Mice were treated with...

Genetic exploration of interactive domains in RNA polymerase II subunits.

Martin, C, Okamura, S, Young, R

The two large subunits of RNA polymerase II, RPB1 and RPB2, contain regions of extensive homology to the two large subunits of Escherichia coli RNA polymerase. These homologous regions may represent...

Conditional mutations occur predominantly in highly conserved residues of RNA polymerase II subunits.

Scafe, C, Martin, C, Nonet, M, Podos, S, Okamura, S, Young, R A

Conditional mutations in the Saccharomyces cerevisiae RNA polymerase II large subunit, RPB1, were obtained by introducing a mutagenized RPB1 plasmid into yeast cells, selecting for loss of the...

A divergent testis-specific alpha-tubulin isotype that does not contain a coded C-terminal tyrosine.

Pratt, L F, Okamura, S, Cleveland, D W

On the basis of analysis of cDNA clones of alpha-tubulin RNAs expressed during spermiogenesis in chickens, we report the identification of a novel alpha-tubulin which is expressed exclusively in...

Jejunal pouch reconstruction after total gastrectomy for cancer. A randomized controlled trial.

Nakane, Y, Okumura, S, Akehira, K, Okamura, S, Boku, T, Okusa, T, ...

OBJECTIVE: The authors determined the optimum reconstruction procedure after total gastrectomy in terms of the quality of life of the patients. SUMMARY BACKGROUND DATA: Gastric replacement with...

The utility of endoscopic ultrasonography and endoscopy in the endoscopic mucosal resection of early gastric cancer

Ohashi, S, Segawa, K, Okamura, S, Mitake, M, Urano, H, Shimodaira, M, ...

OBJECTIVE—To clarify the usefulness of endoscopic ultrasonography (EUS) and endoscopy in the endoscopic mucosal resection (EMR) of early gastric cancer. Patients/Methods—EMR was performed in...

Single-cell immunofluorescence assay for terminal transferase: Human leukaemic and non-leukaemic cells

Okamura, S., Crane, F., Jamal, N., Messner, H. A., Mak, T. W.

The characteristics of a single-cell immunofluorescence assay for terminal deoxynucleotidyl transferase (terminal transferase, TdT) is described. The data indicate that the single-cell...