Yutaka Komiyama

Details der Publikationsliste

Zeitraum

1990 - 2009

Anzahl

34

Co-Autoren

A QSO host galaxy and its Lyalpha emission at z=6.43 (2009)

Goto, Tomotsugu, Utsumi, Yousuke, Furusawa, Hisanori, Miyazaki, Satoshi, Komiyama, Yutaka

We report an optical detection of an extended structure around a QSO at z=6.43 (CFHQSJ2329-0301, the highest redshift QSO currently known) in deep z' and z_r-band images of the Subaru/Suprime-Cam....

Science with UT's Dichroic-Mirror Camera (DMC), 15-band simultaneous imager (2008)

Kuncarayakti, Hanindyo, Doi, Mamoru, Malasan, Hakim L., Hayano, Junji, Utsunomiya, Hiroyuki, Ihara, Yutaka, ...

We introduce the Dichroic-Mirror Camera (DMC), an instrument developed at the University of Tokyo which is capable of performing simultaneous imaging in fifteen bands. The main feature of the DMC is...

Proper motions with Subaru I. Methods and a first sample in the Subaru Deep Field (2008)

Richmond, Michael W., Morokuma, Tomoki, Doi, Mamoru, Komiyama, Yutaka, Yasuda, Naoki, Okamura, Sadanori, ...

We search for stars with proper motions in a set of twenty deep Subaru images, covering about 0.28 square degrees to a depth of i ~ 25, taken over a span of six years. In this paper, we describe in...

The Extended Star Formation History of the Andromeda Spheroid at 35 Kpc on the Minor Axis (2008)

Brown, Thomas M., Beaton, Rachael, Chiba, Masashi, Ferguson, Henry C., Gilbert, Karoline M., Guhathakurta, Puragra, ...

Using the HST ACS, we have obtained deep optical images reaching well below the oldest main sequence turnoff in fields on the southeast minor-axis of the Andromeda Galaxy, 35 kpc from the nucleus....

The HST/ACS Coma Cluster Survey: I - Survey Objectives and Design (2008)

Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...

We describe the HST ACS Coma cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma cluster (Abell 1656). The survey was designed to...

The Hubble Space Telescope Advanced Camera for Surveys Coma Cluster survey I: survey objectives and design (2008)

Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...

We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to...

The Hubble Space Telescope Advanced Camera for Surveys Coma Cluster survey I: survey objectives and design (2008)

Carter, David, Goudfrooij, Paul, Mobasher, Bahram, Ferguson, Henry C., Puzia, Thomas H., Aguerri, Alfonso L., ...

We describe the HST ACS Coma Cluster Treasury survey, a deep two-passband imaging survey of one of the nearest rich clusters of galaxies, the Coma Cluster (Abell 1656). The survey was designed to...

Searching for a Companion Star of Tycho's Type Ia Supernova with Optical Spectroscopic Observations (2007)

Ihara, Yutaka, Ozaki, Jin, Doi, Mamoru, Shigeyama, Toshikazu, Kashikawa, Nobunari, Komiyama, Yutaka, ...

We report our first results of photometric and spectroscopic observations for Tycho's supernova remnant (SNR Tycho) to search for the companion star of a type Ia supernova (SN Ia). From photometric...

Wide-field Survey around Local Group Dwarf Spheroidal Galaxy Leo II: Spatial Distribution of Stellar Content (2007)

Komiyama, Yutaka, Doi, Mamoru, Furusawa, Hisanori, Hamabe, Masaru, Imi, Katsumi, Kimura, Masahiko, ...

We carried out a wide-field V, I imaging survey of the Local Group dwarf spheroidal galaxy Leo II using the Subaru Prime Focus Camera on the 8.2-m Subaru Telescope. The survey covered an area of...

A Subaru/Suprime-Cam Survey of M31's spheroid along the South-East minor axis (2007)

Tanaka, Mikito, Chiba, Masashi, Komiyama, Yutaka, Iye, Masanori, Guhathakurta, Puragra

We have used Suprime-Cam on the Subaru Telescope to conduct a V- and I-band imaging survey of fields sampling the spheroid of the Andromeda galaxy along its south-east minor axis. Our photometric...

The Habitat Segregation between Lyman Break Galaxies and Lyman alpha Emitters around a QSO at z~5 (2007)

Kashikawa, Nobunari, Kitayama, Tetsu, Doi, Mamoru, Misawa, Toru, Komiyama, Yutaka, Ota, Kazuaki

We carried out a target survey for Lyman break galaxies (LBGs) and Lyman alpha emitters (LAEs) around QSO SDSS J0211-0009 at z=4.87. The deep and wide broadband and narrowband imaging simultaneously...

The Remarkable 60 x 2 kpc Optical Filament Associated with a Poststarburst Galaxy in Coma Cluster (2007)

Yagi, Masafumi, Komiyama, Yutaka, Yoshida, Michitoshi, Furusawa, Hisanori, Kashikawa, Nobunari, Koyama, Yusei, ...

In the deep narrow band image of the Coma Cluster taken with Suprime-Cam of the Subaru telescope, we found an extremely long and narrow (~ 60 kpc x 2 kpc) Halpha emitting region associated with a...

Discovery of a Large Scale Clumpy Structure around the Lynx Supercluster at z~1.27 (2004)

Nakata, Fumiaki, Kodama, Tadayuki, Shimasaku, Kazuhiro, Doi, Mamoru, Furusawa, Hisanori, Hamabe, Masaru, ...

We report the discovery of a probable large scale structure composed of many galaxy clumps around the known twin clusters at z=1.26 and z=1.27 in the Lynx region. Our analysis is based on deep,...

A Subaru Search for Lyman-Alpha Emitters at z=5.8 with an Intermediate-Band Filter (2004)

Ajiki, Masaru, Taniguchi, Yoshiaki, Fujita, Shinobu S., Shioya, Yasuhiro, Nagao, Tohru, Murayama, Takashi, ...

We present the results of a survey for Ly-alpha emitters at z ~ 5.8 using a new intermediate-band filter centered at lambda_c = 8275 AA with Delta-lambda_FWHM = 340 AA (i.e., the spectroscopic...

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...

The Luminosity Function of Lyman Alpha Emitters at Redshift z~5.7 (2003)

Hu, Esther M., Cowie, Lennox L., Capak, Peter, McMahon, Richard G., Hayashino, Tomoki, Komiyama, Yutaka

We report results of a deep wide-field narrowband survey for redshift z~5.7 Ly alpha emitters carried out with SuprimeCam on Subaru 8.3-m telescope. Deep narrowband imaging of the SSA22 field through...

Two formation paths for cluster dwarf galaxies? (2003)

Poggianti, Bianca M., Kashikawa, Nobunari, Bridges, Terry, Mobasher, Bahram, Komiyama, Yutaka, Carter, Dave, ...

A surprising result of our recent spectroscopic survey of galaxies in the Coma cluster has been the discovery of a possible bimodal distribution in the metallicities of faint galaxies at $M_B>-17$....

The Halpha Luminosity Function of the Galaxy Cluster Abell 521 at z = 0.25 (2003)

Umeda, Kazuyoshi, Yagi, Masafumi, Yamada, Sanae F., Taniguchi, Yoshiaki, Shioya, Yasuhiro, Murayama, Takashi, ...

We present an optical multicolor-imaging study of the galaxy cluster Abell 521 at $z = 0.25$, using Suprime-Cam on the Subaru Telescope, covering an area of $32 \times 20$ arcmin$^2$ ($9.4 \times 5.8...

A Subaru Search for Lyman$\alpha$ Emitters at Redshift 5.7 (2003)

Ajiki, Masaru, Taniguchi, Yoshiaki, Fujita, Shinobu S., Shioya, Yasuhiro, Nagao, Tohru, Murayama, Takashi, ...

We present the results of a survey for Ly$\alpha$ emitters at $z\approx 5.7$ based on optical narrow-band ($\lambda_{\rm c} = 8150$ \AA ~ and $\Delta\lambda = 120$ \AA), and broad-band ($B$, $R_{\rm...

Are Two z~6 Quasars Gravitationally Lensed ? (2003)

Yamada, Sanae F., Shioya, Yasuhiro, Taniguchi, Yoshiaki, Murayama, Takashi, Ajiki, Masaru, Nagao, Tohru, ...

Several high-z (z > 5.7) quasars have been found in the course of Sloan Digital Sky Survey. The presence of such very high-z quasars is expected to give constraints on early structure formation. On...

IL-1-induced tumor necrosis factor-{alpha} elicits inflammatory cell infiltration in the skin by inducing IFN-{gamma}-inducible protein 10 in the elicitation phase of the contact hypersensitivity response (2003)

Nakae, Susumu, Komiyama, Yutaka, Narumi, Shosaku, Sudo, Katsuko, Horai, Reiko, Tagawa, Yoh-ichi, ...

Contact hypersensitivity (CHS) is a typical inflammatory response against contact allergens. Inflammatory cytokines, including IL‐1 and tumor necrosis factor (TNF)‐α, are implicated in the...

SDSSp J104433.04$-$012502.2 at $z=5.74$ is Gravitationally Magnified by an Intervening Galaxy (2002)

Shioya, Yasuhiro, Taniguchi, Yoshiaki, Murayama, Takashi, Ajki, Masaru, Nagao, Tohru, Fujita, Shinobu S., ...

During the course of our optical deep survey program on L$\alpha$ emitters at $z \approx 5.7$ in the sky area surrounding the quasar SDSSp J104433.04$-$012502.2 at $z=5.74$, we found that a faint...

Subaru Prime Focus Camera -- Suprime-Cam -- (2002)

Miyazaki, Satoshi, Komiyama, Yutaka, Sekiguchi, Maki, Okamura, Sadanori, Doi, Mamoru, Furusawa, Hisanori, ...

We have built an 80-mega pixels (10240 X 8192) mosaic CCD camera, called Suprime-Cam, for the wide-field prime focus of the 8.2 m Subaru telescope. Suprime-Cam covers a field of view 34' X 27', a...

A Search for Lyman alpha Emitters at Redshift 3.7 (2002)

Fujita, Shinobu S., Ajiki, Masaru, Shioya, Yasuhiro, Nagao, Tohru, Murayama, Takashi, Taniguchi, Yoshiaki, ...

We present the results of a survey for emission-line objects based on optical intermediate-band ($\lambda_{\rm c}$ = 5736 \AA ~ and $\Delta\lambda$ = 280 \AA) and broad-band ($B$, $V$, $R$, and...

Galaxy Population in a Cluster of Galaxies around the Radio Galaxy 3C 324 at z=1.2 (2001)

Nakata, Fumiaki, Kajisawa, Masaru, Yamada, Toru, Kodama, Tadayuki, Shimasaku, Kazuhiro, Tanaka, Ichi, ...

We discuss the properties of galaxies around the radio galaxy 3C 324 at z=1.2 based on BVRIK' multi-band imaging data. We have applied a photometric-redshift technique to objects in the 3C 324 field,...

Discovery of Very Extended Emission-Line Region around the Seyfert 2 Galaxy NGC 4388 (2001)

Yoshida, Michitoshi, Yagi, Masafumi, Okamura, Sadanori, Aoki, Kentaro, Ohyama, Youichi, Komiyama, Yutaka, ...

We found a very large, 35 kpc, emission-line region around the Seyfert type 2 galaxy NGC 4388, using deep narrow-band imaging with the prime focus camera (Suprime-Cam) of the Subaru telescope. This...

Statistical Properties of Lyman Break Galaxies at z~4 (2001)

Ouchi, Masami, Shimasaku, Kazuhiro, Okamura, Sadanori, Doi, Mamoru, Furusawa, Hisanori, Hamabe, Masaru, ...

We study the luminosity function and the correlation function of about 1200 z~4 Lyman break galaxies (LBGs) with i' 3 sigma significance level. Interpreting this as being due to galaxy mergers, we...

Probing the evolution of early-type galaxies using multi-colour number counts and redshift distributions (1999)

Nakata, Fumiaki, Shimasaku, Kazuhiro, Doi, Mamoru, Kashikawa, Nobunari, Kawasaki, Wataru, Komiyama, Yutaka, ...

We investigate pure luminosity evolution models for early-type (elliptical and S0) galaxies (i.e., no number density change or morphology transition), and examine whether these models are consistent...

Bovine Plasma Protein C Inhibitor with Structural and Functional Homologous Properties to Human Plasma Protein C Inhibitor (1990)

Suzuki, Koji, Kusumoto, Hiroshi, Nishioka, Junji, Komiyama, Yutaka

Bovine plasma protein C inhibitor was purified; it was then characterized in comparison with human protein C inhibitor. The specific inhibitory activity of the purified inhibitor for bovine activated...

Soluble FcγRIIIaMφ Levels in Plasma Correlate with Carotid Maximum Intima-Media Thickness (IMT) in Subjects Undergoing an Annual Medical Checkup

Masuda, Midori, Amano, Katsuya, Hong, Shi Yan, Nishimura, Noriko, Fukui, Masayoshi, Yoshika, Masamichi, ...

Macrophages play a major role in the development of vascular lesions in atherogenesis. The cells express FcγRIIIa (CD16) identical to that in NK cells, but with a cell type-specific glycosylation,...