High star formation activity in the central region of a distant cluster at z=1.46 (2009)
Hayashi, Masao, Kodama, Tadayuki, Koyama, Yusei, Tanaka, Ichi, Shimasaku, Kazuhiro, Okamura, Sadanori
We present an unbiased deep [OII] emission survey of a cluster XMMXCS J2215.9-1738 at z=1.46, the most distant cluster to date with a detection of extended X-ray emission. With wide-field optical and...
Optical and near-IR spectroscopy of candidate red galaxies in two z~2.5 proto-clusters (2009)
Doherty, Michelle, Tanaka, Masayuki, De Breuck, Carlos, Ly, Chun, Kodama, Tadayuki, Kurk, Jaron, ...
We present a spectroscopic campaign to follow-up red colour-selected candidate massive galaxies in two high redshift proto-clusters surrounding radio galaxies. We observed a total of 57 galaxies in...
Bundy, Kevin, Fukugita, Masataka, Ellis, Richard S., Targett, Thomas A., Belli, Sirio, Kodama, Tadayuki
Using deep infrared observations conducted with the MOIRCS imager on the Subaru Telescope in the northern GOODS field combined with public surveys in GOODS-S, we investigate the dependence on stellar...
Sumiyoshi, Masanao, Totani, Tomonori, Oshige, Shunsuke, Glazebrook, Karl, Akiyama, Masayuki, Morokuma, Tomoki, ...
Efficient selection of emission line galaxies at z > 1 by photometric information in wide field surveys is one of the keys for future spectroscopic surveys to constrain dark energy using the baryon...
Bundy, Kevin, Fukugita, Masataka, Ellis, Richard S., Targett, Thomas A., Belli, Sirio, Kodama, Tadayuki
Using deep infrared observations conducted with the MOIRCS on the Subaru Telescope in GOODS-N combined with public surveys in GOODS-S, we investigate the dependence on stellar mass, M_*, and galaxy...
Sumiyoshi, Masanao, Totani, Tomonori, Oshige, Shunsuke, Glazebrook, Karl, Akiyama, Masayuki, Morokuma, Tomoki, ...
Efficient selection of emission line galaxies at z > 1 by photometric information in wide field surveys is one of the keys for future spectroscopic surveys to constrain dark energy using the baryon...
Sumiyoshi, Masanao, Totani, Tomonori, Oshige, Shunsuke, Glazebrook, Karl, Akiyama, Masayuki, Morokuma, Tomoki, ...
Efficient selection of emission line galaxies at z > 1 by photometric information in wide field surveys is one of the keys for future spectroscopic surveys to constrain dark energy using the baryon...
Koyama, Yusei, Kodama, Tadayuki, Shimasaku, Kazuhiro, Okamura, Sadanori, Tanaka, Masayuki, Lee, Hyung Mok, ...
We present environmental dependence of dusty star forming activity in and around the cluster RXJ1716.4+6708 at z=0.81 based on wide-field and multi-wavelength observations with Suprime-Cam on the...
Discovery of a Giant Lya Emitter Near the Reionization Epoch (2008)
Ouchi, Masami, Ono, Yoshiaki, Egami, Eiichi, Saito, Tomoki, Oguri, Masamune, McCarthy, Patrick J., ...
We report the discovery of a giant Lya emitter (LAE) with a Spitzer/IRAC counterpart near the reionization epoch at z=6.595. The giant LAE is found from the extensive 1 deg^2 Subaru narrow-band...
The SPICA Consortium, Swinyard, Bruce, Nakagawa, Takao, Merken, Patrick, Royer, Pierre, Souverijns, Tim, ...
Ichi Tanaka, Toru Yamada, Alfonso Aragon-Salamanca, Tadayuki Kodama, Takamitsu Miyaji, Kouji Ohta, ...
We previously reported a significant clustering of red galaxies (R \Gamma K = 3:5-- 6) around the radio-loud quasar B2 1335+28 at z = 1:086 (Yamada et al. 1997, Paper I ). In this paper, we establish...
Dependence of the Build-up of the Colour-Magnitude Relation on Cluster Richness at z ~ 0.8 (2007)
Koyama, Yusei, Kodama, Tadayuki, Tanaka, Masayuki, Shimasaku, Kazuhiro, Okamura, Sadanori
We present environmental dependence of the build-up of the colour-magnitude relation (CMR) at z ~ 0.8. It is well established that massive early-type galaxies exhibit a tight CMR in clusters up to at...
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...
A Huge Filamentary Structure at z=0.55 and Star Formation Histories of Galaxies at z (2007)
Tanaka, Masayuki, Hoshi, Takako, Kodama, Tadayuki, Kashikawa, Nobunari
We report a definitive confirmation of a large-scale structure around the super rich cluster CL0016+1609 at z=0.55. We made spectroscopic follow-up observations with FOCAS on Subaru along the large...
Tanaka, Masayuki, Kodama, Tadayuki, Kajisawa, Masaru, Bower, Richard, Demarco, Ricardo, Finoguenov, Alexis, ...
(Abridged) We report a discovery of possible large-scale structures around the RDCS J1252.9-2927 cluster at z=1.24 based on photometric redshifts. We carried out multi-band wide-field imaging with...
Tanaka, Masayuki, Kodama, Tadayuki, Kajisawa, Masaru, Bower, Richard, Demarco, Ricardo, Finoguenov, Alexis, ...
The first appearance of the red sequence of galaxies in proto-clusters at 2 (2007)
Kodama, Tadayuki, Tanaka, Ichi, Kajisawa, Masaru, Kurk, Jaron, Venemans, Bram, De Breuck, Carlos, ...
We explore the evolved galaxy population in the proto-clusters around four high-z radio galaxies at 2 1011Msolar) of the red sequence is well populated by z ~ 2 but much less so in the z ~ 3...
Ly, Chun, Malkan, Matt A., Kashikawa, Nobunari, Shimasaku, Kazuhiro, Doi, Mamoru, Nagao, Tohru, ...
Abridged: Subaru Deep Field line-emitting galaxies in four narrow-band filters at low and intermediate redshifts are presented. Broad-band colors, follow-up optical spectroscopy, and multiple NB...
Deep Extragalactic Surveys around the Ecliptic Poles with AKARI (ASTRO-F) (2006)
Matsuhara, Hideo, Wada, Takehiko, Matsuura, Shuji, Nakagawa, Takao, Kawada, Mitsunobu, Oyama, Youichi, ...
AKARI (formerly ASTRO-F) is an infrared space telescope designed for an all-sky survey at 10-180 (mu)m, and deep pointed surveys of selected areas at 2-180 (mu)m. The deep pointed surveys with AKARI...
Proto-Clusters with Evolved Populations around Radio Galaxies at z~2.5 (2006)
Kajisawa, Masaru, Kodama, Tadayuki, Tanaka, Ichi, Yamada, Toru, Bower, Richard
We report a discovery of proto-cluster candidates around high redshift radio galaxies at z~2.5 on the basis of clear statistical excess of colour-selected galaxies around them seen in the deep...
Deep Extragalactic Surveys around the Ecliptic Poles with AKARI (ASTRO-F) (2006)
Matsuhara, Hideo, Wada, Takehiko, Matsuura, Shuji, Nakagawa, Takao, Kawada, Mitsunobu, Oyama, Youichi, ...
AKARI (formerly ASTRO-F) is an infrared space telescope designed for an all-sky survey at 10-180 (mu)m, and deep pointed surveys of selected areas at 2-180 (mu)m. The deep pointed surveys with AKARI...
Deep Extragalactic Surveys around the Ecliptic Poles with AKARI (ASTRO-F) (2006)
Matsuhara, Hideo, Wada, Takehiko, Matsuura, Shuji, Nakagawa, Takao, Kawada, Mitsunobu, Oyama, Youichi, ...
AKARI (formerly ASTRO-F) is an infrared space telescope designed for an all-sky survey at 10-180 (mu)m, and deep pointed surveys of selected areas at 2-180 (mu)m. The deep pointed surveys with AKARI...
Deep Extragalactic Surveys around the Ecliptic Poles with AKARI (ASTRO-F) (2006)
Matsuhara, Hideo, Wada, Takehiko, Matsuura, Shuji, Nakagawa, Takao, Kawada, Mitsunobu, Oyama, Youichi, ...
AKARI (formerly ASTRO-F) is an infrared space telescope designed for an all-sky survey at 10-180 (mu)m, and deep pointed surveys of selected areas at 2-180 (mu)m. The deep pointed surveys with AKARI...
Spectroscopically Confirmed Large-Scale Structures Associated to a z=0.83 Cluster (2005)
Tanaka, Masayuki, Kodama, Tadayuki, Arimoto, Nobuo, Tanaka, Ichi
(Abridged) We present a discovery of definitive large-scale structures around RXJ0152.7--1352 at z=0.83 based on spectroscopic redshifts. In our previous papers, we reported a photometric...
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...
Hamana, Takashi, Yamada, Toru, Ouchi, Masami, Iwata, Ikuru, Kodama, Tadayuki
We examine masses of hosting haloes of two photometrically-selected high-z galaxy samples: the old passively-evolving galaxies (OPEGs) and Lyman Break Galaxies (LBGs) both taken from the...
Discovery of a Strongly Lensed Galaxy at z=3.9 behind a z=0.83 Galaxy Cluster (2005)
Umetsu, Keiichi, Tanaka, Masayuki, Kodama, Tadayuki, Tanaka, Ichi, Futamase, Toshifumi, Kashikawa, Nobunari, ...
We report the discovery and spectroscopic confirmation of three gravitationally-lensed images of a galaxy at z=3.9 in the background of a distant, rich cluster of galaxies at z=0.83, on the basis of...
The Build-up of the Colour-Magnitude Relation as a Function of Environment (2005)
Tanaka, Masayuki, Kodama, Tadayuki, Arimoto, Nobuo, Okamura, Sadanori, Umetsu, Keiichi, Shimasaku, Kazuhiro, ...
We discuss the environmental dependence of galaxy evolution based on deep panoramic imaging of two distant clusters taken with Suprime-Cam as part of the PISCES project. By combining with the SDSS...
Panoramic Views of Cluster-Scale Assemblies Explored by Subaru Wide-Field Imaging (2005)
Kodama, Tadayuki, Team, The PISCES
We have started PISCES project; a panoramic imaging and spectroscopic survey of distant clusters on Subaru. It exploits the unique wide-field imaging capability of Suprime-Cam, which provides 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 Panoramic Halpha Imaging Survey of the z=0.4 cluster Cl0024.0+1652 with Subaru (2004)
Kodama, Tadayuki, Balogh, Michael, Smail, Ian, Bower, Richard, Nakata, Fumiaki
We employ panoramic, multicolour (BRz') and narrow-band Halpha imaging of the cluster Cl0024.0+1652 (z=0.39) from Subaru covering a ~30 arcmin field, to determine cluster membership and star...
The Mass Assembly History of Galaxies and Clusters of Galaxies (2004)
We discuss the mass assembly history both on cluster and galaxy scales and their impact on galaxy evolution. On cluster scale, we introduce our on-going PISCES project on Subaru, which plans to...
Down-Sizing in Galaxy Formation at z~1 in the Subaru/XMM-Newton Deep Survey (SXDS) (2004)
We use the deep wide-field optical imaging data of the Subaru/XMM-Newton Deep Survey (SXDS) to discuss the luminosity (mass) dependent galaxy colours down to z'=25.0 (5 x 10^9 h_{70}^{-2} Msun) for...
Galaxy Evolution in Three dimensions : Time, Space and Mass (2003)
Kodama, Tadayuki, Bower, Richard, Best, Philip, Hall, Patrick, Yamada, Toru, Tanaka, Masayuki
There are three major axes to describe the evolution of galaxies, namely, time (redshift), space (environment) and mass (stellar mass). In this article, one topic each will be presented along these...
A Slow Merger History of Field Galaxies Since z~1 (2003)
Bundy, Kevin, Fukugita, Masataka, Ellis, Richard S., Kodama, Tadayuki, Conselice, Christopher J.
Using deep infrared observations conducted with the CISCO imager on the Subaru Telescope, we investigate the field-corrected pair fraction and the implied merger rate of galaxies in redshift survey...
The Ks-band Luminosity and Stellar Mass Functions of Galaxies in z~1 Clusters (2003)
Kodama, Tadayuki, Bower, R. G.
We present the near-infrared (Ks-band) luminosity function of galaxies in two z~1 cluster candidates, 3C336 and Q1335+28. A third cluster, 3C289, was observed but found to be contaminated by a...
ERO R1 in CL0939+4713 field - Evidence for an S0-like galaxy at z \sim 1.5 (2002)
Iye, Masanori, Shimasaku, Kazuhiro, Miyazaki, Satoshi, Imanishi, Masatoshi, Kashikawa, Nobunari, Kodama, Tadayuki, ...
We present further observations of the extremely red object ERO J094258+4659.2, identified by \citet{iye00} as ERO R1 in their deep images of the cluster A851. We estimate its redshift independently...
Excursions into the Evolution of Early-Type Galaxies in Clusters (2002)
Lopez-Cruz, Omar, Schade, David, Barrientos, L. Felipe, Gladders, Michael D., Yee, H. K. C., Kodama, Tadayuki
Recent observations have revealed that early-type galaxies (ETG) in clusters comprise an old galaxy population that is evolving passively. We review some recent observations from the ground and from...
Pimbblet, Kevin A., Smail, Ian, Kodama, Tadayuki, Couch, Warrick J., Edge, Alastair C., Zabludoff, Ann I., ...
We present a photometric investigation of the variation in galaxy colour with environment in 11 X-ray-luminous clusters at 0.07 less than or equal to z less than or equal to 0.16 taken from the Las...
Pimbblet, Kevin A., Smail, Ian, Kodama, Tadayuki, Couch, Warrick J., Edge, Alastair C., Zabludoff, Ann I., ...
We present a photometric investigation of the variation in galaxy colour with environment in 11 X-ray-luminous clusters at 0.07 less than or equal to z less than or equal to 0.16 taken from the Las...
Pimbblet, Kevin A., Smail, Ian, Kodama, Tadayuki, Couch, Warrick J., Edge, Alastair C., Zabludoff, Ann I., ...
We present a photometric investigation of the variation in galaxy colour with environment in 11 X-ray-luminous clusters at 0.07 ≤ z ≤ 0.16 taken from the Las Campanas/AAT Rich Cluster Survey. We...
Pimbblet, Kevin A., Smail, Ian, Kodama, Tadayuki, Couch, Warrick J., Edge, Alastair C., Zabludoff, Ann I., ...
We present a photometric investigation of the variation in galaxy colour with environment in 11 X-ray-luminous clusters at 0.07 ≤ z ≤ 0.16 taken from the Las Campanas/AAT Rich Cluster Survey. We...
Pimbblet, Kevin A., Smail, Ian, Kodama, Tadayuki, Couch, Warrick J., Edge, Alastair C., Zabludoff, Ann I., ...
(Abridged) We present a photometric investigation of the variation in galaxy colour with environment in 11 X-ray luminous clusters at 0.07
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,...
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...
Testing the Hypothesis of the Morphological Transformation from Field Spiral to Cluster S0 (2000)
Hubble Space Telescope observations of distant clusters have suggested a steep increase in the proportion of S0 galaxies between clusters at high redshifts and similar systems the present-day. It has...
Origin of Color Gradients in Elliptical Galaxies (2000)
Tamura, Naoyuki, Kobayashi, Chiaki, Arimoto, Nobuo, Kodama, Tadayuki, Ohta, Kouji
The origin of color gradients in elliptical galaxies is examined by comparing model gradients with those observed in the Hubble Deep Field. The models are constructed so as to reproduce color...
Tanaka, Ichi, Yamada, Toru, Aragón-Salamanca, Alfonso, Kodama, Tadayuki, Miyaji, Takamitsu, Ohta, Kouji, ...
We previously reported a significant clustering of red galaxies (R-K=3.5--6) around the radio-loud quasar B2 1335+28 at z=1.086. In this paper, we establish the existence of a rich cluster at the...
The Colour-Magnitude Relation of Early-Type Galaxies in the Hubble Deep Field (1998)
Kodama, Tadayuki, Bower, Richard G., Bell, Eric F.
We present the rest-frame colour-magnitude diagram for 35 early-type galaxies in the Hubble Deep Field with median redshift 0.9. Although with considerable scatter, a red sequence well-described by...
The Formation History of Early-Type Galaxies: An Observational Perspective (1998)
Bower, Richard G., Terlevich, Ale, Kodama, Tadayuki, Caldwell, Nelson
This talk investigates the formation of early-type galaxies from a deliberately observational view point. I begin by reviewing the conclusions that can be reached by comparing the detailed properties...
A Bayesian Classifier for Photometric Redshifts: Identification of high redshift clusters (1998)
Kodama, Tadayuki, Bell, Eric F., Bower, Richard G.
Photometric redshift classifiers provide a means of estimating galaxy redshifts from observations using a small number of broad-band filters. However, the accuracy with which redshifts can be...
Secondary Episode of Star Formation in Elliptical Galaxies (1998)
Kodama, Tadayuki, Arimoto, Nobuo
We put upper limits of secondary burst of star formation in elliptical galaxies of the Gonzalez's (1993) sample, most of which locates in small groups, based on the colour dispersion around the U-V...
The Colour-Magnitude Relation as a Constraint on the Formation of Rich Cluster Galaxies (1998)
Bower, Richard G., Kodama, Tadayuki, Terlevich, Ale
In this paper, we examine the role that the colour-magnitude relation (CMR) can play in constraining the formation history of rich cluster galaxies. Firstly, we consider the colour evolution of...
Origin of the colour-magnitude relation of elliptical galaxies (1996)
Kodama, Tadayuki, Arimoto, Nobuo
Evolutionary models of elliptical galaxies are constructed by using a new population synthesis code. Model parameters are calibrated to reproduce the observed colour-magnitude (CM) relation of Coma...