Nishimichi, Takahiro, Shirata, Akihito, Taruya, Atsushi, Yahata, Kazuhiro, Saito, Shun, Suto, Yasushi, ...
We use a series of cosmological N-body simulations and various analytic models to study the evolution of matter power spectrum in a \Lambda Cold Dark Matter universe. We compare the results of N-body...
Kawahara, Hajime, Reese, Erik D., Kitayama, Tetsu, Sasaki, Shin, Suto, Yasushi
Our previous analysis indicates that small-scale fluctuations in the intracluster medium (ICM) from cosmological hydrodynamic simulations follow the lognormal distribution. In order to test the...
Measurement of the Spin-Orbit Angle of Exoplanet HAT-P-1b (2008)
Johnson, John A., Winn, Joshua N., Narita, Norio, Enya, Keigo, Williams, Peter K. G., Marcy, Geoffrey W., ...
We present new spectroscopic and photometric observations of the HAT-P-1 planetary system. Spectra obtained during three transits exhibit the Rossiter-McLaughlin effect, allowing us to measure the...
The Prograde Orbit of Exoplanet TrES-2b (2008)
Winn, Joshua N., Johnson, John Asher, Narita, Norio, Suto, Yasushi, Turner, Edwin L., Fischer, Debra A., ...
We monitored the Doppler shift of the G0V star TrES-2 throughout a transit of its giant planet. The anomalous Doppler shift due to stellar rotation (the Rossiter-McLaughlin effect) is discernible in...
Simulations of Baryon Acoustic Oscillations I: Growth of Large-Scale Density Fluctuations (2008)
Takahashi, Ryuichi, Yoshida, Naoki, Matsubara, Takahiko, Sugiyama, Naoshi, Kayo, Issha, Nishimichi, Takahiro, ...
We critically examine how well the evolution of large-scale density perturbations is followed in cosmological $N$-body simulations. We first run a large volume simulation and perform a mode-by-mode...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
The sixth data release of the sloan digital sky survey (2008)
Adelman-McCarthy, Jennifer K., Agüros, Marcel A., Allam, Sahar S., Allende Prieto, Carlos, Anderson, Kurt S. J., Anderson, Scott F., ...
The sixth data release of the Sloan Digital Sky Survey (2008)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Prieto, Carlos Alende, Anderson, Kurt S. J., Anderson, Scott F., ...
This paper describes the Sixth Data Release of the Sloan Digital Sky Survey. With this data release, the imaging of the northern Galactic cap is now complete. The survey contains images and...
Liu, Xin, Turner, Edwin L., Narita, Norio, Suto, Yasushi, Winn, Joshua N., Yamada, Toru, ...
We present a new technique for detecting scattered starlight from transiting, close-orbiting extrasolar giant planets (CEGPs) that has the virtues of simplicity, robustness, linearity, and...
Spin-Orbit Alignment for the Eccentric Exoplanet HD 147506b (2007)
Winn, Joshua N., Johnson, John Asher, Peek, Kathryn M. G., Marcy, Geoffrey W., Bakos, Gaspar A., Enya, Keigo, ...
The short-period exoplanet HD 147506b (also known as HAT-P-2b) has an eccentric orbit, raising the possibility that it migrated through planet-planet scattering or Kozai oscillations accompanied by...
Systematic Errors in the Hubble Constant Measurement from the Sunyaev-Zel'dovich effect (2007)
Kawahara, Hajime, Kitayama, Tetsu, Sasaki, Shin, Suto, Yasushi
The Hubble constant estimated from the combined analysis of the Sunyaev-Zel'dovich effect and X-ray observations of galaxy clusters is systematically lower than those from other methods by 10-15...
Nishimichi, Takahiro, Ohmuro, Hiroshi, Nakamichi, Masashi, Taruya, Atsushi, Yahata, Kazuhiro, Shirata, Akihito, ...
An acoustic oscillation of the primeval photon-baryon fluid around the decoupling time imprints a characteristic scale in the galaxy distribution today, known as the baryon acoustic oscillation (BAO)...
Shirata, Akihito, Suto, Yasushi, Hikage, Chiaki, Shiromizu, Tetsuya, Yoshida, Naoki
We explore observational constraints on possible deviations from Newtonian gravity by means of large-scale clustering of galaxies. We measure the power spectrum and the bispectrum of Sloan Digital...
Yamamoto, Kazuhiro, Parkinson, David, Hamana, Takashi, Nichol, Robert C., Suto, Yasushi
We consider the extent to which future imaging surveys of galaxies can distinguish between dark energy and modified gravity models for the origin of the cosmic acceleration. Dynamical dark energy...
Measurement of the Rossiter--McLaughlin Effect in the Transiting Exoplanetary System TrES-1 (2007)
Narita, Norio, Enya, Keigo, Sato, Bun'ei, Ohta, Yasuhiro, Winn, Joshua N., Suto, Yasushi, ...
We report a measurement of the Rossiter--McLaughlin effect in the transiting extrasolar planetary system TrES-1, via simultaneous spectroscopic and photometric observations with the Subaru and MAGNUM...
Nishimichi, Takahiro, Kayo, Issha, Hikage, Chiaki, Yahata, Kazuhiro, Taruya, Atsushi, Jing, Yi Peng, ...
The fifth data release of the sloan digital sky survey (2007)
Adelman-McCarthy, Jennifer K., Agüeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
The fifth data release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
The Fifth Data Release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
The Fifth Data Release of the Sloan Digital Sky Survey (2007)
Adelman-McCarthy, Jennifer K., Agueeros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fifth Data Release (DR5) of the Sloan Digital Sky Survey (SDSS). DR5 includes all survey quality data taken through 2005 June and represents the completion of the SDSS-I...
Winn, Joshua N., Holman, Matthew J., Henry, Gregory W., Roussanova, Anna, Enya, Keigo, Yoshii, Yuzuru, ...
We present photometry of HD 189733 during eight transits of its close-in giant planet, and out-of-transit photometry spanning two years. Using the transit photometry, we determine the stellar and...
Ohta, Yasuhiro, Taruya, Atsushi, Suto, Yasushi
We present theoretical predictions for photometric and spectroscopic signatures of rings around transiting extrasolar planets. On the basis of a general formulation for the transiting signature in...
Kawahara, Hajime, Suto, Yasushi, Kitayama, Tetsu, Sasaki, Shin, Shimizu, Mamoru, Rasia, Elena, ...
The origin of the recently reported systematic bias in the spectroscopic temperature of galaxy clusters is investigated using cosmological hydrodynamical simulations. We find that the local...
The dependence of dark halo clustering on the formation epoch and the concentration parameter (2006)
Jing, Y. P., Suto, Yasushi, Mo, H. J.
We examine the age-dependence of dark matter halo clustering in an unprecedented accuracy using a set of 7 high-resolution cosmological simulations each with $N=1024^3$ particles. We measure the bias...
Nishimichi, Takahiro, Kayo, Issha, Hikage, Chiaki, Yahata, Kazuhiro, Taruya, Atsushi, Jing, Y. P., ...
We consider nonlinear biasing models of galaxies with particular attention to a correlation between linear and quadratic biasing coefficients, b_1 and b_2. We first derive perturbative expressions...
Measurement of the Spin-Orbit Alignment in the Exoplanetary System HD 189733 (2006)
Winn, Joshua N., Johnson, John A., Marcy, Geoffrey W., Butler, R. Paul, Vogt, Steven S., Henry, Gregory W., ...
We present spectroscopy of a transit of the exoplanet HD 189733b. By modeling the Rossiter-McLaughlin effect (the anomalous Doppler shift due to the partial eclipse of the rotating stellar surface),...
The effect of FIR emission from SDSS galaxies on the SFD Galactic extinction map (2006)
Yahata, Kazuhiro, Yonehara, Atsunori, Suto, Yasushi, Turner, Edwin L., Broadhurst, Tom, Finkbeiner, Douglas P.
We compare the most successful and widely used map of Galactic dust extinction, provided by Schlegel, Finkbeiner & Davis (1998; hereafter SFD), to the galaxy number counts in the Sloan Digital Sky...
Yamamoto, Kazuhiro, Bassett, Bruce A., Nichol, Robert C., Suto, Yasushi, Yahata, Kazuhiro
We discuss how the baryon acoustic oscillation (BAO) signatures in the galaxy power spectrum can distinguish between modified gravity and the cosmological constant as the source of cosmic...
Extrasolar Transiting Planet Search with Subaru Suprime-Cam (2006)
Urakawa, Seitaro, Yamada, Toru, Suto, Yasushi, Turner, Edwin. L., Itoh, Yoichi, Mukai, Tadashi, ...
We report the results of a prototype photometric search for transiting extrasolar planets using Subaru Suprime-Cam. Out of about 100,000 stars monitored around the Galactic plane (l=90 degree,b=0...
Shimizu, Mamoru, Kitayama, Tetsu, Sasaki, Shin, Suto, Yasushi
We revisit the estimate of the mass fluctuation amplitude, sigma_8, from the observational X-ray cluster abundance. In particular, we examine the effect of the systematic difference between the...
The fourth data release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
The fourth data release of the Sloan Digital Sky Survey (2006)
Adelman-McCarthy, Jennifer K., Agueros, Marcel A., Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, ...
This paper describes the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), including all survey-quality data taken through 2004 June. The data release includes five-band photometric data...
Discovery of Multiply Imaged Galaxies behind the Cluster and Lensed Quasar SDSS J1004+4112 (2005)
Sharon, Keren, Ofek, Eran O., Smith, Graham P., Broadhurst, Tom J., Maoz, Dan, Kochanek, Christopher S., ...
We have identified three multiply imaged galaxies in Hubble Space Telescope images of the redshift z=0.68 cluster responsible for the large-separation quadruply lensed quasar, SDSS J1004+4112....
Topology Analysis of the Sloan Digital Sky Survey: I. Scale and Luminosity Dependences (2005)
Park, Changbom, Choi, Yun-Young, Vogeley, Michael, Gott III, J. Richard, Kim, Juhan, Hikage, Chiaki, ...
We measure the topology of volume-limited galaxy samples selected from a parent sample of 314,050 galaxies in the Sloan Digital Sky Survey(SDSS), which is now complete enough to describe the fully...
Fourier Phase Analysis of SDSS Galaxies (2005)
Hikage, Chiaki, Matsubara, Takahiko, Suto, Yasushi, Park, Changbom, Szalay, Alexander S., Brinkmann, Jon
We present a first analysis of the clustering of SDSS galaxies using the distribution function of the sum of Fourier phases. This statistic was recently proposed by one of authors as a new method to...
Lee, Jounghun, Jing, Yipeng, Suto, Yasushi
We present an analytic expression for the axis ratio distribution of triaxial dark matter halos driven from physical principles. Adopting the picture of triaxial collapse based on the Zel'dovich...
Soft X-ray Transmission Spectroscopy of Warm/Hot Intergalactic Medium with XEUS (2005)
Kawahara, Hajime, Yoshikawa, Kohji, Sasaki, Shin, Suto, Yasushi, Kawai, Nobuyuki, Mitsuda, Kazuhisa, ...
We discuss the detectability of Warm/Hot Intergalactic medium (WHIM) via the absorption lines toward bright point sources with a future X-ray satellite mission, XEUS. While we consider bright QSOs as...
Subaru HDS Transmission Spectroscopy of the Transiting Extrasolar Planet HD 209458b (2005)
Narita, Norio, Suto, Yasushi, Winn, Joshua N., Turner, Edwin L., Aoki, Wako, Leigh, Christopher J., ...
We have searched for absorption in several common atomic species due to the atmosphere or exosphere of the transiting extrasolar planet HD 209458b, using high precision optical spectra obtained with...
Measurement of Spin-Orbit Alignment in an Extrasolar Planetary System (2005)
Winn, Joshua N., Noyes, Robert W., Holman, Matthew J., Charbonneau, David, Ohta, Yasuhiro, Taruya, Atsushi, ...
We determine the stellar, planetary, and orbital properties of the transiting planetary system HD 209458, through a joint analysis of high-precision radial velocities, photometry, and timing of the...
Galaxy clustering constraints on deviations from Newtonian gravity at cosmological scales (2005)
Shirata, Akihito, Shiromizu, Tetsuya, Yoshida, Naoki, Suto, Yasushi
In spite of the growing observational evidence for dark matter and dark energy in the universe, their physical nature is largely unknown. In fact, several authors have proposed modifications of...
Yahata, Kazuhiro, Suto, Yasushi, Kayo, Issha, Matsubara, Takahiko, Connolly, Andrew, Berk, Daniel Vanden, ...
We report the first result of the clustering analysis of Sloan Digital Sky Survey (SDSS) quasars. We compute the two-point correlation function (2PCF) of SDSS quasars in redshift space at...
Ohta, Yasuhiro, Taruya, Atsushi, Suto, Yasushi
A transiting extrasolar planet sequentially blocks off the light coming from the different parts of the disk of the host star in a time dependent manner. Due to the spin of the star, this produces an...
Measuring our Universe from Galaxy Redshift Surveys (2004)
Galaxy redshift surveys have achieved significant progress over the last couple of decades. Those surveys tell us in the most straightforward way what our local Universe looks like. While the galaxy...
Winn, Joshua N., Suto, Yasushi, Turner, Edwin L., Narita, Norio, Frye, Brenda L., Aoki, Wako, ...
There is evidence that the transiting planet HD 209458b has a large exosphere of neutral hydrogen, based on a 15% decrement in Lyman-alpha flux that was observed by Vidal-Madjar et al. during...
Kayo, Issha, Suto, Yasushi, Nichol, Robert C., Pan, Jun, Szapudi, Istvan, Connolly, Andrew J., ...
We present measurements of the redshift--space three-point correlation function of galaxies in the Sloan Digital Sky Survey (SDSS). For the first time, we analyze the dependence of this statistic on...
Searching for cosmic missing baryons with DIOS -- Diffuse Intergalactic Oxygen Surveyor -- (2004)
Suto, Yasushi, Yoshikawa, Kohji, Yamasaki, Noriko Y., Mitsuda, Kazuhisa, Fujimoto, Ryuichi, Furusho, Tae, ...
Approximately 30 to 50 percent of the total baryons in the present universe is supposed to take a form of warm/hot intergalactic medium (WHIM) whose X-ray continuum emission is very weak. In order to...
Oguri, Masamune, Inada, Naohisa, Keeton, Charles R., Pindor, Bartosz, Hennawi, Joseph F., Gregg, Michael D., ...
We study the recently discovered gravitational lens SDSS J1004+4112, the first quasar lensed by a cluster of galaxies. It consists of four images with a maximum separation of 14.62". The system was...
Minkowski Functionals of SDSS galaxies I : (2003)
Chiaki Hikage, Jens Schmalzing, Thomas Buchert, Yasushi Suto, Issha Kayo, Atsushi Taruya, ...
We present a rst morphometric investigation of a preliminary sample from the SDSS of 154287 galaxies with apparent magnitude 14:5 < m r < 17:5 and redshift 0:001 < z < 0:4. We measure the Minkowski...
Simulations of Large-Scale Structure in the New Millennium (2003)
Simulations of large-scale structure in the universe have played a vital role in observational cosmology since 1980's in particular. Their important role will definitely continue to be true in the...
Monte-Carlo Modeling of Non-Gravitational Heating Processes in Galaxy Clusters (2003)
Shimizu, Mamoru, Kitayama, Tetsu, Sasaki, Shin, Suto, Yasushi
We consider non-gravitational heating effects on galaxy clusters on the basis of the Monte-Carlo modeling of merging trees of dark matter halos combined with the thermal evolution of gas inside each...
Measuring our universe from galaxy redshift surveys (2003)
Galaxy redshift surveys have achieved significant progress over the last couple of decades. Those surveys tell us in the most straightforward way what our local universe looks like. While the galaxy...
Hikage, Chiaki, Matsubara, Takahiko, Suto, Yasushi
We explore a signature of phase correlations in Fourier modes of dark matter density fields induced by nonlinear gravitational clustering. We compute the distribution function of the phase sum of the...
Hamana, Takashi, Ouchi, Masami, Shimasaku, Kazuhiro, Kayo, Issha, Suto, Yasushi
We explore empirical relations between three different populations of high-redshift galaxies and their hosting dark halos employing the halo model approach. Specifically we consider Lyman-break...
While the use of galaxy clusters as {\it tools} to probe cosmology is established, their conventional description still relies on the spherical and/or isothermal models that were proposed more than...
Oguri, Masamune, Lee, Jounghun, Suto, Yasushi
Statistics of lensed arcs in clusters of galaxies serve as a powerful probe of both the non-sphericity and the inner slope of dark matter halos. We develop a semi-analytic method to compute the...
Modeling peculiar velocities of dark matter halos (2003)
Hamana, Takashi, Kayo, Issha, Yoshida, Naoki, Suto, Yasushi, Jing, Y. P.
We present a simple model that accurately describes various statistical properties of peculiar velocities of dark matter halos. We pay particular attention to the following two effects; first, the...
Minkowski Functionals of SDSS galaxies I : Analysis of Excursion Sets (2003)
Hikage, Chiaki, Schmalzing, Jens, Buchert, Thomas, Suto, Yasushi, Kayo, Issha, Taruya, Atsushi, ...
We present a first morphometric investigation of a preliminary sample from the SDSS of 154287 galaxies with apparent magnitude 14.5
Detectability of the Warm/Hot Intergalactic Medium Through Emission Lines of OVII and OVIII (2003)
Yoshikawa, Kohji, Yamasaki, Noriko Y., Suto, Yasushi, Ohashi, Takaya, Mitsuda, Kazuhisa, Tawara, Yuzuru, ...
Most of cosmic baryons predicted by the big-bang nucleosynthesis has evaded the direct detection. Recent numerical simulations indicate that approximately 30 to 50 percent of the total baryons in the...
Biasing and Genus Statistics of Dark Matter Halos in the Hubble Volume Simulation (2003)
Hikage, Chiaki, Taruya, Atsushi, Suto, Yasushi
We present a numerical analysis of genus statistics for dark matter halo catalogs from the Hubble volume simulation. The huge box-size of the Hubble volume simulation enables us to carry out a...