273 citations · 1.1k across the 31 of their papers we have counts for
24 papers · 1 filter
The origin of the metallicity difference between star-forming and passive galaxies: Insights from ν2GC semi-analytic model
Qiansheng Liu, Takashi Okamoto, Taira Oogi +1
We investigate the origin of the observed metallicity difference between star-forming and passive galaxies using the semi-analytic galaxy formation model nu2GC. Our fiducial model…
The Halo Occupation Distribution Modeling of the X-ray-selected AGNs at 0.6 < z < 2.6 in the COSMOS field
Hiroyuki Ikeda, Takamitsu Miyaji, Taira Oogi +6
We conducted precise measurements of Active Galactic Nuclei (AGNs) clustering at and by measuring the two-point cross-correlation function (CCF) between galaxies…
The evolution of supermassive blackhole mass--bulge mass relation by a semi-analytic model, GC
Tatsuki Shimizu, Taira Oogi, Takashi Okamoto +2
We have investigated the redshift evolution of the relationship between supermassive black hole (SMBH) mass and host bulge mass using a semi-analytical galaxy formation model …
AGN properties of ~1 million member galaxies of galaxy groups and clusters at z < 1.4 based on the Subaru Hyper Suprime-Cam survey
Yoshiki Toba, Aoi Hashiguchi, Naomi Ota +17
Herein, we present the statistical properties of active galactic nuclei (AGNs) for approximately 1 million member galaxies of galaxy groups and clusters, with 0.1 cluster redsh…
Black hole mass and Eddington ratio distributions of less-luminous quasars at in the Subaru Hyper Suprime-Cam Wide field
Wanqiu He, Masayuki Akiyama, Motohiro Enoki +11
We investigate the black hole mass function (BHMF) and Eddington ratio distribution function (ERDF) of broad-line AGNs at z=4, based on a sample of 52 quasars with i<23.2 at 3.50 <…
AGN number fraction in galaxy groups and clusters at z < 1.4 from the Subaru Hyper Suprime-Cam survey
Aoi Hashiguchi, Yoshiki Toba, Naomi Ota +20
One of the key questions on active galactic nuclei (AGN) in galaxy clusters is how AGN could affect the formation and evolution of member galaxies and galaxy clusters in the histor…
Quasar Luminosity Function at z = 7
Yoshiki Matsuoka, Masafusa Onoue, Kazushi Iwasawa +41
We present the quasar luminosity function (LF) at , measured with 35 spectroscopically confirmed quasars at . The sample of 22 quasars from the Subaru High-…
Uchuu-GC galaxies and AGN: Cosmic variance forecasts of high-redshift AGN for JWST, Euclid, and LSST
Taira Oogi, Tomoaki Ishiyama, Francisco Prada +10
Measurements of the luminosity function of active galactic nuclei (AGN) at high redshift () are expected to suffer from field-to-field variance, including cosmic and Po…
Dark matter halos of luminous AGNs from galaxy-galaxy lensing with the HSC Subaru Strategic Program
Wentao Luo, John D. Silverman, Surhud More +12
We assess the dark matter halo masses of luminous AGNs over the redshift range 0.2 to 1.2 using galaxy-galaxy lensing based on imaging data from the Hyper Suprime-Cam Subaru Strate…
Revisiting Soltan's argument based on a semi-analytical model for galaxy and black hole evolution
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto +2
We show the significance of the super-Eddington accretion for the cosmic growth of supermassive black holes (SMBHs) with a semi-analytical model for galaxy and black hole evolution…
Quantifying the effect of field variance on the H luminosity function with the New Numerical Galaxy Catalogue (GC)
Kazuyuki Ogura, Masahiro Nagashima, Rhythm Shimakawa +9
We construct a model of H emitters (HAEs) based on a semi-analytic galaxy formation model, the New Numerical Galaxy Catalog (GC). In this paper, we report our estimate for…
The Subaru HSC Galaxy Clustering with Photometric Redshift I: Dark Halo Masses Versus Baryonic Properties of Galaxies at 0.3<z<1.4
Shogo Ishikawa, Nobunari Kashikawa, Masayuki Tanaka +8
We present the clustering properties of low- galaxies selected by the Hyper Suprime-Cam Subaru Strategic Program Wide layer over deg. The wide-field and…
Semi-analytic modelling of AGNs: auto-correlation function and halo occupation
Taira Oogi, Hikari Shirakata, Masahiro Nagashima +5
The spatial clustering of active galactic nuclei (AGNs) is considered to be one of the important diagnostics for the understanding of the underlying processes behind their activiti…
Slowing down of cosmic growth of supermassive black holes: Theoretical prediction of the Eddington ratio distribution
Hikari Shirakata, Toshihiro Kawaguchi, Taira Oogi +2
We show the Eddington ratio distributions of supermassive black holes at a wide redshift range (0 < z < 8) obtained with a semi-analytic model of galaxy formation. The distribution…
New constraints on red-spiral galaxies from their kinematics in clusters of galaxies
Akinari Hamabata, Taira Oogi, Masamune Oguri +2
The distributions of the pairwise line-of-sight velocity between galaxies and their host clusters are segregated according to the galaxy's colour and morphology. We investigate the…
The New Numerical Galaxy Catalogue (ν^2 GC): Properties of Active Galactic Nuclei and Their Host Galaxies
Hikari Shirakata, Takashi Okamoto, Toshihiro Kawaguchi +7
We present the latest results of a semi-analytic model of galaxy formation, "New Numerical Galaxy Catalogue", which is combined with large cosmological N-body simulations. This mod…
ALMA 26 Arcmin Survey of GOODS-S at One-millimeter (ASAGAO): Average Morphology of High- Dusty Star-Forming Galaxies is an Exponential-Disk ()
Seiji Fujimoto, Masami Ouchi, Kotaro Kohno +24
We present morphological properties of dusty star-forming galaxies at z=1-3 determined with high-resolution (FWHM~0"19) Atacama Large Milllimeter/submilimeter Array (ALMA) 1-mm ban…
Imprints of the super-Eddington accretion on the quasar clustering
Taira Oogi, Motohiro Enoki, Tomoaki Ishiyama +5
Super-Eddington mass accretion has been suggested as an efficient mechanism to grow supermassive black holes (SMBHs). We investigate the imprint left by the radiative efficiency of…
Clustering of quasars in a wide luminosity range at redshift 4 with Subaru Hyper Suprime-Cam wide field imaging
Wanqiu He, Masayuki Akiyama, James Bosch +25
We examine the clustering of quasars over a wide luminosity range, by utilizing 901 quasars at with photometrically se…
Clustering of infrared-bright dust-obscured galaxies revealed by the Hyper Suprime-Cam and WISE
Yoshiki Toba, Tohru Nagao, Masaru Kajisawa +20
We present measurements of the clustering properties of a sample of infrared (IR) bright dust-obscured galaxies (DOGs). Combining 125 deg of wide and deep optical images obtain…
Theoretical reevaluations of the black hole mass - bulge mass relation - I. Effect of the seed black hole mass
Hikari Shirakata, Toshihiro Kawaguchi, Takashi Okamoto +7
We explore the effect of varying the mass of the seed black hole on the resulting black hole mass - bulge mass relation at z ~ 0, using a semi-analytic model of galaxy formation co…
Quasar clustering in a galaxy and quasar formation model based on ultra high-resolution N-body simulations
Taira Oogi, Motohiro Enoki, Tomoaki Ishiyama +3
We investigate clustering properties of quasars using a new version of our semi-analytic model of galaxy and quasar formation with state-of-the-art cosmological N-body simulations.…
Mass and size growth of early-type galaxies by dry mergers in cluster environments
Taira Oogi, Asao Habe, Tomoaki Ishiyama
We perform dry merger simulations to investigate the role of dry mergers in the size growth of early-type galaxies in high density environments. We replace the virialized dark matt…
The New Numerical Galaxy Catalog (GC): An Updated Semi-analytic Model of Galaxy and AGN with Large Cosmological N-body Simulation
Ryu Makiya, Motohiro Enoki, Tomoaki Ishiyama +6
We present a new cosmological galaxy formation model, GC, as an updated version of our previous model GC. We adopt the so-called "semi-analytic" approach, in which the form…