230 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- The University of TokyoJP139 papers
- Kavli Institute for the Physics and Mathematics of the UniverseJP42 papers
- Kyoto UniversityJP36 papers
- High Energy Accelerator Research OrganizationJP31 papers
- Nagoya UniversityJP31 papers
- Kobe UniversityJP30 papers
- The University of OsakaJP27 papers
- Tsinghua UniversityCN27 papers
- University of California, IrvineUS27 papers
- Duke UniversityUS26 papers
- Stony Brook UniversityUS26 papers
- Universidad Autónoma de MadridES25 papers
25 papers · 1 filter
Serendipitous Discovery of an Optically-Dark Ultra-Luminous Infrared Galaxy at = 3.4
N. H. Hayatsu, Zhi-Yu Zhang, R. J. Ivison +10
Dusty, submillimeter-selected galaxies without optical counterparts contribute a non-negligible fraction of the star formation in the early universe. However, such a population is…
Radiation-driven dusty outflows from early galaxies
Yurina Nakazato, Andrea Ferrara
The James Webb Space Telescope (JWST) has discovered an overabundance of UV-bright (), massive galaxies at in comparison to pre-JWST theoret…
The ALMA-CRISTAL survey: Dust temperature and physical conditions of the interstellar medium in a typical galaxy at z=5.66
V. Villanueva, R. Herrera-Camus, J. Gonzalez-Lopez +25
We present new m dust continuum observations from the ALMA of HZ10 (CRISTAL-22), a dusty main-sequence galaxy at =5.66 as part of the [CII] Resolved Ism in…
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 …
Identification of 40 gravitationally magnified stars in a galaxy at redshift of 0.725
Yoshinobu Fudamoto, Fengwu Sun, Jose M. Diego +44
Strong gravitational magnifications enable to detect faint background sources, resolve their internal structures, and even identify individual stars in distant galaxies. Highly mag…
A luminous and young galaxy at z=12.33 revealed by a JWST/MIRI detection of Hα and [OIII]
Jorge A. Zavala, Marco Castellano, Hollis B. Akins +37
The James Webb Space Telescope (JWST) has discovered a surprising population of bright galaxies in the very early universe (<500 Myrs after the Big Bang) that is hard to explain wi…
Machine learning detects multiplicity of the first stars in stellar archaeology data
Tilman Hartwig, Miho N. Ishigaki, Chiaki Kobayashi +2
In unveiling the nature of the first stars, the main astronomical clue is the elemental compositions of the second generation of stars, observed as extremely metal-poor (EMP) stars…
Detection of stellar light from quasar host galaxies at redshifts above 6
Xuheng Ding, Masafusa Onoue, John D. Silverman +41
The detection of starlight from the host galaxies of quasars during the reionization epoch () has been elusive, even with deep HST observations. The current highest redshift q…
Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). III. Discovery of a z = 4.72 Radio Galaxy with Lyman Break Technique
Takuji Yamashita, Tohru Nagao, Hiroyuki Ikeda +17
We report a discovery of radio galaxy, HSC J083913.17+011308.1, by using the Lyman break technique with the Hyper Suprime-Cam Subaru Strategic Survey (HSC-SSP) catalog f…
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…
ALMA band 8 observations of DLA2233+131 at z=3.150
Kazuyuki Ogura, Hideki Umehata, Yoshiaki Taniguchi +8
We present our ALMA Band 8 observations of a damped Ly absorption (DLA) system at =3.150 observed in the spectrum of the quasar Q2233+131 at =3.295. The optical counterpar…
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…
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…
The metal enrichment of passive galaxies in cosmological simulations of galaxy formation
Takashi Okamoto, Masahiro Nagashima, Cedric G. Lacey +1
Massive early-type galaxies have higher metallicities and higher ratios of elements to iron than their less massive counterparts. Reproducing these correlations has long been a…
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…
The Impact of Dust in Host Galaxies on Quasar Luminosity Functions
Hikari Shirakata, Takashi Okamoto, Motohiro Enoki +4
We have investigated effects of dust attenuation on quasar luminosity functions using a semi-analytic galaxy formation model combined with a large cosmological N-body simulation. W…