Search Results - "Ono, Yoshiaki"
-
1
A Comprehensive Study of Galaxies at z ∼ 9–16 Found in the Early JWST Data: Ultraviolet Luminosity Functions and Cosmic Star Formation History at the Pre-reionization Epoch
Published in The Astrophysical journal. Supplement series (01-03-2023)“…Abstract We conduct a comprehensive study on dropout galaxy candidates at z ∼ 9–16 using the first 90 arcmin 2 James Webb Space Telescope (JWST) Near Infrared…”
Get full text
Journal Article -
2
Full-data Results of Hubble Frontier Fields: UV Luminosity Functions at z ∼ 6-10 and a Consistent Picture of Cosmic Reionization
Published in The Astrophysical journal (10-02-2018)“…We present UV luminosity functions of dropout galaxies at with the complete Hubble Frontier Fields data. We obtain a catalog of ∼450 dropout-galaxy candidates…”
Get full text
Journal Article -
3
A JWST/NIRSpec First Census of Broad-line AGNs at z = 4–7: Detection of 10 Faint AGNs with M BH ∼ 106–108 M ⊙ and Their Host Galaxy Properties
Published in The Astrophysical journal (01-12-2023)“…We present the first statistical sample of faint type 1 AGNs at z > 4 identified by JWST/NIRSpec deep spectroscopy. Among the 185 galaxies at z _spec = 3.8–8.9…”
Get full text
Journal Article -
4
JWST Census for the Mass–Metallicity Star Formation Relations at z = 4–10 with Self-consistent Flux Calibration and Proper Metallicity Calibrators
Published in The Astrophysical journal. Supplement series (01-12-2023)“…Abstract We present the evolution of the mass–metallicity (MZ) relation at z = 4–10 derived with 135 galaxies identified in JWST/NIRSpec data taken from the…”
Get full text
Journal Article -
5
Singlet Even-Frequency and Triplet Odd-Frequency Superconductivity in the Two-Band Hubbard Model Based on the Dynamical Mean-Field Theory
Published in Journal of the Physical Society of Japan (15-04-2024)“…Superconductivity in the two-band Hubbard model characterized by the on-site Coulomb repulsion Ud at d-site and the charge-transfer energy Δ between d- and…”
Get full text
Journal Article -
6
-
7
-
8
Early Low-mass Galaxies and Star-cluster Candidates at z ∼ 6-9 Identified by the Gravitational-lensing Technique and Deep Optical/Near-infrared Imaging
Published in The Astrophysical journal (01-04-2020)“…We present very faint dropout galaxies at z ∼ 6−9 with a stellar mass M down to that are found in deep optical/near-infrared (NIR) images of the full data sets…”
Get full text
Journal Article -
9
Morphologies of Galaxies at z ≳ 9 Uncovered by JWST/NIRCam Imaging: Cosmic Size Evolution and an Identification of an Extremely Compact Bright Galaxy at z ∼ 12
Published in The Astrophysical journal (01-07-2023)“…Abstract We present morphologies of galaxies at z ≳ 9 resolved by JWST/NIRCam 2–5 μ m imaging. Our sample consists of 22 galaxy candidates identified by…”
Get full text
Journal Article -
10
EMPRESS. VII. Ionizing Spectrum Shapes of Extremely Metal-poor Galaxies: Uncovering the Origins of Strong He ii and the Impact on Cosmic Reionization
Published in The Astrophysical journal (01-05-2022)“…Abstract Strong high-ionization lines such as He ii of young galaxies are puzzling at high and low redshift. Although recent studies suggest the existence of…”
Get full text
Journal Article -
11
Redshift Evolution of Electron Density in the Interstellar Medium at z ∼ 0–9 Uncovered with JWST/NIRSpec Spectra and Line-spread Function Determinations
Published in The Astrophysical journal (01-10-2023)“…Abstract We present electron densities n e in the interstellar medium (ISM) of star-forming galaxies at z = 4–9 observed by the JWST/NIRSpec GLASS, Early…”
Get full text
Journal Article -
12
Lyα Emission at z = 7–13: Clear Evolution of Lyα Equivalent Width Indicating a Late Cosmic Reionization History
Published in The Astrophysical journal (01-05-2024)“…Abstract We present the evolution of Ly α emission derived from 53 galaxies at z = 6.6–13.2, which have been identified by multiple JWST/NIRSpec spectroscopy…”
Get full text
Journal Article -
13
Evolution of N/O abundance ratios and ionization parameters from z ∼ 0 to 2 investigated by the direct temperature method
Published in Publications of the Astronomical Society of Japan (01-06-2017)“…Abstract We present N/O abundance ratios, ionization parameters q ion, and oxygen abundances O/H for a total of 41 galaxies (11 individual galaxies and a…”
Get full text
Journal Article -
14
Electronic States of Al–Mg–Zn Quasicrystal and Its Approximant Based on First‐Principles Calculations
Published in physica status solidi (b) (01-11-2020)“…First‐principles calculations are performed to investigate the electronic states of 1/1 and 2/1 approximants with the composition Al15Zn40Mg45, which is close…”
Get full text
Journal Article -
15
EMPRESS. V. Metallicity Diagnostics of Galaxies over 12 + log(O/H) ≃ 6.9–8.9 Established by a Local Galaxy Census: Preparing for JWST Spectroscopy
Published in The Astrophysical journal. Supplement series (01-09-2022)“…Abstract We present optical-line gas metallicity diagnostics established by the combination of local SDSS galaxies and the largest compilation of extremely…”
Get full text
Journal Article -
16
JWST Identification of Extremely Low C/N Galaxies with [N/O] ≳ 0.5 at z ∼ 6–10 Evidencing the Early CNO-cycle Enrichment and a Connection with Globular Cluster Formation
Published in The Astrophysical journal (01-12-2023)“…Abstract We present chemical abundance ratios of 70 star-forming galaxies at z ∼ 4–10 observed by the JWST/NIRSpec Early Release Observations, GLASS, and CEERS…”
Get full text
Journal Article -
17
FOREVER22: the first bright galaxies with Population III stars at redshifts z ≃ 10–20 and comparisons with JWST data
Published in Monthly notices of the Royal Astronomical Society (11-09-2023)“…ABSTRACT We study the formation of the first galaxies in overdense regions modelled by the FORmation and EVolution of galaxies in Extremely overdense Regions…”
Get full text
Journal Article -
18
Subaru High-z Exploration of Low-luminosity Quasars (SHELLQs). X. Discovery of 35 Quasars and Luminous Galaxies at 5.7 ≤ z ≤ 7.0
Published in The Astrophysical journal (01-10-2019)“…We report the discovery of 28 quasars and 7 luminous galaxies at 5.7 ≤ z ≤ 7.0. This is the tenth in a series of papers from the Subaru High-z Exploration of…”
Get full text
Journal Article -
19
Structure, electric transport, and magneto-transport properties of metallic double-chain based Pr1−xCaxBa2Cu4O8 with low Ca substitution
Published in Physica. B, Condensed matter (01-12-2022)“…In this study, we showed the crystal structure, electric resistivity, Seebeck and Hall coefficients, magneto-resistance, and magnetic susceptibility of…”
Get full text
Journal Article -
20
Changes in molecular conformation and electronic structure of DNA under 12C ions based on first-principles calculations
Published in Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (01-03-2024)“…Fundamental studies on the interaction between ionizing radiation and deoxyribonucleic acid (DNA) can contribute to understanding the biological effects of…”
Get full text
Journal Article