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

Yuichi Harikane, Masami Ouchi, Masamune Oguri, +6

The Astrophysical Journal Supplement Series

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

Yuichi Harikane, Yechi Zhang, Kimihiko Nakajima, +6

The Astrophysical Journal

Black Hole MassPhotometryBroad-line AgnsType 1Engineering +11

JWST Census for the Mass–Metallicity Star Formation Relations at z = 4–10 with Self-consistent Flux Calibration and Proper Metallicity Calibrators

Kimihiko Nakajima, Masami Ouchi, Yuki Isobe, +5

The Astrophysical Journal Supplement Series

Cosmic AbundanceGalaxy FormationPhotometryProper Metallicity CalibratorsEngineering +10

Pure Spectroscopic Constraints on UV Luminosity Functions and Cosmic Star Formation History from 25 Galaxies at z _spec = 8.61–13.20 Confirmed with JWST/NIRSpec

Yuichi Harikane, Kimihiko Nakajima, Masami Ouchi, +5

The Astrophysical Journal

Galaxy FormationPhotometryUv Luminosity FunctionsEngineeringPhysics +7

Redshift Evolution of Electron Density in the Interstellar Medium at z ∼ 0–9 Uncovered with JWST/NIRSpec Spectra and Line-spread Function Determinations

Yuki Isobe, Masami Ouchi, Kimihiko Nakajima, +5

The Astrophysical Journal

Cosmic AbundanceElectron DensityPhotometryGalaxy FormationEngineering +10

EMPRESS. VIII. A New Determination of Primordial He Abundance with Extremely Metal-poor Galaxies: A Suggestion of the Lepton Asymmetry and Implications for the Hubble Tension

Akinori Matsumoto, Masami Ouchi, Kimihiko Nakajima, +42

The Astrophysical Journal

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

Yoshiaki Ono, Yuichi Harikane, Masami Ouchi, +8

The Astrophysical Journal

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

Yuki Isobe, Masami Ouchi, Nozomu Tominaga, +9

The Astrophysical Journal

Cosmic AbundanceGalaxy FormationPhotometryLow C/n GalaxiesEarly Cno-cycle Enrichment +6

JWST Measurements of Neutral Hydrogen Fractions and Ionized Bubble Sizes at z = 7–12 Obtained with Lyα Damping Wing Absorptions in 27 Bright Continuum Galaxies

Hiroya Umeda, Masami Ouchi, Kimihiko Nakajima, +5

The Astrophysical Journal

Cosmic AbundanceGalaxy FormationPhotometryIonized Bubble SizesPhysics +7

Lyα Emission at z = 7–13: Clear Evolution of Lyα Equivalent Width Indicating a Late Cosmic Reionization History

Minami Nakane, Masami Ouchi, Kimihiko Nakajima, +6

The Astrophysical Journal

Cosmic AbundanceGalaxy FormationPhotometryEngineeringPhysics +11