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Articles by Yuichi Harikane

Stellar- and AGN-Driven Outflows in JWST Galaxies at z=3-9: Implications of More Spherical Galactic Fountains
7 days ago by Yi Xu and others at LogoNational Astronomical Observatory of Japan
Astrophysics of Galaxies
Census of Lyα Emission from \sim 600 Galaxies at z=5-14: Evolution of the Lyα Luminosity Function and a Late Sharp Cosmic Reionization
10 January 2025 by Yuta Kageura and others
Astrophysics of Galaxies
Another piece to the puzzle: radio detection of a JWST discovered AGN candidate
9 January 2025 by Anniek Gloudemans and others
Astrophysics of Galaxies
EMPRESS. X. Spatially resolved mass-metallicity relation in extremely metal-poor galaxies: evidence of episodic star-formation fueled by a metal-poor gas infall
5 December 2024 by Kimihiko Nakajima and others
Astrophysics of Galaxies
A Galaxy with an Extremely Blue UV Slope β=-3 at z=9.25 Identified by JWST Spectroscopy: Evidence for a Weak Nebular Continuum and Efficient Ionizing Photon Escape?
29 November 2024 by Hiroto Yanagisawa and others
Astrophysics of Galaxies
JWST, ALMA, and Keck Spectroscopic Constraints on the UV Luminosity Functions at z~7-14: Clumpiness and Compactness of the Brightest Galaxies in the Early Universe
29 November 2024 by Yuichi Harikane and others
Astrophysics of Galaxies
A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). X. The Massive and Passive Nature of Radio Galaxies at z \sim 4
28 November 2024 by Yuta Yamamoto and others
Astrophysics of Galaxies
Monster radio jet (>66 kpc) observed in quasar at z\sim5
25 November 2024 by Anniek Gloudemans and others
Astrophysics of Galaxies
SILVERRUSH. XIV. Lya Luminosity Functions and Angular Correlation Functions from ~20,000 Lya Emitters at z~2.2-7.3 from upto 24 {\rm deg}^2 HSC-SSP and CHORUS Surveys: Linking the Post-Reionization Epoch to the Heart of Reionization
23 November 2024 by Hiroya Umeda and others
Astrophysics of Galaxies
Probing the Origin of the Star Formation Excess Discovered by JWST through Gamma-Ray Bursts
30 October 2024 by Tatsuya Matsumoto and others
High Energy Astrophysical Phenomena, Astrophysics of Galaxies
The Physical Origin of Extreme Emission Line Galaxies at High redshifts: Strong {\sc [Oiii]} Emission Lines Produced by Obscured AGNs
16 October 2024 by Chenghao Zhu and others
Astrophysics of Galaxies
JWST/NIRSpec spectroscopy of intermediate-mass quiescent galaxies at z \sim 3-4
11 October 2024 by Riku Sato and others
Astrophysics of Galaxies
Dynamics of a Galaxy at z > 10 Explored by JWST Integral Field Spectroscopy: Hints of Rotating Disk Suggesting Weak Feedback
9 October 2024 by Yi Xu and others
Astrophysics of Galaxies
Low [O/Fe] Ratio in a Luminous Galaxy at the Early Cosmic Epoch (z>10): Signature of Short Delay Time or Bright Hypernovae/Pair-Instability Supernovae?
7 October 2024 by Minami Nakane and others
Astrophysics of Galaxies
Exploring Low-Mass Black Holes through Tidal Disruption Events in the Early Universe: Perspectives in the Era of JWST, RST, and LSST Surveys
12 September 2024 by Kohei Inayoshi and others at LogoASTRON
Astrophysics of Galaxies
Strong He I Emission Lines in High N/O Galaxies at z \sim 6 Identified in JWST Spectra: High He/H Abundance Ratios or High Electron Densities?
25 August 2024 by Hiroto Yanagisawa and others
Astrophysics of Galaxies
Balmer Decrement Anomalies in Galaxies at z ~ 6 Found by JWST Observations: Density-Bounded Nebulae or Excited H I Clouds?
25 August 2024 by Hiroto Yanagisawa and others
Astrophysics of Galaxies
Euclid preparation. The Cosmic Dawn Survey (DAWN) of the Euclid Deep and Auxiliary Fields
22 August 2024 by Euclid Collaboration and others
Astrophysics of Galaxies
Challenging the AGN scenario for JWST/NIRSpec broad Hα emitters/Little Red Dots in light of non-detection of NIRCam photometric variability and X-ray
5 July 2024 by Mitsuru Kokubo and Yuichi Harikane
Astrophysics of Galaxies, High Energy Astrophysical Phenomena
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
13 June 2024 by Hiroya Umeda and others
Astrophysics of Galaxies
FINER: Far-Infrared Nebular Emission Receiver for the Large Millimeter Telescope
12 June 2024 by Yoichi Tamura and others
Instrumentation and Methods for Astrophysics
Statistics for Galaxy Outflows at z\sim 6-9 with Imaging and Spectroscopic Signatures Identified with JWST/NIRCam and NIRSpec Data
8 May 2024 by Yechi Zhang and others at LogoNational Astronomical Observatory of Japan
Astrophysics of Galaxies
Cosmic Himalayas: The Highest Quasar Density Peak Identified in a 10,000 deg^2 Sky with Spatial Discrepancies between Galaxies, Quasars, and IGM HI
24 April 2024 by Yongming Liang and others
Astrophysics of Galaxies, Cosmology and Nongalactic Astrophysics
Lyα Emission at z=7-13: Clear Lyα Equivalent Width Evolution Indicating the Late Cosmic Reionization History
29 March 2024 by Minami Nakane and others
Astrophysics of Galaxies
EMPRESS. XIII. Chemical Enrichments of Young Galaxies Near and Far at z ~ 0 and 4-10: Fe/O, Ar/O, S/O, and N/O Measurements with Chemical Evolution Model Comparisons
11 March 2024 by Kuria Watanabe and others at LogoNational Astronomical Observatory of Japan
Astrophysics of Galaxies
EMPRESS. XIV. Strong High Ionization Lines of Young Galaxies at z=0-8: Ionizing Spectra Consistent with the Intermediate Mass Black Holes with M_{\rm BH}\sim 10^3-10^6\ M_\odot
10 March 2024 by Shun Hatano and others
Astrophysics of Galaxies
Tip of the iceberg: overmassive black holes at 4<z<7 found by JWST are not inconsistent with the local \mathcal{M}_{\rm BH}-\mathcal{M}_\star relation
29 February 2024 by Junyao Li and others
Astrophysics of Galaxies
Sub-Parsec-Scale Jet-Driven Water Maser with Possible Gravitational Acceleration in the Radio Galaxy NGC 1052
9 February 2024 by Seiji Kameno and others at LogoNational Astronomical Observatory of Japan
Astrophysics of Galaxies
EMPRESS. XII. Statistics on the Dynamics and Gas Mass Fraction of Extremely-Metal Poor Galaxies
26 January 2024 by Yi Xu and others
Astrophysics of Galaxies
JWST and ALMA Multiple-Line Study in and around a Galaxy at z=8.496: Optical to FIR Line Ratios and the Onset of an Outflow Promoting Ionizing Photon Escape
25 January 2024 by Seiji Fujimoto and others at LogoNational Astronomical Observatory of Japan
Astrophysics of Galaxies
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