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Harikane, Yuichi

  1. A JWST/NIRSpec First Census of Broad-Line AGNs at z=4-7: Detection of 10 Faint AGNs with MBH~106-108 Msun and Their Host Galaxy Properties
    2023/03/21 by Yuichi Harikane, Yechi Zhang, Harikane, Yuichi +15 · 52 citations
    Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  2. Pure Spectroscopic Constraints on UV Luminosity Functions and Cosmic Star Formation History From 25 Galaxies at zspec=8.61-13.20 Confirmed with JWST/NIRSpec
    2023/04/13 by Yuichi Harikane, Harikane, Yuichi, Kimihiko Nakajima +13 · 17 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae
  3. 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
    2024/06/26 by Yuichi Harikane, Harikane, Yuichi, Akio Inoue +67 · 26 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies
  4. Morphologies of ~190,000 Galaxies at z=0-10 Revealed with HST Legacy Data I. Size Evolution
    2015/03/25 by Takatoshi Shibuya, Shibuya, Takatoshi, Masami Ouchi +3 · 5 citations
    Physics and Astronomy · #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research
  5. Tip of the iceberg: overmassive black holes at 4
    2024/02/29 by Li, Junyao, Silverman, John D., Shen, Yue +8 · 12 citations
    #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences
  6. JWST Identification of Extremely Low C/N Galaxies with [N/O]\gtrsim 0.5 at z∼ 6-10 Evidencing the Early CNO-Cycle Enrichment and a Connection with Globular Cluster Formation
    2023/07/03 by Yuki Isobe, Masami Ouchi, Isobe, Yuki +21 · 6 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies
  7. 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
    2023/06/01 by Umeda, Hiroya, Ouchi, Masami, Nakajima, Kimihiko +5 · 5 citations
    #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences
  8. Challenging the AGN scenario for JWST/NIRSpec LRD and non-LRD broad Hα emitters in light of non-detection of NIRCam photometric variability and X-ray
    2024/07/05 by Mitsuru Kokubo, Kokubo, Mitsuru, Yuichi Harikane +1 · 6 citations
    Physics and Astronomy · Engineering · #Advanced Optical Sensing Technologies #Optical Systems and Laser Technology #Astronomical Observations and Instrumentation
  9. Probing the Origin of the Star Formation Excess Discovered by JWST through Gamma-Ray Bursts
    2024/09/17 by Tatsuya Matsumoto, Matsumoto, Tatsuya, Yuichi Harikane +5 · 5 citations
    Physics and Astronomy · Engineering · #Gamma-ray bursts and supernovae #Astronomy and Astrophysical Research #Astronomical Observations and Instrumentation
  10. UNIONS: The Ultraviolet Near-Infrared Optical Northern Survey
    2025/03/18 by Gwyn, Stephen, McConnachie, Alan W., Cuillandre, Jean-Charles +86 · 7 citations
    #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM)
  11. SILVERRUSH. XIV. Lya Luminosity Functions and Angular Correlation Functions from ~20,000 Lya Emitters at z~2.2-7.3 from upto 24 \rm deg2 HSC-SSP and CHORUS Surveys: Linking the Post-Reionization Epoch to the Heart of Reionization
    2024/11/23 by Hiroya Umeda, Masami Ouchi, Umeda, Hiroya +25 · 4 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences
  12. Another piece to the puzzle: radio detection of a JWST detected AGN candidate
    2025/01/09 by Gloudemans, Anniek J., Duncan, Kenneth J., Eilers, Anna-Christina +5 · 5 citations
    #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences
  13. Stellar- and AGN-Driven Outflows in JWST Galaxies at z=3-9: More Frequent, Wider Opening Angles, and Mostly Bounded
    2023/10/10 by Yi Xu, Masami Ouchi, Xu, Yi +13 · 2 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae
  14. SILVERRUSH. XIII. A Catalog of 20,567 Lyα Emitters at z=2-7 Identified in the Full-depth Data of the Subaru/HSC-SSP and CHORUS Surveys
    2023/05/15 by Satoshi Kikuta, Kikuta, Satoshi, Masami Ouchi +29 · 2 citations
    Physics and Astronomy · #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research #Gamma-ray bursts and supernovae
  15. JWST Census for the Mass-Metallicity Star-Formation Relations at z=4-10 with the Self-Consistent Flux Calibration and the Proper Metallicity Calibrators
    2023/01/30 by Kimihiko Nakajima, Nakajima, Kimihiko, Masami Ouchi +13 · 2 citations
    Physics and Astronomy · #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research #Stellar, planetary, and galactic studies
  16. EMPRESS. XV. A New Determination of the Primordial Helium Abundance Suggesting a Moderately Low YP Value
    2025/06/30 by Hiroto Yanagisawa, Yanagisawa, Hiroto, Masami Ouchi +39 · 8 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Electrical and Electromagnetic Research #Galaxies: Formation, Evolution, Phenomena #astro-ph.CO #astro-ph.GA
  17. Probing the Cosmic Reionization History with JWST: Gunn-Peterson and Lyα Damping Wing Absorption at 4.5 < z < 13
    2025/04/07 by Hiroya Umeda, Masami Ouchi, Umeda, Hiroya +11 · 3 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Gravitation Theories #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  18. Census for the Rest-frame Optical and UV Morphologies of Galaxies at z=4-10: First Phase of Inside-Out Galaxy Formation
    2023/09/06 by Yoshiaki Ono, Yuichi Harikane, Ono, Yoshiaki +17 · 1 citation
    Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  19. Balmer Decrement Anomalies in Galaxies at z ~ 6 Found by JWST Observations: Density-Bounded Nebulae or Excited H I Clouds?
    2024/03/29 by Yanagisawa, Hiroto, Ouchi, Masami, Nakajima, Kimihiko +11 · 1 citation
    #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences
  20. Strong He I Emission Lines in High N/O Galaxies at z ∼ 6 Identified in JWST Spectra: High He/H Abundance Ratios or High Electron Densities?
    2024/05/03 by Hiroto Yanagisawa, Yanagisawa, Hiroto, Masami Ouchi +31 · 1 citation
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  21. SAPPHIRES: A Galaxy Over-Density in the Heart of Cosmic Reionization at z=8.47
    2025/03/19 by Fudamoto, Yoshinobu, Helton, Jakob M., Lin, Xiaojing +17 · 2 citations
    #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences
  22. A Wide and Deep Exploration of Radio Galaxies with Subaru HSC (WERGS). X. The Massive and Passive Nature of Radio Galaxies at z ∼ 4
    2024/11/28 by Yuta Yamamoto, Yamamoto, Yuta, Tohru Nagao +19 · 1 citation
    Physics and Astronomy · #Radio Astronomy Observations and Technology #Astronomy and Astrophysical Research #Gamma-ray bursts and supernovae
  23. Discovery of a Little Red Dot candidate at z\gtrsim10 in COSMOS-Web based on MIRI-NIRCam selection
    2025/07/31 by Tanaka, Takumi S., Akins, Hollis B., Harikane, Yuichi +64 · 4 citations
    #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences
  24. VENUS: A Strongly Lensed Clumpy Galaxy at z∼11-12 behind the Galaxy Cluster MACS J0257.1-2325
    2025/11/18 by Minami Nakane, Vasily Kokorev, Nakane, Minami +149 · 1 citation
    #astro-ph.GA
  25. SAPPHIRES: Extremely Metal-Poor Galaxy Candidates with 12+\rm log(O/H)<7.0 at z∼5-7 from Deep JWST/NIRCam Grism Observations
    2025/05/06 by Hsiao, Tiger Yu-Yang, Sun, Fengwu, Lin, Xiaojing +19 · 1 citation
    #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences