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Seiji Fujimoto

  1. A CEERS Discovery of an Accreting Supermassive Black Hole 570 Myr after the Big Bang: Identifying a Progenitor of Massive z > 6 Quasars
    2023/03/15 by Rebecca L. Larson, Steven L. Finkelstein, Dale D. Kocevski +57 · 2 voices · 45 citations
    Physics and Astronomy · Environmental Science · #Galaxies: Formation, Evolution, Phenomena #Astrophysical Phenomena and Observations #Plant Water Relations and Carbon Dynamics
  2. The Hyper Suprime-Cam SSP Survey: Overview and survey design
    2017/08/04 by Hiroaki Aihara, Nobuo Arimoto, Robert Armstrong +141 · 65 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Radio Astronomy Observations and Technology #Galaxies: Formation, Evolution, Phenomena
  3. The JWST UNCOVER Treasury survey: Ultradeep NIRSpec and NIRCam ObserVations before the Epoch of Reionization
    2022/12/08 by Rachel Bezanson, Ivo Labbe, Bezanson, Rachel +90 · 1 voice · 24 citations
    Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #astro-ph.GA
  4. COSMOS-Web: An Overview of the JWST Cosmic Origins Survey
    2022/11/15 by Caitlin M. Casey, Casey, Caitlin M., Jeyhan S. Kartaltepe +162 · 41 citations
    Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Gamma-ray bursts and supernovae
  5. COSMOS-Web: The over-abundance and physical nature of "little red dots"--Implications for early galaxy and SMBH assembly
    2024/06/14 by Hollis B. Akins, Akins, Hollis B., Caitlin M. Casey +79 · 41 citations
    Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Embedded Systems and FPGA Design #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  6. UNCOVER: Candidate Red Active Galactic Nuclei at 3
    2023/06/12 by Ivo Labbé, Jenny E. Greene, Labbe, Ivo +59 · 27 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  7. The Rise of Faint, Red AGN at z>4: A Sample of Little Red Dots in the JWST Extragalactic Legacy Fields
    2024/04/04 by Dale D. Kocevski, Kocevski, Dale D., Steven L. Finkelstein +126 · 3 voices · 8 citations
    Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Gamma-ray bursts and supernovae #astro-ph.GA
  8. A high black hole to host mass ratio in a lensed AGN in the early Universe
    2023/08/10 by Lukas J. Furtak, Ivo Labbé, Furtak, Lukas J. +70 · 27 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  9. UNCOVER: A NIRSpec Identification of a Broad Line AGN at z = 8.50
    2023/08/22 by Vasily Kokorev, Seiji Fujimoto, Kokorev, Vasily +60 · 25 citations
    Physics and Astronomy · #Astrophysical Phenomena and Observations #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research
  10. Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). VIII. A less biased view of the early co-evolution of black holes and host galaxies
    2019/08/07 by Takuma Izumi, Masafusa Onoue, Yoshiki Matsuoka +24 · 12 citations
    Physics and Astronomy · Engineering · #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research #Space Technology and Applications
  11. The Complete CEERS Early Universe Galaxy Sample: A Surprisingly Slow Evolution of the Space Density of Bright Galaxies at z ~ 8.5-14.5
    2023/11/07 by Steven L. Finkelstein, Finkelstein, Steven L., Gene C. K. Leung +106 · 27 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
  12. 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 · 30 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
  13. COSMOS-Web: Intrinsically Luminous z\gtrsim10 Galaxy Candidates Test Early Stellar Mass Assembly
    2023/08/21 by Caitlin M. Casey, Casey, Caitlin M., Hollis B. Akins +87 · 1 voice · 16 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies
  14. Bound star clusters observed in a lensed galaxy 460 Myr after the Big Bang
    2024/01/06 by Angela Adamo, Larry D. Bradley, Adamo, Angela +57 · 1 voice · 16 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph.GA
  15. JWST Imaging of Earendel, the Extremely Magnified Star at Redshift z=6.2
    2022/08/18 by Brian Welch, Dan Coe, Erik Zackrisson +60 · 1 voice · 4 citations
    Physics and Astronomy · #astro-ph.GA
  16. The First Billion Years, According to JWST
    2024/05/31 by Angela Adamo, Hakim Atek, Adamo, Angela +104 · 5 voices · 9 citations
    Psychology · Physics and Astronomy · #Paranormal Experiences and Beliefs #Historical Astronomy and Related Studies #History and Developments in Astronomy
  17. Subaru High-z Exploration of Low-Luminosity Quasars (SHELLQs). III. Star formation properties of the host galaxies at z ≳ 6 studied with ALMA
    2018/02/20 by Takuma Izumi, Masafusa Onoue, Hikari Shirakata +26 · 8 citations
    Physics and Astronomy · #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies
  18. UNCOVER: A NIRSpec Census of Lensed Galaxies at z=8.50-13.08 Probing a High AGN Fraction and Ionized Bubbles in the Shadow
    2023/08/22 by Seiji Fujimoto, Fujimoto, Seiji, Bingjie Wang +69 · 12 citations
    Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Gamma-ray bursts and supernovae
  19. JWST NIRSpec spectroscopy of the triply-lensed z = 10.17 galaxy MACS0647-JD
    2023/05/04 by Tiger Yu-Yang Hsiao, Hsiao, Tiger Yu-Yang, Abdurrouf +78 · 9 citations
    Physics and Astronomy · #Adaptive optics and wavefront sensing #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  20. NGDEEP Epoch 1: The Faint-End of the Luminosity Function at z ∼ 9-12 from Ultra-Deep JWST Imaging
    2023/06/09 by Gene C. K. Leung, Micaela B. Bagley, Leung, Gene C. K. +55 · 7 citations
    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
  21. The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey
    2023/02/10 by Micaela B. Bagley, Nor Pirzkal, Bagley, Micaela B. +93 · 7 citations
    Physics and Astronomy · Engineering · #Astronomy and Astrophysical Research #Superconducting and THz Device Technology #Photocathodes and Microchannel Plates
  22. Identification of >40 gravitationally magnified stars in a galaxy at redshift of 0.725
    2024/04/11 by Yoshinobu Fudamoto, Fengwu Sun, Jose M. Diego +54 · 1 voice · 6 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Stellar, planetary, and galactic studies #Gamma-ray bursts and supernovae
  23. The Cosmic Evolution Early Release Science Survey (CEERS)
    2025/01/07 by Steven L. Finkelstein, Finkelstein, Steven L., Micaela B. Bagley +194 · 16 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences
  24. A Post-Starburst Pathway for the Formation of Massive Galaxies and Black Holes at z>6
    2024/09/11 by Masafusa Onoue, Onoue, Masafusa, Xuheng Ding +93 · 12 citations
    Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences
  25. JWST NIRSpec High-resolution Spectroscopy of MACS0647-JD at z=10.167: Resolved [OII] Doublet and Electron Density in an Early Galaxy
    2024/04/24 by Abdurrouf, Rebecca L. Larson, Abdurro'uf +55 · 8 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Stellar, planetary, and galactic studies
  26. Unveiling the distant Universe: Characterizing z≥9 Galaxies in the first epoch of COSMOS-Web
    2023/08/01 by Maximilien Franco, Hollis B. Akins, Franco, Maximilien +97 · 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
  27. ALMA Lensing Cluster Survey: Deep 1.2 mm Number Counts and Infrared Luminosity Functions at z≃1-8
    2023/03/03 by Seiji Fujimoto, Kotaro Kohno, Fujimoto, Seiji +82 · 5 citations
    Physics and Astronomy · #Astrophysics and Star Formation Studies #Astronomy and Astrophysical Research #Stellar, planetary, and galactic studies
  28. An upper limit of 106 M_\odot in dust from ALMA observations in 60 Little Red Dots
    2025/05/24 by Caitlin M. Casey, Hollis B. Akins, Casey, Caitlin M. +21 · 1 voice · 17 citations
    Earth and Planetary Sciences · #Geophysics and Gravity Measurements
  29. CAPERS-LRD-z9: A Gas-enshrouded Little Red Dot Hosting a Broad-line Active Galactic Nucleus at z = 9.288
    2025/08/06 by Anthony J. Taylor, Vasily Kokorev, Dale D. Kocevski +49 · 1 voice · 19 citations
    Physics and Astronomy · #Galaxies: Formation, Evolution, Phenomena #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena
  30. Reaching for the stars -- JWST/NIRSpec spectroscopy of a lensed star candidate at z=4.76
    2023/07/31 by Lukas J. Furtak, Furtak, Lukas J., Ashish K. Meena +75 · 1 voice · 3 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph.CO #astro-ph.GA #astro-ph.SR
  31. Two Exciting High-redshift Galaxy Candidates Turn Out to Be Two Exciting Ultra-cool Brown Dwarfs
    2026/04/26 by Maruša Bradač, Chris Willott, Yoshihisa Asada +37 · 5 voices · 1 citation
    #astro-ph.GA #astro-ph.EP #astro-ph.SR
  32. Hidden Little Monsters: Spectroscopic Identification of Low-Mass, Broad-Line AGN at z>5 with CEERS
    2023/01/31 by D. Kocevski, Kocevski, Dale D., Masafusa Onoue +71 · 3 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  33. CAPERS Observations of Two UV-Bright Galaxies at z>10. More Evidence for Bursting Star Formation in the Early Universe
    2025/04/16 by Vasily Kokorev, Kokorev, Vasily, Óscar A. Chávez Ortiz +78 · 10 citations
    Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Space Technology and Applications
  34. Two massive, compact, and dust-obscured candidate z∼ 8 galaxies discovered by JWST
    2023/04/24 by Hollis B. Akins, Akins, Hollis B., Caitlin M. Casey +115 · 3 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
  35. CAPERS-LRD-z9: A Gas Enshrouded Little Red Dot Hosting a Broad-line AGN at z=9.288
    2025/05/07 by Anthony J. Taylor, Taylor, Anthony J., Vasily Kokorev +101 · 7 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  36. A Glimpse of the New Redshift Frontier Through Abell S1063
    2024/11/20 by Vasily Kokorev, Hakim Atek, Kokorev, Vasily +65 · 5 voices · 1 citation
    #astro-ph.GA
  37. ALMA FIR View of Ultra High-redshift Galaxy Candidates at z∼ 11-17: Blue Monsters or Low-z Red Interlopers?
    2022/11/07 by Seiji Fujimoto, Fujimoto, Seiji, Steven L. Finkelstein +100 · 2 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies
  38. Medium-band Astrophysics with the Grism of NIRCam In Frontier fields (MAGNIF): Spectroscopic Census of Hα Luminosity Functions and Cosmic Star Formation at z∼ 4.5 and 6.3
    2025/03/05 by Shuqi Fu, Fengwu Sun, Fu, Shuqi +73 · 5 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  39. Red, hot, and very metal poor: extreme properties of a massive accreting black hole in the first 500 Myr
    2024/12/06 by Roberta Tripodi, Tripodi, Roberta, Nicholas S. Martis +61 · 3 citations
    Mathematics · Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #History and Theory of Mathematics
  40. An unambiguous AGN and a Balmer break in an Ultraluminous Little Red Dot at z=4.47 from Ultradeep UNCOVER and All the Little Things Spectroscopy
    2024/12/05 by Ivo Labbe, Labbe, Ivo, Jenny E. Greene +77 · 1 voice · 3 citations
    Physics and Astronomy · #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #astro-ph.GA
  41. The Extended Mapping Obscuration to Reionization with ALMA (Ex-MORA) Survey: 5σ Source Catalog and Redshift Distribution
    2024/08/26 by Arianna S. Long, Caitlin M. Casey, Long, Arianna S. +84 · 2 citations
    Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Gamma-ray bursts and supernovae
  42. The Cosmic Evolution Early Release Science Survey (CEERS)
    2025/04/03 by Steven L. Finkelstein, Micaela B. Bagley, Pablo Arrabal Haro +97 · 1 voice · 4 citations
    Physics and Astronomy · #Stellar, planetary, and galactic studies #Astronomy and Astrophysical Research #Gamma-ray bursts and supernovae
  43. GLIMPSE: An ultra-faint ≃ 105 M\odot Pop III Galaxy Candidate and First Constraints on the Pop III UV Luminosity Function at z≃6-7
    2025/01/20 by Seiji Fujimoto, Fujimoto, Seiji, Rohan P. Naidu +72 · 2 voices · 1 citation
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph.CO #astro-ph.GA #astro-ph.SR
  44. SHELLQs-JWST Unveils the Host Galaxies of 12 Quasars at z>6
    2025/05/06 by Xuheng Ding, Ding, Xuheng, Masafusa Onoue +71 · 5 citations
    Physics and Astronomy · Engineering · #Galaxies: Formation, Evolution, Phenomena #Astronomy and Astrophysical Research #Space Technology and Applications
  45. Merging gas-rich galaxies that harbor low-luminosity twin quasars at z = 6.05: a promising progenitor of the most luminous quasars
    2024/05/03 by Takuma Izumi, Izumi, Takuma, Yoshiki Matsuoka +33 · 1 citation
    Engineering · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena #Photocathodes and Microchannel Plates
  46. Gas conditions of a star-formation selected sample in the first billion years
    2024/06/27 by Tom J. L. C. Bakx, Hiddo Algera, Bakx, Tom J. L. C. +43 · 2 citations
    Physics and Astronomy · Chemistry · #Astrophysics and Star Formation Studies #Molecular Spectroscopy and Structure #Astro and Planetary Science
  47. Medium Bands, Mega Science: a JWST/NIRCam Medium-Band Imaging Survey of Abell 2744
    2024/04/19 by Katherine A. Suess, John R. Weaver, Suess, Katherine A. +81 · 1 citation
    Earth and Planetary Sciences · Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Gamma-ray bursts and supernovae #Geophysics and Gravity Measurements
  48. Little Red Dots and their Progenitors from Direct Collapse Black Holes
    2025/08/19 by Junehyoung Jeon, Boyuan Liu, Jeon, Junehyoung +17 · 6 citations
    Physics and Astronomy · #Black Holes and Theoretical Physics #Astrophysical Phenomena and Observations
  49. Broad-Line AGN at 3.5
    2024/09/10 by Anthony J. Taylor, Steven L. Finkelstein, Taylor, Anthony J. +99 · 1 citation
    Physics and Astronomy · #Astrophysics of Galaxies (astro-ph.GA) #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #Particle physics theoretical and experimental studies
  50. A complex node of the cosmic web associated with the massive galaxy cluster MACS J0600.1-2008
    2024/04/04 by Lukas J. Furtak, Adi Zitrin, Furtak, Lukas J. +38 · 1 citation
    Physics and Astronomy · #Galaxies: Formation, Evolution, Phenomena #Astrophysical Phenomena and Observations #Astronomy and Astrophysical Research
  51. 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
  52. Discovery of a Little Red Dot candidate at z\gtrsim10 in COSMOS-Web based on MIRI-NIRCam selection
    2025/07/31 by Takumi S. Tanaka, Tanaka, Takumi S., Hollis B. Akins +131 · 4 citations
    Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Galaxies: Formation, Evolution, Phenomena
  53. VENUS: an ultra-faint galaxy hosting the metal-poor type II supernova at z=5.13 Witnessing the initial metal enrichment with extremely frequent core-collapse supernovae?
    2026/07/15 by Yoshihisa Asada, Seiji Fujimoto, Joseph F. V. Allingham +50
    #astro-ph.GA #astro-ph.HE