Seiji Fujimoto
3 papers · Latest:
Galaxies & Cosmology
Two Exciting High-redshift Galaxy Candidates Turn Out to Be Two Exciting Ultra-cool Brown Dwarfs
Two high-redshift galaxy candidates observed by JWST were reclassified as ultra-cool brown dwarfs, highlighting potential contamination in deep surveys.
2604.23668
Galaxies & CosmologyFirst Statistical Study of Over 100 Magnified Stellar Events at Redshift $z \approx 0.725$ with JWST
JWST enabled the first statistical study of over 100 magnified stars at z≈0.725 in the Dragon galaxy, revealing insights into stellar populations and dark matter.
2604.22702
Galaxies & CosmologyHow I Wonder What You Are -- JWST's Little Red Dots do not TWINKLE
JWST's TWINKLE program found no variability in "Little Red Dots," challenging assumptions about their central engines and black hole accretion.
2604.13000
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