Author

K. Mawatari

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Preprint Oct 2026

Discovery of a Broad-Line Active Galactic Nucleus at $z = 9.98$

The James Webb Space Telescope (JWST) has uncovered a previously unexplored population of faint active galactic nuclei (AGNs) in the early Universe. We present MoM-BL-z10 at $z=9.9837\pm0.0009$, identified through a systematic search for broad-line AGNs at $z\geq6$ using public JWST/NIRSpec PRISM spectra from the DAWN...

Xing-Yao Cai, A. Inoue, M. Onoue et al. · 0 citations

Open access Sep 2026

Deep Submillimeter and Radio Observations of the SSA22 Field. IV. Spectral Energy Distributions, Star Formation Histories, and the Infrared–Radio Correlation of the 850 μm–selected Submillimeter Galaxies

We analyze the spectral energy distributions (SEDs), star formation histories, and infrared–radio correlation (IRRC) of 221 850 μm–selected submillimeter galaxies (SMGs) in the SSA22 deep field, including both field and protocluster SMGs. The average SED reveals that SMGs have cooler dust temperatures than local ULIRGs...

Xin Zeng, Y. Ao, K. Mawatari et al. · Astrophysical Journal · 0 citations