Author

Xiao-Hui Fan

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Open access Jun 2026

A Steep-extinction Quasi-stellar Object at z = 4.6: JWST Evidence for Abundant Small Dust Grains

The rapid accumulation of massive dust reservoirs in the early Universe remains a major challenge in astrophysics. While core-collapse supernovae can inject large dust grains (a ≳ 0.1 μm) on short timescales, explaining the total dust budgets in the early Universe likely requires efficient grain growth in the interstel...

Ming-Yu Li, Zheng Cai, R. Maiolino et al. · Astrophysical Journal Letter... · 1 citation

Preprint Sep 2026

COSMOS-3D: Diverse Environments and Hot-dust Signatures among Dusty Star-forming Galaxies at $z$ = 4.9-7.2

Dusty star-forming galaxies (DSFGs) are expected to trace early massive-halo assembly, but the connection between dust-obscured star formation, morphology, hot dust, and environment remains unclear at $z$>4. We combine JWST/NIRCam F444W grism spectroscopy from COSMOS-3D with MIRI F1000W/F2100W imaging and a mixed ALMA-...

S. Zou, M. Aravena, Shao-Ze Geng et al. · 0 citations

Review Open access Sep 2026

Q-IFU: A JWST/NIRSpec Integral Field Unit Survey of Luminous Quasars at z ∼ 5–6: Rest-frame Optical Nuclear Properties and Extended Nebulae

It remains debatable how billion-solar-mass supermassive black holes (SMBHs) form and evolve within the first billion years. We report results from a James Webb Space Telescope (JWST)/NIRSpec integral field unit (IFU) survey of 27 luminous quasars at z ∼ 5–6, enabling a systematic investigation of their key physical pr...

Wei-Zhe Liu, Xiao-Hui Fan, Richard Green et al. · Astrophysical Journal · 0 citations