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astro-ph.GA2026
A Strongly Lensed Ultra-faint Arc at with an F200W excess in Abell S1063
Fujiang Yu, Mingyu Li, Zheng Cai +4
Strong gravitational lensing provides a powerful route to probing intrinsically faint galaxies during the first few hundred million years of cosmic history. In this Letter, we repo…
astro-ph.GA2026
Constraining the nature of active galactic nuclei through circumgalactic Lya emission at z=2-3
Shiwu Zhang, Zheng Cai, Fabrizio Arrigoni Battaia +8
We present a comprehensive analysis of circumgalactic Lya nebulae around 59 unobscured and 26 obscured quasars at z=2-3, observed with the Keck Cosmic Web Imager (KCWI), to constra…