4 papers
Pre-Virialized Assembly at Cosmic Dawn: The Dynamics and Extreme Ionization of Compact Group CGG-z7 at
Xiaoyang Wei, Zheng Cai, Fujiang Yu +2
We report the discovery of CGG-z7, the most compact galaxy group at identified to the north of the GOODS-North field, observed by the JWST POPPIES program. The system c…
Deeper detection limits in astronomical imaging using self-supervised spatiotemporal denoising
Yuduo Guo, Hao Zhang, Mingyu Li +10
The detection limit of astronomical imaging observations is limited by several noise sources. Some of that noise is correlated between neighbouring image pixels and exposures, so i…
A Metal-Free Galaxy at ? Evidence of Late Population III Star Formation at Cosmic Noon
Sijia Cai, Mingyu Li, Zheng Cai +10
Star formation from metal-free gas, the hallmark of the first generation of Population III stars, was long assumed to occur only in the very early Universe. We report the discovery…
The Cosmic Owl: Twin Active Collisional Ring Galaxies with Starburst Merging Front at
Mingyu Li, Bjorn H. C. Emonts, Zheng Cai +12
Galaxy mergers play a critical role in driving galaxy evolution, especially by transforming galaxy morphology, redistributing gas around galaxies, triggering active galactic nuclei…