4 papers
Molecular gas content of gravitational-lensed quasars at cosmic noon
Zhiyuan Zheng, Yong Shi, Qiusheng Gu +4
Star-forming activity in the host galaxies of high-redshift quasars is crucial to understanding the connection between supermassive black hole (SMBH) activity and galaxy evolution.…
Gravitationally Bound Gas Determines Star Formation in the Galaxy
Sihan Jiao, Jingwen Wu, Zhi-Yu Zhang +13
Stars form from molecular gas under complex conditions influenced by multiple competing physical mechanisms, such as gravity, turbulence, and magnetic fields. However, accurately i…
Constraining the Physical Parameters of Blazars Using the Seed Factor Approach
Chang-Bin Deng, Yong-You Shi, Yu-Jie Song +4
The discovery that blazars dominate the extra-galactic γ-ray sky is a triumph in the Fermi era. However, the exact location of γ-ray emission region still remains in debate. Low-…
First detection of CO isotopologues in a high-redshift main-sequence galaxy: evidence of a top-heavy stellar initial mass function
Ziyi Guo, Zhi-Yu Zhang, Zhiqiang Yan +5
Recent observations and theories have presented a strong challenge to the universality of the stellar initial mass function (IMF) in extreme environments. A notable example has bee…