15 papers
Star formation powers optical line emission from the CGM
Huanian Zhang, Lizhi Xie, Zhijie Qu +9
Using integral field spectroscopy, we explore the disk-halo interface, or the inner circumgalactic medium (CGM), of individual galaxies by constructing and analyzing emission-line…
Possible chemical signatures of first-star enrichment in a very metal-poor galaxy overdensity near the end of reionization
Zihao Li, Koki Kakiichi, Lise Christensen +24
The first generation of stars, known as Population III (Pop III), formed from primordial gas consisting solely of hydrogen and helium and is believed to have emerged only a few hun…
ASPIRE: The Environments and Dark Matter Halos of Luminous Quasars in the Epoch of Reionization
Feige Wang, Jaclyn B. Champagne, Jiamu Huang +42
We present a systematic study of the environments of 25 luminous quasars at from the ASPIRE program. Using JWST/NIRCam WFSS data, we identified 487 galaxies at $5.3 \less…
Reduced Incidence of Little Red Dots at z < 3 from Number Density and Halo Mass Evolution
Chenxuan Zhang, Huanian Zhang, Qingwen Wu +2
An intriguing puzzle in extragalactic astronomy is the scarcity of Little Red Dots (LRDs) at , compared to their higher abundance at earlier cosmic epochs. To investigate th…
Probing Dark Matter Halos of High-redshift Quasars via Wide-Field Clustering
Hao Meng, Huanian Zhang, Guangping Ye
High-redshift quasars are powerful tracers of both astrophysical processes and large-scale structure in the early Universe. Using a sample of 1,251 spectroscopically confirmed quas…
Extreme Galaxy-scale Outflows Are Frequent among Luminous Early Quasars
Weizhe Liu, Xiaohui Fan, Huan Li +23
The existence of abundant post-starburst/quiescent galaxies just 1-2 Gyrs after the Big Bang challenges our current paradigm of galaxy evolution. Cosmological simulations sug…