4 papers
A high rate of foreground contaminants toward high-redshift galaxies resolved by JWST
Weiyang Liu, Linhua Jiang
We present a study of high-redshift Ly emitters (LAEs) with multiple components using HST and JWST. High-redshift galaxies are mostly point-like objects on ground-based images,…
JWST Insights into Narrow-line Little Red Dots
Zijian Zhang, Linhua Jiang, Weiyang Liu +2
James Webb Space Telescope (JWST) has revealed a population of red and compact objects with a unique V-shape SED at z >= 4 known as Little Red Dots (LRDs). Most of the LRDs with ex…
AGN ruled out as the dominant source of cosmic reionization
Danyang Jiang, Linhua Jiang, Shengxiu Sun +2
Cosmic reionization represents the latest phase transition in the Universe, when the Lyman continuum (LyC) photons turned the intergalactic medium (IGM) from neutral to highly ioni…
Analysis of Multi-epoch JWST Images of Little Red Dots: Tentative Detection of Variability in a Minority of Sources
Zijian Zhang, Linhua Jiang, Weiyang Liu +1
James Webb Space Telescope (JWST) has revealed a population of red and compact sources at known as ``Little Red Dots'' (LRDs) that are likely active galactic nuclei (…