4 papers
Deep Learning Calibration of the Quasar X-ray/UV Luminosity Relation for Cosmological Applications
Jiaze Gao, Yun Chen, Lixin Xu +2
Quasars can serve as standard candles through an empirical scaling relation between their ultraviolet (UV) and X-ray luminosities. As high-redshift probes, it is critical to test w…
New Dynamical Measurements from a Lensed Quasar Sample: Joint Analysis Constrains the Mass Profile Evolution of Lens Galaxies
Ziyu Guo, Yun Chen, Yiping Shu +4
We present a systematic study of the internal mass structure of early-type galaxies (ETGs) based on 106 galaxy-scale strong gravitational lenses with background quasars, all having…
Redshift Evolution of the HII Galaxy - Relation: Gaussian Process Analysis and Cosmological Implications
Jiaze Gao, Yun Chen, Lixin Xu
The empirical correlation between the H luminosity () and the ionized gas velocity dispersion () in HII starburst galaxies (HIIGs) provides a foundation for using them a…
Anisotropy of Satellite Galaxies-I: Contrasting Correlations with Central Galaxy, Host Halo, and Large-Scale Filament Structures
Zhuoming Zhang, Weiguang Cui, Yun Chen +2
Using the SIMBA, EAGLE, and IllustrisTNG-100 galaxy formation simulations, we examine the anisotropy of the satellite distribution and its dependencies on central galaxies, host ha…