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astro-ph.GA2026
Where Do Quasars Live? DESI DR1 Constraints from PAC Measurements
Shanquan Gui, Kun Xu, Donghai Zhao
Quasar environments connect the growth of supermassive black holes, active galactic nucleus feedback, and galaxy evolution. Small-scale quasar clustering probes the one-halo regime…
astro-ph.GA2026
Six-Class BPT Galaxy Classification for Survey-Scale AGN Candidate Prioritization: Deep Tabular Model and Informative Missingness Signals
Shanquan Gui
The Baldwin--Phillips--Terlevich (BPT) diagram is widely used to classify galaxies into star-forming systems, composite galaxies, and active galactic nuclei (AGNs), but its survey-…
astro-ph.GA2024
Photometric Objects Around Cosmic Webs (PAC). VI. High Satellite Fraction of Quasars
Shanquan Gui, Kun Xu, Y. P. Jing +2
The Photometric objects Around Cosmic webs (PAC) approach developed in Xu et al. (2022b) has the advantage of making full use of spectroscopic and deeper photometric surveys. With…