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astro-ph.GA2026
Correlation between baryonic process and galaxy assembly bias
Zilan Xiao, Junyu Hua, Zhongxu Zhai +2
Galaxy assembly bias (GAB) is the dependence of galaxy clustering on secondary properties beyond halo mass. In this work, we study the connections between GAB and baryonic processe…
astro-ph.GA2026
A graph-based Neural Network surrogate model for accelerating semi-analytical model of galaxy formation and evolution
Xuejie Li, Zhongxu Zhai, Xiaohu Yang +2
Understanding how galaxy populations emerge and evolve from the growth of dark matter structure is a central challenge in galaxy formation theory. Semi-analytic models (SAMs) provi…
astro-ph.GA2026
What can galaxy clustering really tell us about the galaxy-halo connections?
Xiaoju Xu, Xiaohu Yang, Zhongxu Zhai +6
Subhalo abundance matching (SHAM) is a commonly used framework for modeling the galaxy-halo connection. Yet, its standard implementation has difficulty reproducing the observed gal…