Describing the Nonuniversal Galaxy Merger Timescales in IllustrisTNG: Effects of Host Halo Mass, Baryons, and Sample Selection

Galaxy merger timescales are crucial for understanding and modeling galaxy formation in our hierarchically structured Universe. However, previous studies have reported widely varying dependencies of merger timescales on initial orbital parameters and mass ratios at the first crossing of r _vir . Usi...

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Bibliographic Details

Published in:	The Astrophysical Journal
Main Authors:	Kun Xu, Y. P. Jing
Format:	Article
Language:	English
Published:	IOP Publishing 2025-01-01
Subjects:	Dynamical friction Galaxy evolution Galaxy mergers Hydrodynamical simulations
Online Access:	https://doi.org/10.3847/1538-4357/add5f6