5 papers
Comparison of Bar Formation Mechanisms. IIIA. The role of classical bulges in spontaneous bar formation
Yirui Zheng, Juntai Shen, Bin-Hui Chen
We run a suite of -body simulations to investigate how classical bulges affect bar formation and properties under the internal formation mechanism. We incorporate bulges of vary…
Bar Formation During a Gaia-Sausage-Enceladus-like Merger Event
Bin-Hui Chen, Juntai Shen, Paola Di Matteo
Bars are among the most prominent galactic structures, yet their formation mechanisms remain incompletely understood. They can form either internally, via dynamical instabilities,…
Dependency of the Bar Formation Timescale On The Halo Spin
Bin-Hui Chen, Sandeep Kumar Kataria, Juntai Shen +1
Bars are among the most prominent structures in disk galaxies. While the widely accepted swing-amplification theory provides a qualitative framework for their formation, the detail…
The Dependency of Bar Formation Timescale on Disk Mass Fraction, Toomre , and Scale Height
Bin-Hui Chen, Juntai Shen
Bars are one of the most prominent galactic structures. The classical swing-amplification theory can qualitatively describe the spontaneous bar instability of stellar disks. Still,…
Comparison of Bar Formation Mechanisms. II. Does a Tidally Induced Bar Grow Faster Than an Internally Developed Bar?
Yirui Zheng, Juntai Shen, Xufen Wu +1
Bar structures can form internally due to the instability of their host galaxies or externally due to perturbations from other galaxies. We systematically quantify the growth times…