6 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…
Galactic Stellar Halo Luminosity Function
Sarah A. Bird, Chris Flynn, Rudra Sekhri +5
We measure the luminosity function (LF) of the Milky Way's stellar halo, using a magnitude complete, distance limited sample of stars from DR3. Stars with high transverse ve…
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…
Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars
Behzad Tahmasebzadeh, Shashank Dattathri, Monica Valluri +7
Barred galaxies exhibit boxy/peanut or X-shapes (BP/X) protruding from their disks in edge-on views. Two types of BP/X morphologies exist depending on whether the X-wings meet at t…
Importance of Initial Condition on Bar Secular Evolution: Role of Halo Angular Momentum Distribution Discontinuity
Sandeep Kumar Kataria, Juntai Shen
The dark matter halo properties, for example, mass, spin and concentration play a significant role in the formation and evolution of bars in disk galaxies. This study highlights th…