The AGORA High-resolution Galaxy Simulations Comparison Project. IX - Part 2: Effects of a Major Galaxy Merger on the Stellar Morphology of a Milky Way-mass Galaxy Progenitor

arXiv:2607.21710 · astro-ph.GA · Submitted 2026-07-23 · Read on arXiv

Thinh Huu Nguyen, Kirk S. S. Barrow, Minyong Jung, Ramón Rodríguez-Cardoso, Santi Roca-Fàbrega, Ji-hoon Kim, Joel R. Primack, Kentaro Nagamine, Renyue Cen, Daniel Ceverino, Weiguang Cui, Anna Genina, Hyeonyong Kim, Yuri Oku, Johnny W. Powell, Yves Revaz, Pablo Granizo, Alessandro Lupi, Ikkoh Shimizu, Héctor Velázquez, Tom Abel, Oscar Agertz, Avishai Dekel, Boon Kiat Oh, Thomas R. Quinn, the AGORA Collaboration

astro-ph.GA

Submitted: 2026-07-23

Comments: 24 pages (20 pages main text plus appendices and references), 10 figures (8 in main text), 3 tables, submitted to MNRAS. Visit the AGORA Collaboration website (https://sites.google.com/site/santacruzcomparisonproject/) for more information

Project page: https://sites.google.com/site/santacruzcomparisonproject

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

Terminology

• Stellar Feedback — 23× in this paper · explained in 2 episodes
• Velocity Dispersion — 10× in this paper · explained in 2 episodes
• Core — 5× in this paper · explained in 2 episodes
• Calibration — 4× in this paper · explained in 7 episodes
• AGN — 3× in this paper · explained in 1 episode
• AGN Feedback — 1× in this paper · explained in 1 episode
• Alignment — 1× in this paper · explained in 1 episode
• Fine-Tuning — 1× in this paper · explained in 5 episodes
• National Research Foundation of Korea — 1× in this paper
• Star Formation Rate (SFR) — 1× in this paper · explained in 5 episodes
• World Premier Research Center Initiative — 1× in this paper

Sources

• The AGORA High-resolution Galaxy Simulations Comparison Project. XI: Solving the Non-Spherical Morphology and Evolution of Dark Matter Halos with Haskap Pie
• The AGORA High-resolution Galaxy Simulations Comparison Project. VIII: Disk Formation and Evolution of Simulated Milky Way Mass Galaxy Progenitors at $1<z<5$

Related papers

• Apparent Stability in Self-Gravitating Turbulence and the Evolution of Molecular Clouds
• Two sets of potential-density basis pairs for the study of radial perturbations in collisionless spherical stellar systems
• Constraining reionization-era Ly alpha escape with JELS-MUSE: a highly complete H alpha-selected sample at z about6.1
• Deriving volume density profiles of filaments from observed surface densities
• Little Red Dots and Supermassive Black Hole Seed Formation in Ultralight Dark Matter Halos
• MEGATRON: how the first stars can create an iron metallicity plateau in the smallest dwarf galaxies