3 papers
astro-ph.GA2025
Galactic Contrail in NGC 3627 caused by Dwarf Galaxy Candidate or Massive Black Hole Flyby
Mengke Zhao, Guang-Xing Li
We report the discovery of a kpc scale molecular contrail in the spiral galaxy NGC 3627, a narrow structure spanning 8 kpc in length with a width of 200 pc and an extreme aspect ra…
astro-ph.GA2025
Tidally-Controlled Fragmentation around Black Holes, Massive Clumps, Protostars, and the Galactic Center
Guang-Xing Li
Gravity plays important roles at multiple scales in the universe. An important, yet often neglected, role of gravity is its ability in driving anisotropic fragmentation through tid…
astro-ph.GA2024
Morphology of molecular clouds at kiloparsec scale in the Milky Way: Shear-induced alignment and vertical confinement
Yi-Heng Xie, Guang-Xing Li, Bing-Qiu Chen
The shape of the cold interstellar molecular gas is determined by several processes, including self-gravity, tidal force, turbulence, magnetic field, and galactic shear. Based on t…