Lopsided galactic bars

Most of the observed and simulated galactic bars are symmetric in face-on view. However, there indeed cases that off-center with respect to disk or have an asymmetric shape. The only well-known example showing both these features is Large Magellanic Cloud. We report on identification several lopsided Illustris TNG100 simulation found among a sample elongated bar-like galaxies studied past. show clear asymmetry view, which shape footprint. measured evolution different parameters bars’ as function time find preserved for few Gyr. It can grow together bar appear later, after formation. considered two scenarios leading formation using controlled simulations. In first, Milky Way-like galaxy interacts massive companion placed radial orbit plane perpendicular orientation at first passage. second, initially has growth its more similar one IllustrisTNG galaxies, where it also preceded by presence disk. thus possible born disks, although some cases, difference between occurrence components quite large.