On the Formation of Elliptical Rings in Disk Galaxies
arXiv:1503.04974 · doi:10.1088/0004-637X/805/1/32
Abstract
N-body simulations of galactic collisions are employed to investigate the formation of elliptical rings in disk galaxies. The relative inclination between disk and dwarf galaxies is studied with a fine step of five degrees. It is confirmed that the eccentricity of elliptical ring is linearly proportional to the inclination angle. Deriving from the simulational results, an analytic formula which expresses the eccentricity as a function of time and inclination angle is obtained. This formula shall be useful for the interpretations of the observations of ring systems, and therefore reveals the merging histories of galaxies.
arXiv comment22 pages, 10 figures, accepted for publication in ApJ
References in corpus (12)
- GADGET: A code for collisionless and gasdynamical cosmological simulations
- The importance of tides for the Local Group dwarf spheroidals
- The Orbit and Mass of the Sagittarius Dwarf Galaxy
- Atlas and Catalog of Collisional Ring Galaxies
- The Persistence of Warps in Spiral Galaxies with Massive Halos
- Rings and Bent Chain Galaxies in the GEMS and GOOD Fields
- Ring galaxies from off-centre collisions
- NGC922 - A new drop-through ring galaxy
- Adaptive mesh refinement simulations of collisional ring galaxies: effects of the interaction geometry
- Numerical modelling of Auriga's Wheel - a new ring galaxy
- The Axis-Symmetric Ring Galaxies: AM 0053-353, AM 0147-350, AM 1133-245, AM 1413-243, AM 2302-322, ARP 318, and Head-On Penetrations
- The Galactic Mergers and Gravitational Unbound Populations
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- Studying Dynamical Models of the Core Galaxy NGC 1399 with Merging Remnants
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