The Polar Stellar Ring and Dark Halo of NGC 5907
arXiv:astro-ph/0008120 · doi:10.1134/1.20392
Abstract
Numerical simulations of the disruption of a dwarf companion moving in the polar plane of a massive galaxy are presented. The constructed model is compared with observational data on the recently discovered low-surface-brightness stellar ring around galaxy NGC 5907. Constraints on the ring lifetime (<=1.5 gyr after the first approach of the galaxies), on the structure of companion -- the ring presecursor, and on mass of dark halo of the main galaxy in whose gravitational field the companion moves are provided. The dark halo mass within 50 kpc of NGC 5907 center cannot exceed 3 or 4 "visible" masses.
8 pages, 6 figures, article published in Astronomy Letters, Vol.26, No.5, 2000, pp277-284
References in corpus (8)
- Dwarf Galaxies of the Local Group
- MEASURING GALAXY MASSES USING GALAXY-GALAXY GRAVITATIONAL LENSING
- The Disruption of the Sagittarius Dwarf Galaxy.
- Ring structure and warp of NGC5907 -- Interaction with dwarf galaxies
- Using Tidal Tails to Probe Dark Matter Halos
- A Faint Luminous Halo that May Trace the Dark Matter around Spiral Galaxy NGC~5907
- Tracing the Outer Structure of the Sagittarius Dwarf Galaxy: Detections at Angular Distances Between 10 and 34 Degrees
- Statistics of optical warps in spiral disks
Cited by in corpus (7)
- The ghost of a dwarf galaxy: fossils of the hierarchical formation of the nearby spiral galaxy NGC 5907
- Interpreting Debris from Satellite Disruption In External Galaxies
- Dark matter in galaxies
- Numerical Modelling of the Vertical Structure and Dark Halo Parameters in Disc Galaxies
- Loops formed by tidal tails as fossil records of a major merger
- Interaction between collisionless galactic discs and nonaxissymmetric dark matter haloes
- Disk heating and bending instability in galaxies with counterrotation