Dynamical Stability and Environmental Influences in Low Surface Brightness Disk Galaxies

Details Dynamical Stability and Environmental Influences in Low Surface Brightness Disk Galaxies Dynamical Stability and Environmental Influences in Low Surface Brightness Disk Galaxies

1996-12-11

arxiv.org/abs/astro-ph/9612115v1

Astronomy and Astrophysics

Astrophysics

13 pages, 3 figures, LaTeX using AASTeX macros 4.0, accepted for publication in the Astrophysical Journal Letters

Scientific paper

Using analytic stability criteria, we demonstrate that, due to their low surface mass density and large dark matter content, LSB disks are quite stable against the growth of global nonaxisymmetric modes such as bars. However, depending on their (poorly constrained) stellar velocity dispersions, they may be only marginally stable against local instabilities. We simulate a collision between an LSB and HSB galaxy and find that, while the HSB galaxy forms a strong bar, the response of the LSB disk is milder, manifesting weaker rings and spiral features. The lack of sufficient disk self-gravity to amplify dynamical instabilities naturally explains the rarity of bars in LSB disks. The stability of LSB disks may also inhibit interaction-driven gas inflow and starburst activity in these galaxies.

Affiliated with

Also associated with

No associations

Rating

Dynamical Stability and Environmental Influences in Low Surface Brightness Disk Galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Dynamical Stability and Environmental Influences in Low Surface Brightness Disk Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamical Stability and Environmental Influences in Low Surface Brightness Disk Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-533932