Author ORCID Identifier
Document Type
Article
Publication Date
1-1-1997
Abstract
Using analytic stability criteria we demonstrate that, because of their low surface mass density and large dark matter content, low surface brightness (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 a high surface brightness (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.
Keywords
galaxies: evolution, galaxies: interactions, galaxies: kinematics and dynamics, galaxies: spiral, galaxies: starburst, galaxies: structure
Language
English
Publication Title
Astrophysical Journal
Grant
HF-01074.01-94A
Rights
© The American Astronomical Society. All rights reserved. This content is free to access, download, and share. For all other uses, you must obtain permission to reuse content: https://journals.aas.org/article-charges-and-copyright/#AAS_material
Recommended Citation
J. Christopher Mihos et al 1997. Dynamical Stability and Environmental Influences in Low Surface Brightness Disk Galaxies. ApJ 477 L79
Manuscript Version
Final Publisher Version