Astronomy and Astrophysics – Astrophysics
Scientific paper
1996-11-29
Astronomy and Astrophysics
Astrophysics
4 pages, 3 figures, LaTeX using AIP "aipproc" style file, to be published in the proceedings of the 1996 October Conference "S
Scientific paper
10.1063/1.52799
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 bar modes. However, they may be only marginally stable against local disk 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, in the form of spiral features and an oval distortion. Unlike its HSB counterpart, the LSB disk does not suffer strong inflow of gas into the central regions. The lack of sufficient disk self-gravity to amplify dynamical instabilities makes it difficult to explain strong interaction-driven starbursts in LSB galaxies without invoking mergers.
de Blok Erwin
McGaugh Stacy
Mihos Chris
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