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- Title
Evolution and instabilities of disks harboring super massive black holes.
- Authors
Curir, Anna; de Romeri, Valentina; Murante, Giuseppe
- Abstract
The bar formation is still an open problem in modern astrophysics. In this paper we present numerical simulations performed with the aim of analyzing the growth of the bar instability inside stellar-gaseous disks, where the star formation is triggered, and a central black hole is present. The aim of this paper is to point out the impact of such a central massive black hole on the growth of the bar. We use N-body-SPH simulations of the same isolated disk-to-halo mass systems harboring black holes with different initial masses and a different energy feedback on the surrounding gas. We compare the results of these simulations with the one of the same disk without a black hole in its center. We make the same comparison (disk with and without black hole) for a stellar disk in a fully cosmological scenario. A stellar bar, lasting 10 Gyrs, is present in all our simulations. The central black hole mass has in general a mild effect on the ellipticity of the bar but it is never able to destroy it. The black holes grow in different ways according to their initial mass and their feedback efficiency, the final values of the velocity dispersions and of the black hole masses are close to the phenomenological constraints.
- Subjects
BLACK holes; GRAVITATIONAL collapse; STAR formation; SIMULATION methods &; models; ASTROPHYSICS
- Publication
Astrophysics & Space Science, 2010, Vol 327, Issue 2, p259
- ISSN
0004-640X
- Publication type
Article
- DOI
10.1007/s10509-010-0328-8