Diffusion in barred-spiral galaxies
Astrophysics of Galaxies
2012-09-21 v1
Abstract
We characterize the radial migration of stars in the disk plane by calculating the diffusion coefficient and the diffusion time-scale for a bulge-disk N-body self-consistent system with a marginally-stable Toomre-Q parameter. We find that diffusion is not constant in time, but follows the evolution of the bar, and becomes maximum near the corotation region and in the external disk region, where asymmetric patterns develop.
Cite
@article{arxiv.1012.1160,
title = {Diffusion in barred-spiral galaxies},
author = {Maura Brunetti and Cristina Chiappini and Daniel Pfenniger},
journal= {arXiv preprint arXiv:1012.1160},
year = {2012}
}
Comments
9 pages, 7 figures, submitted to Astron. Astrophys. Trans., talk presented to `Dynamics and Evolution of Disc Galaxies', Moscow region, May 31 - June 4, 2010