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Scientific article
English

Diffusion in barred-spiral galaxies

Published inAstronomical and astrophysical transactions, vol. 27, p. 197-209
Publication date2012
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.

Classification
  • arxiv : astro-ph.GA
Note9 pages, 7 figures, submitted to Astron. Astrophys. Trans., talk presented to `Dynamics and Evolution of Disc Galaxies', Moscow region, May 31 - June 4, 2010
Citation (ISO format)
BRUNETTI, Maura, CHIAPPINI, Cristina, PFENNIGER, Daniel. Diffusion in barred-spiral galaxies. In: Astronomical and astrophysical transactions, 2012, vol. 27, p. 197–209.
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Article (Published version)
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Identifiers
ISSN of the journal1055-6796
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