Scientific article

Diffusion in barred-spiral galaxies

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

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.

  • 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.
Main files (1)
Article (Published version)
ISSN of the journal1055-6796

Technical informations

Creation09/07/2016 10:44:00 AM
First validation09/07/2016 10:44:00 AM
Update time03/15/2023 12:42:28 AM
Status update03/15/2023 12:42:27 AM
Last indexation05/02/2024 5:44:20 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack