1999/03/10 by D. Friedli, Friedli, D.
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9903143
12 pages with 3 figures. To be published in the proceedings of "The Evolution of Galaxies on Cosmological Timescales" ed. J.E. Beckman, & T.J. Mahoney, ASP Conf. Ser
arxiv created 1999/03/10 · arxiv updated 2009/12/01
The life of disk galaxies is likely punctuated with the birth (spontaneous or induced), the aging (quick or slow), and the death (sudden or progressive) of bars. These events are responsible for various major changes of the galaxy which occur both on dynamical (∼0.1 Gyr) and cosmological (∼10 Gyr) time-scales, as well as both on large- (\ga10 kpc) and small-scales (\la1 kpc). These modifications affect the morphology, the orbital structure, the dynamics, the star formation and central fueling rates, the abundance profiles, etc. As a consequence, remarkable galaxy metamorphoses within the Hubble sequence can be observed. The formation and the fate of gaseous bars are also briefly examined.