Dynamical triggering of starbursts
arXiv:astro-ph/0410410 · doi:10.1063/1.2034965
Abstract
Galaxy interactions/mergers, gravitational instabilities and density waves, such as bars, are frequently invoked to trigger starbursts. These mechanisms have been explored through numerical simulations, with the help of various star formation recipes. Gravitational instabilities are necessary to initiate star formation, but the main trigger might be the gas flows, to provide sufficient fuel in a short time-scale. Gas accretion is also acting on the dynamics, in favoring bars/spirals, which will drive the gas inwards. Large amounts of external gas accretion are required to explain the bar frequency, and this accretion rate can be provided by the cosmic filaments, as supported by cosmological simulations. Subsequent interactions can then trigger starbursts by driving this accreted gas inwards.
6 pages, 2 figures, to appear in "The Evolution of Starbursts", ed. S. Huettemeister et al., AIP Proceedings
Cited by in corpus (7)
- The reversal of the star formation-density relation in the distant universe
- The star formation history of luminous infrared galaxies
- Multiscale magnetic fields in spiral galaxies: evolution and reversals
- Dense Gas in Nearby Galaxies: XVII. The Distribution of Ammonia in NGC253, Maffei2 and IC342
- Stellar dynamics of blue compact galaxies. II. Further indications of a merger in ESO 338-IG04
- Bimodal AGNs in Bimodal Galaxies
- Disentangling the morpho-kinematic properties of a face-on merger at z~0.7