Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-12-05
Astronomy and Astrophysics
Astrophysics
Invited review, to appear in Proc. of The Neutral ISM in Starburst Galaxies, eds. S. Aalto, S. Huettemeister, & A. Pedlar, ASP
Scientific paper
Although it is clear that the circumnuclear regions of galaxies are intimately related to their host galaxies, most directly through their bars, it remains unclear what exactly initiates and fuels nuclear stellar (starburst) and non-stellar (AGN) activity. Deviations from axisymmetry in the gravitational potential of a galaxy, set up by a bar or an interaction, are known to cause gas inflow, and must at some scale and level be related to the fueling of AGN and starbursts. We review the observed relations between bars and interactions on the one, and nuclear activity of the Seyfert and starburst variety on the other hand, and conclude that none of these relations is particularly significant in a statistical sense, except in extreme and rare cases, such as ultra-luminous infrared galaxies. Nuclear rings of star formation, however, are not only related directly to non-axisymmetries in the potential, but also, it seems, to the occurrence of nuclear activity. Their role as potential tracers of the fueling process must be further explored.
No associations
LandOfFree
From gas to starburst and AGN does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with From gas to starburst and AGN, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and From gas to starburst and AGN will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-237218