Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap%26ss.293..381p&link_type=abstract
Astrophysics and Space Science, v. 293, Issue 4, p. 381-391 (2004).
Astronomy and Astrophysics
Astrophysics
Galaxies: Structure, Formation
Scientific paper
This paper considers the formation of stellar galactic structures, which are assumed to be slow modes in a disc of orbits precessing at different speeds. The mode pattern speeds, Ωp, are eigen-values of a Fredholm integral operator. Its general analysis shows the existence of two types of eigen-functions, bar-like and spiral. The bars grow through the immediate action of mode gravitational fields on the stars near the corotation and the outer Lindblad resonance. The excitation of spirals is due to the inner Lindblad resonance. Apparently, the commonly used swing amplification mechanism does not play any role in the formation of both bar-modes and grand design spiral modes. However, it can be essential in the formation of transient excitations when the normal global mode cannot be organized.
No associations
LandOfFree
Towards the Unified Theory of Slow Modes in Stellar Galactic Discs 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 Towards the Unified Theory of Slow Modes in Stellar Galactic Discs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Towards the Unified Theory of Slow Modes in Stellar Galactic Discs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-896888