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The structure and evolution of galacto-detonation waves - Some analytic results in sequential star formation models of spiral galaxiesWaves of star formation in a uniform, differentially rotating disk galaxy are treated analytically as a propagating detonation wave front. It is shown, that if single solitary waves could be excited, they would evolve asymptotically to one of two stable spiral forms, each of which rotates with a fixed pattern speed. Simple numerical solutions confirm these results. However, the pattern of waves that develop naturally from an initially localized disturbance is more complex and dies out within a few rotation periods. These results suggest a conclusive observational test for deciding whether sequential star formation is an important determinant of spiral structure in some class of galaxies.
Document ID
19820061054
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Cowie, L. L. (MIT Cambridge, MA, United States)
Rybicki, G. B. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Date Acquired
August 10, 2013
Publication Date
September 15, 1982
Publication Information
Publication: Astrophysical Journal
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-208
CONTRACT_GRANT: NSG-7643
CONTRACT_GRANT: NGL-22-009-638
Distribution Limits
Public
Copyright
Other