Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...260..504c&link_type=abstract
Astrophysical Journal, Part 1, vol. 260, Sept. 15, 1982, p. 504-511.
Astronomy and Astrophysics
Astrophysics
16
Astronomical Models, Detonation Waves, Galactic Structure, Spiral Galaxies, Star Formation, Rotating Disks, Solitary Waves
Scientific paper
Waves 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.
Cowie Lennox L.
Rybicki George B.
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