On the dynamical evolution of spiral galaxies

Details On the dynamical evolution of spiral galaxies On the dynamical evolution of spiral galaxies

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...127..145b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 127, no. 1, Oct. 1983, p. 145-148. Research supported by the Consiglio Naziona

Astronomy and Astrophysics

Astrophysics

15

Galactic Evolution, Galactic Rotation, Galactic Structure, Spiral Galaxies, Density Wave Model, Hubble Constant, Universal Time

Scientific paper

The time scale for galaxy evolution as induced by a spiral mode is evaluated and found to be of the order of 200 times the rotation period just beyond corotation, thus usually larger than the Hubble time. The very slow evolution indicated by the author's present results strengthens the application of a linear density wave theory to the study of spiral galaxies based on the hypothesis of quasi-stationary spiral structure.

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