A uniformly valid asymptotic density-potential relation for spiral galaxies.

Details A uniformly valid asymptotic density-potential relation for spiral galaxies. A uniformly valid asymptotic density-potential relation for spiral galaxies.

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989acaps...9..127y&link_type=abstract

Acta Astrophys. Sin., Vol. 9, No. 2, p. 127 - 136

Astronomy and Astrophysics

Astrophysics

1

Spiral Galaxies: Density Waves, Spiral Galaxies: Potential Theory

Scientific paper

An asymptotic relation between density perturbation and potential perturbations which is uniformly valid for arbitrary pitch angle (0 ≤ |β| ≤ π/2) for spiral galaxies with the number of spiral arms m ≥ 2, is given. For the cases of small pitch angle (|β|≪ 1), it is reduced to various known asymptotic relations. When |β| is not small, this new result is suitable for the discussion of open spiral waves forming barred spiral galaxies.

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