Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986cha%26a..10..162b&link_type=abstract
Chinese Astronomy and Astrophysics, Volume 10, Issue 2, p. 162-167.
Astronomy and Astrophysics
Astrophysics
Scientific paper
We consider a three-dimensional model of spiral arms, which are in the form of logarithmic spirals in the galactic plane and falling off exponentially in the perpendicular direction. We derive an analytic solution of the gravitational potential corresponding to this density perturbation. We discuss the effect of the finite thickness on the spiral pattern and the question of stability of the spiral arms.
Bi Hong-Guang
Li Zong-yun
Peng Qiu-he
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