Formation of bars in galaxies

Details Formation of bars in galaxies Formation of bars in galaxies

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987afz....26..421g&link_type=abstract

(Astrofizika, vol. 26, May-June 1987, p. 421-429) Astrophysics (ISSN 0571-7132), vol. 26, no. 3, Nov. 1987, p. 255-260. Translat

Astronomy and Astrophysics

Astrophysics

Astronomical Models, Barred Galaxies, Galactic Evolution, Galactic Nuclei, Spiral Galaxies, Dynamic Models, Gas Dynamics

Scientific paper

A possible mechanism of bar formation in an explosive process is investigated with consideration given to the dynamical coupling between the bars and spiral arms. In the present calculation, a model of a needle-shaped body of homogeneous density with the long axis oriented in the plane of the galaxy is used; the central body undergoing the cataclysm is replaced by a gas-filled cylinder. The motion considered creates a shock front that evolves into a spiral shape, though in the region of the rear of the bar, two rarefaction waves will exist.

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