Stellar velocity perturbations in colliding galaxies. II

Details Stellar velocity perturbations in colliding galaxies. II Stellar velocity perturbations in colliding galaxies. II

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983basi...11..221n&link_type=abstract

Astronomical Society of India, Bulletin, vol. 11, Sept. 1983, p. 221-225.

Astronomy and Astrophysics

Astronomy

7

Celestial Mechanics, Galaxies, Stellar Motions, Collisions, Velocity

Scientific paper

An analytical relationship is obtained between stellar velocity perturbations and the eccentricity of the galactic orbit, under an impulsive approximation for a hyperbolic encounter between two spherical galaxies. Under the assumption that the motion of the stars may be neglected in comparison with the orbital motion of the galaxies, it is found that the velocity perturbations in colliding galaxies are symmetric with respect to elliptical and parabolic orbits, and asymmetric for hyperbolic orbits, the asymmetry increasing with orbital eccentricity.

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