Changes in binding energy of interacting galaxies

Details Changes in binding energy of interacting galaxies Changes in binding energy of interacting galaxies

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.194..245r&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 194, no. 2, p. 245-250.

Astronomy and Astrophysics

Astrophysics

Astronomical Models, Celestial Mechanics, Galactic Structure, Many Body Problem, Least Squares Method, Scaling Laws

Scientific paper

A formula is derived that describes the fractional change in binding energy of a galaxy that is in an impulsive collision with another galaxy. The equation includes variables for the masses of the perturber and the perturbed galaxy, the relative velocity of the perturber at minimum separation, and dynamical radius. The expression is shown to be applicable to all cases of interpenetrating fast collisions of galaxies with equivalent radii.

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