Evolution of compact groups and the formation of elliptical galaxies

Details Evolution of compact groups and the formation of elliptical galaxies Evolution of compact groups and the formation of elliptical galaxies

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989natur.338..123b&link_type=abstract

Nature (ISSN 0028-0836), vol. 338, March 9, 1989, p. 123-126.

Astronomy and Astrophysics

Astronomy

288

Compact Galaxies, Elliptical Galaxies, Galactic Evolution, Astronomical Catalogs, Brightness Distribution, Gravitational Effects, Hierarchies

Scientific paper

A numerical simulation of the merging of a compact group of galaxies is reported. Starting from a hierarchy of galaxies, the compact group evolved into a system dominated by a central merger remnant, which then accreted the remaining members. The whole process took only a few orbital times. If compact groups are interpreted as transient phases in the dynamical evolution of looser groups, the merger remnants they leave behind exemplify galaxy formation at the present epoch.

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