The nature of the evolution of galaxies by mergers

Details The nature of the evolution of galaxies by mergers The nature of the evolution of galaxies by mergers

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..255c&link_type=abstract

In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 255-256 (SEE N93-26706 10-90)

Astronomy and Astrophysics

Astronomy

Astronomical Models, Elliptical Galaxies, Galactic Evolution, Interacting Galaxies, Collisions, Regularity

Scientific paper

The merger theory for the formation of elliptical galaxies is examined by conducting a dynamical study of the expected frequency of merging galaxies on the basis of the collisional theory, using galaxy models without halos. The expected merger rates obtained on the basis of the collisional theory fall about a magnitude below the observational value in the present epoch. In the light of current observational evidence and the results obtained, a marked regularity in the formation of ellipticals is indicated, followed by secular evolution by mergers.

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