Dissipative merging of galaxies

Details Dissipative merging of galaxies Dissipative merging of galaxies

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..247u&link_type=abstract

In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 247-248 (SEE N93-26706 10-90)

Astronomy and Astrophysics

Astronomy

Astronomical Models, Elliptical Galaxies, Galactic Evolution, Interacting Galaxies, Hydrodynamics, Many Body Problem, Spiral Galaxies

Scientific paper

The galaxy merging is investigated with hydrodynamical processes taken into account. For this purpose, the 3D calculations are performed by the use of a smoothed particle hydrodynamics (SPH) scheme combined with an N-body scheme. In these calculations, we find a new merging criterion and the dependence of the central phase space density of merger remnants upon the gas fraction in progenitors. It is concluded that ellipticals can be formed just by merging of fairly gas-rich primordial galaxies, not ordinary spiral galaxies.

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