Dwarf elliptical galaxies

Details Dwarf elliptical galaxies Dwarf elliptical galaxies

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...268l..75g&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 268, May 15, 1983, p. L75-L78.

Astronomy and Astrophysics

Astrophysics

53

Dwarf Galaxies, Elliptical Galaxies, Galactic Evolution, Many Body Problem, Virgo Galactic Cluster, Density Distribution, Equations Of Motion, Stellar Evolution, Stellar Systems, Tides

Scientific paper

It is proposed that dwarf elliptical galaxies are the bound remnants of more massive stellar systems, such as a parent galaxy which has lost more than half its mass in gas ejection during a burst of star formation, or an unbound tidal debris produced during the interaction of two giant galaxies. N-body calculations were performed to study the evolution of stellar systems with positive energy. The results indicate the existence of a power-law relation between the mass and the density sigma of the fragments over a large range of values of sigma, consistent with recent observational evidence. The calculations predict a mass-metallicity relation for the fragments. The amount of unbound material in the Virgo Cluster that is genetically connected with its dwarf elliptical galaxies is not detectable at present.

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