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Dynamics of Elliptical Galaxies
Science, 1993Elliptical galaxies were once thought to be similar in their structure and dynamics to rotationally flattened bodies like stars. The discovery that elliptical galaxies rotate much more slowly than a fluid body with the same shape has led to a qualitative change in our understanding of the dynamics of these systems.
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Hydrodynamical models of elliptical galaxies
Celestial Mechanics, 1988Hydrodynamical models of elliptical galaxies can be obtained by means of Jeans’equations (see for example Ortega and de Freitas Pacheco, 1986). Following this approach, we consider a mass distribution in steady state which approximates de Vaucouleurs’ r1/4 law, and assume the principal axes of the velocity distribution to be parallel to unitary vectors
E. Moreno, P. Pişmiş
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Elliptical galaxies under perturbation
Astrophysics and Space Science, 1986Three experiments on the initially slightly flattened spheroids (e = 0.45) have been made. The first one is run without perturbation and the others with perturbation. The results have shown that the spheroid without perturbation will evolve to nearly sphere and the other two will almost keep the originally projected shape after perturbation and ...
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Origin of the Structure Difference Between Elliptical Galaxies and Dwarf Elliptical Galaxies
1999According to the observations of nearby elliptical galaxies, there is a clear distinction in structural and chemical quantities between dwarf ellipticals and normal ellipticals in spite of their morphological similarity. The central concentration of dwarf ellipticals is relatively low and their luminosity profiles are best fitted by an exponential ...
Masao Mori +2 more
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Ellipticity and twisting of isophotes in elliptical galaxies
1979The study of the ellipticity profiles in a sample of elliptical galaxies and the analysis of previous results makes it possible to establish a classification scheme in five classes as follows: increasing ellipticity, decreasing, with maximum, with minimum and constant.
BERTOLA, FRANCESCO, GALLETTA, GIUSEPPE
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A unified scenario for the origin of spiral and elliptical galaxy structural scaling laws
Astronomy and Astrophysics, 2021Ismael Ferrero +2 more
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Stellar Population Diagnostics of Elliptical Galaxy Formation
Annual Review of Astronomy and Astrophysics, 2006Alvio Renzini
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