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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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On the shape of elliptical galaxies
Journal of Astrophysics and Astronomy, 1983We propose a test for the existence of prolate elliptical galaxies based on the properties of the photometric parameters introduced in the Cordoba surface photometry.
J. L. Sérsic, V. M. Arreguine
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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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The formation pathways of compact elliptical galaxies
Monthly Notices of the Royal Astronomical Society, 2023Duncan A Forbes +2 more
exaly
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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Formation and evolution of elliptical galaxies
Monthly Notices of the Royal Astronomical Society, 2002Cesare Chiosi, Giovanni Carraro
exaly
The rapid assembly of an elliptical galaxy of 400 billion solar masses at a redshift of 2.3
Nature, 2013Rob Ivison +2 more
exaly