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Cold gas in elliptical galaxies
Monthly Notices of the Royal Astronomical Society, 2001 We explore the evolution of the cold gas (molecular and neutral hydrogen) of elliptical galaxies and merger remnants ordered into a time sequence on the basis of spectroscopic age estimates.
A Georgakakis +2 more
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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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Formation, evolution and properties of isolated field elliptical galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2010 We study the properties, evolution and formation mechanisms of isolated field elliptical (IfE) galaxies. We create a ‘mock’ catalogue of IfE galaxies from the Millennium Simulation Galaxy Catalogue, and trace their merging histories.
Pasi Nurmi, Enn Saar, Saar Enn
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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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