On the properties of elliptical and spiral galaxies in a CDM scenario

Details On the properties of elliptical and spiral galaxies in a CDM scenario On the properties of elliptical and spiral galaxies in a CDM scenario

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.168..131c&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 168, no. 1, June 1990, p. 131-152. Research supported by CNR.

Astronomy and Astrophysics

Astrophysics

10

Cosmology, Elliptical Galaxies, Galactic Evolution, Spiral Galaxies, Angular Momentum, Astronomical Models, Mass Distribution, Polytropic Processes, Star Formation Rate

Scientific paper

The role of density perturbations in producing elliptical and spiral galaxies is investigated. The angular momentum-mass (J-M) relation in the cold dark matter scenario is discussed, and the extension of the use of this J-M method to polytropic spheres of any index n(p) in the range n(p) from zero to five is considered. The evolution of expanding, spherical-symmetric density perturbations taking the effects of rotation into consideration is addressed. Values of the radii at maximum expansion are calculated along with the related angular momenta for peaks with different heights.

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