Limits of the halo component in spiral galaxies

Details Limits of the halo component in spiral galaxies Limits of the halo component in spiral galaxies

Jun 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....99..144t&link_type=abstract

Astronomy and Astrophysics, vol. 99, no. 1, June 1981, p. 144-151.

Astronomy and Astrophysics

Astrophysics

1

Density Wave Model, Galactic Structure, Halos, Spiral Galaxies, Astronomical Models, Astrophysics

Scientific paper

The effects of various assumed halos on the dynamics of spiral galaxies are studied, assuming that the halo population does not participate in the spiral arms because of the large dispersion of halo velocities. The models of Schmidt (1965) and of Miyamoto and Nagai (1975) are used as an axisymmetric background, and spherical halos are superimposed on the models, so that in a sphere of a 20 kpc radius, there is a given amount of mass following three possible density laws. Conditions are considered under which a density wave satisfying the Lynden Bell-Kalnajs (1972) dispersion relation passes through corotation, and some limits of the halo component of the galaxy mass are found

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