Stellar dynamics of spiral galaxies - Self-consistent models

Details Stellar dynamics of spiral galaxies - Self-consistent models Stellar dynamics of spiral galaxies - Self-consistent models

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...197...83c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 197, no. 1-2, May 1988, p. 83-90.

Statistics

Computation

59

Astrodynamics, Astronomical Models, Barred Galaxies, Molecular Clouds, Spiral Galaxies, Stellar Motions, Computational Astrophysics, Corotation, Self Consistent Fields

Scientific paper

The authors study the main factors that influence the self-consistency of model spiral galaxies. For a fixed amplitude of the spiral these are the truncation of the spiral arms near the 4/1 resonance, the central density and the scale length of the disk, the relative importance of the higher harmonics, the thickness of the spirals along the z-direction and the dispersion of velocities. In particular, through the inclusion of the velocity dispersion the authors find good self-consistency in the inner parts of the galaxy, where rather large discrepancies were found in an earlier paper. By changing the various parameters a "best" self-consistent model to represent the galaxy NGC 5247 is found.

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