Gravitational asymmetries in gaseous disks.

Details Gravitational asymmetries in gaseous disks. Gravitational asymmetries in gaseous disks.

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apl%26c..36..363j&link_type=abstract

Astrophysical Letters and Communications, Vol. 36, Nos. 1 - 6, p. 363 - 366

Astronomy and Astrophysics

Astrophysics

1

Spiral Galaxies: Stellar Dynamics, Spiral Galaxies: Gas Dynamics

Scientific paper

The authors report preliminary results of self-gravitating simulations of spiral galaxies modeled by two components, stellar and gaseous disks. One of the objectives of this work is to study asymmetries in the distribution of the gas, features observed for a number of spiral galaxies. The gas disk is simulated by the Beam-Scheme method, where the gas is considered as a fluid. The results suggest that very concentrated galactic disks can be unstable to the one-armed (m = 1) spiral perturbation, which may explain the asymmetric patterns observed in isolated galaxies.

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