Model gas flows in selected barred spiral galaxies

Details Model gas flows in selected barred spiral galaxies Model gas flows in selected barred spiral galaxies

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nyasa.596..174h&link_type=abstract

(Galactic models; Proceedings of the 4th Florida Workshop on Nonlinear Dynamics, Gainesville, FL, Mar. 1, 2, 1989. A91-30826 12-

Astronomy and Astrophysics

Astronomy

3

Astronomical Models, Barred Galaxies, Gas Flow, H I Regions, Very Large Array (Vla), Dynamic Models, Galactic Rotation, Galactic Structure

Scientific paper

Method for deriving the potentials of various stellar components of barred spiral galaxies are applied here to model gas flows in such galaxies. The results show that the pattern speeds of perturbations must be rapid, placing corotation just beyond the ends of the bars. For galaxies possessing central H I depressions, physical bars having masses greater than about 10 percent of the disk mass must be present. When rotated rapidly, triaxial model bars evacuate much of the gas from the bar regions. For a model bar of fixed mass and pattern speed, flattening of the triaxial figure does not change the gas response significantly.

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