Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...225l.101h&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 225, Nov. 1, 1978, p. L101-L105.
Astronomy and Astrophysics
Astrophysics
32
Astronomical Models, Galactic Structure, Gas Flow, Spiral Galaxies, Astrodynamics, Astronomical Spectroscopy, Flow Geometry, Flow Velocity, Hydrodynamics, Velocity Measurement
Scientific paper
Line-of-sight gas velocities calculated from a numerical hydrodynamical model of a barred spiral galaxy are compared with the observations and models made by Peterson, Rubin, Ford, and Thonnard of the gas flow in NGC 5383. The hydrodynamical model provides a somewhat better fit to the observations of NGC 5383 than does their symmetric, warped-disk model. It is argued that the basic model appropriate to understanding the gas motions in barred spiral galaxies is not circular rotation but rather a characteristic elliptical pattern of flow.
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