Hydrodynamic constraints on the radial structure of late-type galaxy disks

Details Hydrodynamic constraints on the radial structure of late-type galaxy disks Hydrodynamic constraints on the radial structure of late-type galaxy disks

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...368..348s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 368, Feb. 20, 1991, p. 348-365.

Astronomy and Astrophysics

Astrophysics

33

Galactic Evolution, Galactic Structure, Gas Dynamics, Radial Flow, Density Distribution, Gravitational Effects, Interstellar Matter, Star Formation

Scientific paper

Hydrodynamic constraints or driving forces that determine steady disk gas radial distributions are discussed, and observed gas distributions in late-type disks and correlations with disk rotation curves are analyzed. Evidence for quasi-steady states with radial gas flow is examined, and gas consumption rates and stellar density profiles are discussed, as are models of steady states with radial flows and more extreme 'driven' disks. The results indicate that the radial structure of a gas-rich disk can be simply and consistently accounted for as an azimuthally averaged hydrodynamic steady state in a fixed gravitational potential.

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