Chemical evolution of viscously evolving galactic discs

Details Chemical evolution of viscously evolving galactic discs Chemical evolution of viscously evolving galactic discs

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238..283c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, May 1, 1989, p. 283-292. Research supported by NAS

Astronomy and Astrophysics

Astronomy

69

Chemical Evolution, Galactic Evolution, Galactic Structure, Gas Dynamics, Star Formation, Astronomical Models, Gas Density, Gas Viscosity, Metallicity, Radial Velocity

Scientific paper

The ability of the Lin-Pringle (1987) model of galactic disk formation to reproduce the observed radial distributions of total gas surface density and metals in disk galaxies is investigated. It is found that a satisfactory fit is obtained provided that there exists an outer cut-off to the star-forming disk beyond which gas is allowed to viscously evolve. The metallicity gradient is then established by radial inflow of gas from beyond this cut-off.

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