The chemical evolution of star-forming viscous discs

Details The chemical evolution of star-forming viscous discs The chemical evolution of star-forming viscous discs

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238..133s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, May 1, 1989, p. 133-144. Research supported by the

Astronomy and Astrophysics

Astronomy

41

Chemical Evolution, Metallicity, Star Formation, Viscous Flow, Astronomical Models, Density Distribution, Gas Viscosity, Radial Flow, Spiral Galaxies

Scientific paper

The basic equations determining the chemical evolution of a star-forming visocus disk, taking into account the effects of radial flows and diffusion in the disk, are formulated. The metallicity distribution in the final stellar disks is determined. It is shown that, for parameter values which lead to the formation of stellar disks with nearly exponential surface density distributions, the disk's metallicity distributions are characterized by a 'universal' shape. The results of the model calculations are compared with observational data on the radial metallicity distribution in the old galactic disk. A reasonable agreement between observations and model results is found.

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