Chemical evolution of viscously evolving galactic discs
- 1 May 1989
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 238 (2) , 283-292
- https://doi.org/10.1093/mnras/238.2.283
Abstract
We investigate the ability of the Lin–Pringle model of galactic disc formation to reproduce the observed radial distributions of total gas surface density and metals in disc galaxies. We find that a satisfactory fit is obtained provided only that there exists an outer cut-off to the star-forming disc beyond which gas is allowed to viscously evolve. The metallicity gradient is then established by radial inflow of gas from beyond this cut-off.Keywords
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