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The role of spiral arms in the chemical evolution of galactic disks
Published online by Cambridge University Press: 23 December 2005
Abstract
In grand design spiral galaxies, spiral arms play a dominant role in the oxygen enrichment rate, since type II supernovae are the main source of oxygen, and these supernovae only appear in spiral arms. The connection between the spiral structure and the star formation rate explains oxygen abundance gradients that rise outward, in the external regions of a number of galaxies.
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- © 2005 International Astronomical Union