Past and present metal abundance gradient in the galactic disc |
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| Authors: | M Grenon |
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| Institution: | (1) Observatoire de Geneve, CH-1290 Sauverny, Switzerland |
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| Abstract: | A critical discussion of some determinations of metal abundance gradient in the galactic disc is presented with an attempt
to homogenize the results related to local and large-scale gradients. A new estimation of the palaeogradient in intermediate
and old disc population is presented. The gradient is found to depend on galactocentric distance, and to be nearly constant
with time during the lifetime of the galactic disc. |
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| Keywords: | Galaxy metal abundance gradient |
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