Chemical enrichment in the early galaxy |
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| Authors: | Birgitta NordstrÖm |
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| Institution: | (1) Lund Observatory, Box 43, SE-22100 Lund, Sweden;(2) Niels Bohr Institute, Blegdamsvej 17, DK-2100 Copenhagen, Denmark |
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| Abstract: | New, precise abundance data for a large number of elements in a growing sample of extremely metal-poor stars are accumulating
from the new 8-m telescopes. Combined with theoretical models, these results advance our understanding of the first generations
of stars, whose nucleosynthesis products are fossilised in the oldest stars we see today and thus give clues to the earliest
phases of evolution in the Galaxy. In particular, the heaviest elements give us insight into the different neutron capture
mechanisms and the stellar sites where such elements could be produced. They also afford an independent way to determine the
age of the Galaxy, by radioactive chronology.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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| Keywords: | Galaxy halo stars chemical abundances nucleosynthesis radioactive cosmochronolgy Galactic evolution heavy elements |
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