The chemical composition of the halo and evolutionary problems |
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| Authors: | S Ninkovi? M ?irkovi? |
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| Institution: | (1) Astronomical Observatory, 11160 Beograd-74, Yugoslavia |
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| Abstract: | The chemical composition of the Milky-Way halo is studied on the basis of a sample of metal-poor (logarithmic metallicity
less than –1) globular clusters. The histogram obtained may be interpreted in the terms of the classical galaxy formation
theory of Eggen, Lynden-Bell and Sandage. Interestingly enough, this is in a rough agreement with the data on metallicity
of high-redshift damped Ly-alpha and Ly-alpha forest systems. This may serve the important purpose of constraining the nature
and the formation timescale of MACHOs discovered through gravitational microlensing experiments.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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