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| Paper: |
Inhomogeneous halo collapse and globular cluster metallicities |
| Volume: |
13, The Formation and Evolution of Star Clusters |
| Page: |
584 |
| Authors: |
Malinie, G.; Hartmann, D. H.; Mathews, G. J. |
| Abstract: |
The frequency distribution of the low-metallicity subpopulation of Galactic globular clusters is used here to study the chemical evolution of the halo. An alternative evolution to the problem of that distribution is proposed which considers inhomogeneous collapse of a centrally condensed protogalaxy. It is shown that under such circumstances the observed abundance distribution function can be reproduced without needing to decrease the yield. This is due to the fact that central density enhancements cause differential processing of gas into stars, an effect that is obtained whether the density gradient is of promordial origin or develops later in the collapse due to the pressure support. The observed metallicity distribution function of halo globular clusters can be reproduced by inhomogeneous models using a solar yield and in inhomogeneous density profile characterized by n about 3. |
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