University of Cambridge > > Institute of Astronomy Colloquia >  COSMIC METAL ENRICHMENT


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After the Bing Bang the cosmic gas had a composition which was (virtually) free of heavy elements. Yet, every single parcel of gas that we can probe today with our most powerful telescopes shows the signs of considerable amounts of metals, up to the highest redshifts. When these metals where first produced, by what sources, and how these atomic species traveled away from their production sites are among the most challenging puzzles in current cosmological scenarios. I will discuss the open problems and the corresponding experimental data in detail. I will then propose viable explanations that eventually might results in a coherent picture of the history of cosmic metal enrichment.

This talk is part of the Institute of Astronomy Colloquia series.

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