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| Paper: |
Supernova Rates in Galaxy Clusters |
| Volume: |
342, 1604-2004: Supernovae as Cosmological Lighthouses |
| Page: |
149 |
| Authors: |
Maoz, D. |
| Abstract: |
Measurements of supernova (SN) rates in different environments and redshifts can shed light on the nature of SN-Ia progenitors, star formation history, and chemical enrichment history. I summarize some recent work by our group in this area, and discuss the implications. The current evidence favors production of most of the iron in the intra-cluster medium (and perhaps everywhere) by core-collapse SNe, rather than SNe-Ia. These SNe may have been produced by the first, top-heavy-IMF, generation of stars that reionized the Universe. Improved rate measurements can sharpen the picture, and I describe our recent efforts in this direction. |
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