Supernova Rates in Galaxy Clusters

Details Supernova Rates in Galaxy Clusters Supernova Rates in Galaxy Clusters

2005-01-23

arxiv.org/abs/astro-ph/0501492v1

Astronomy and Astrophysics

Astrophysics

To appear in "1604-2004: Supernovae as Cosmological Lighthouses", eds. Turatto et al., ASP conference Series

Scientific paper

Measurements of 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 ICM (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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