Constraints on SN Ia Progenitors and ICM enrichment from field and cluster SN rates

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dc.creatorMaoz, Dan
dc.creatorGal-Yam, Avishay
dc.date2003-10-27
dc.date.accessioned2026-07-07T02:10:52Z
dc.date.available2026-07-07T02:10:52Z
dc.descriptionThe iron mass in galaxy clusters is about 6 times larger than could have been produced by core-collapse SNe, assuming the stars in cluster galaxies formed with a standard IMF. Type-Ia SNe have been proposed as the alternative dominant iron source. We use our HST measurements of the cluster SN-Ia rate at high redshift to study the cluster iron enrichment scenario. The measurements can constrain the star-formation epoch and the SN-Ia progenitor models via the mean delay time between the formation of a stellar population and the explosion of some of its members as SNe-Ia. The low observed rate of cluster SNe-Ia at z~1 pushes back the star-formation epoch in clusters to z>2, and implies a short delay time. We also show a related analysis for high-z field SNe which implies, under some conditions, a long SN-Ia delay time. Thus, cluster enrichment by core-collapse SNe from a top-heavy IMF may remain the only viable option.
dc.descriptionTo be published in the proceedings of IAU Colloquium 192 ``Supernovae (10 years of SN1993J)'', Valencia, Spain, eds. J.M. Marcaide and K.W. Weiler. For further details see astro-ph/0309796 and astro-ph/0309797
dc.identifierhttps://arxiv.org/abs/astro-ph/0310768
dc.identifierhttp://arxiv.org/abs/astro-ph/0310768
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/6883
dc.subjectAstrophysics
dc.titleConstraints on SN Ia Progenitors and ICM enrichment from field and cluster SN rates
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