Ruling out a massive-assymptoic giant-branch star as the progenitor of supernova 2005cs

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dc.creatorEldridge, J. J.
dc.creatorMattila, S.
dc.creatorSmartt, S. J.
dc.date2007-01-05
dc.date.accessioned2026-07-07T11:00:37Z
dc.date.available2026-07-07T11:00:37Z
dc.descriptionWe calculate the predicted UBVRIJHK absolute magnitudes for models of supernova progenitors and apply the result to the case of supernova 2005cs. We agree with previous results that the initial mass of the star was of low, around 6 to 8 M(sun). However such stars are thought to go through second dredge-up to become AGB stars. We show that had this occurred to the progenitor of 2005cs it would have been observed in JHK pre-explosion images. The progenitor was not detected in these bands and therefore we conclude that it was not an AGB star. Furthermore if some AGB stars do produce supernovae they will have a clear signature in pre-explosion near-infrared images. Electron-capture supernovae are thought to occur in AGB stars, hence the implication is that 2005cs was not an electron-capture supernova but was the collapse of an iron core.
dc.description5 pages, 3 figures, Letter accepted for publication in MNRAS
dc.identifierhttps://arxiv.org/abs/astro-ph/0701152
dc.identifierhttp://arxiv.org/abs/astro-ph/0701152
dc.identifierMon.Not.Roy.Astron.Soc.Lett.376:L52-L56,2007
dc.identifierdoi:10.1111/j.1745-3933.2007.00285.x
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/187716
dc.subjectAstrophysics
dc.titleRuling out a massive-assymptoic giant-branch star as the progenitor of supernova 2005cs
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