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On the Progenitor and Early Evolution of the Type II Supernova 2009kr
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2010 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 714, L280-L284 p.Article in journal (Refereed) Published
Abstract [en]

We identify a source coincident with SN 2009kr in Hubble Space Telescope pre-explosion images. The object appears to be a single point source with an intrinsic color V - I = 1.1 ± 0.25 and MV = -7.6 ± 0.6. If this is a single star, it would be a yellow supergiant of log L/L sun ~ 5.1 and a mass of 15+5 -4 M sun. The spatial resolution does not allow us yet to definitively determine if the progenitor object is a single star, a binary system, or a compact cluster. We show that the early light curve is similar to a Type IIL SN, but the prominent Hα P-Cygni profiles and the signature of the end of a recombination phase are reminiscent of a Type IIP. The evolution of the expanding ejecta will play an important role in understanding the progenitor object.

Place, publisher, year, edition, pages
2010. Vol. 714, L280-L284 p.
Keyword [en]
galaxies: individual: NGC 1832, stars: evolution, supernovae: general, supernovae: individual: SN 2009kr
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Natural Sciences
URN: urn:nbn:se:su:diva-49535DOI: 10.1088/2041-8205/714/2/L280ISI: 000277232000021OAI: diva2:378136


Available from: 2010-12-15 Created: 2010-12-15 Last updated: 2013-03-20Bibliographically approved

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Ergon, MattiasSollerman, Jesper
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Department of AstronomyThe Oskar Klein Centre for Cosmo Particle Physics (OKC)
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