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A giant outburst tw...
A giant outburst two years before the core-collapse of a massive star
- Article/chapterEnglish2007
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Springer Science and Business Media LLC,2007
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LIBRIS-ID:oai:DiVA.org:su-57058
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-57058URI
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https://doi.org/10.1038/nature05825DOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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authorCount :35
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The death of massive stars produces a variety of supernovae, which are linked to the structure of the exploding stars(1,2). The detection of several precursor stars of type II supernovae has been reported ( see, for example, ref. 3), but we do not yet have direct information on the progenitors of the hydrogen-deficient type Ib and Ic supernovae. Here we report that the peculiar type Ib supernova SN 2006jc is spatially coincident with a bright optical transient(4) that occurred in 2004. Spectroscopic and photometric monitoring of the supernova leads us to suggest that the progenitor was a carbon-oxygen Wolf - Rayet star embedded within a helium-rich circumstellar medium. There are different possible explanations for this pre-explosion transient. It appears similar to the giant outbursts of luminous blue variable stars (LBVs) of 60 - 100 solar masses(5), but the progenitor of SN 2006jc was helium- and hydrogen-deficient ( unlike LBVs). An LBV-like outburst of a Wolf - Rayet star could be invoked, but this would be the first observational evidence of such a phenomenon. Alternatively, a massive binary system composed of an LBV that erupted in 2004, and a Wolf - Rayet star exploding as SN 2006jc, could explain the observations.
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Smartt, S. J.
(author)
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Mattila, S.
(author)
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Eldridge, J. J.
(author)
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Young, D.
(author)
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Itagaki, K.
(author)
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Yamaoka, H.
(author)
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Navasardyan, H.
(author)
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Valenti, S.
(author)
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Patat, F.
(author)
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Agnoletto, I.
(author)
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Augusteijn, T.
(author)
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Benetti, S.
(author)
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Cappellaro, E.
(author)
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Boles, T.
(author)
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Bonnet-Bidaud, J. -M
(author)
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Botticella, M. T.
(author)
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Bufano, F.
(author)
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Cao, C.
(author)
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Deng, J.
(author)
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Dennefeld, M.
(author)
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Elias-Rosa, N.
(author)
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Harutyunyan, A.
(author)
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Keenan, F. P.
(author)
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Iijima, T.
(author)
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Lorenzi, V.
(author)
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Mazzali, P. A.
(author)
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Meng, X.
(author)
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Nakano, S.
(author)
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Nielsen, T. B.
(author)
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Smoker, J. V.
(author)
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Stanishev, ValleryStockholms universitet,Fysikum(Swepub:su)vall
(author)
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Turatto, M.
(author)
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Xu, D.
(author)
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Zampieri, L.
(author)
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Stockholms universitetFysikum
(creator_code:org_t)
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In:Nature: Springer Science and Business Media LLC447:7146, s. 829-8320028-08361476-4687
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Pastorello, A.
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Smartt, S. J.
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Mattila, S.
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Eldridge, J. J.
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Young, D.
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Itagaki, K.
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show more...
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Yamaoka, H.
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Navasardyan, H.
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Valenti, S.
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Patat, F.
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Agnoletto, I.
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Augusteijn, T.
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Benetti, S.
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Cappellaro, E.
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Boles, T.
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Bonnet-Bidaud, J ...
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Botticella, M. T ...
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Bufano, F.
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Cao, C.
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Deng, J.
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Dennefeld, M.
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Elias-Rosa, N.
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Harutyunyan, A.
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Keenan, F. P.
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Iijima, T.
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Lorenzi, V.
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Mazzali, P. A.
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Meng, X.
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Nakano, S.
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Nielsen, T. B.
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Smoker, J. V.
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Stanishev, Valle ...
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Turatto, M.
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Xu, D.
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Zampieri, L.
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Stockholm University