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Interacting supernovae and supernova impostors. LSQ13zm: An outburst heralds the death of a massive star

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dc.contributor.author Tartaglia L.
dc.contributor.author Pastorello A.
dc.contributor.author Sullivan M.
dc.contributor.author Baltay C.
dc.contributor.author Rabinowitz D.
dc.contributor.author Nugent P.
dc.contributor.author Drake A.
dc.contributor.author Djorgovski S.
dc.contributor.author Gal-Yam A.
dc.contributor.author Fabrika S.
dc.contributor.author Barsukova E.
dc.contributor.author Goranskij V.
dc.contributor.author Valeev A.
dc.contributor.author Fatkhullin T.
dc.contributor.author Schulze S.
dc.contributor.author Mehner A.
dc.contributor.author Bauer F.
dc.contributor.author Taubenberger S.
dc.contributor.author Nordin J.
dc.contributor.author Valenti S.
dc.contributor.author Howell D.
dc.contributor.author Benetti S.
dc.contributor.author Cappellaro E.
dc.contributor.author Fasano G.
dc.contributor.author Elias-Rosa N.
dc.contributor.author Barbieri M.
dc.contributor.author Bettoni D.
dc.contributor.author Harutyunyan A.
dc.contributor.author Kangas T.
dc.contributor.author Kankare E.
dc.contributor.author Martin J.
dc.contributor.author Mattila S.
dc.contributor.author Morales-Garoffolo A.
dc.contributor.author Ochner P.
dc.contributor.author Rebbapragada U.
dc.contributor.author Terreran G.
dc.contributor.author Tomasella L.
dc.contributor.author Turatto M.
dc.contributor.author Verroi E.
dc.contributor.author Woźniak P.
dc.date.accessioned 2018-09-19T21:57:48Z
dc.date.available 2018-09-19T21:57:48Z
dc.date.issued 2016
dc.identifier.issn 0035-8711
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/144534
dc.description.abstract © 2016 The Authors.We report photometric and spectroscopic observations of the optical transient LSQ13zm. Historical data reveal the presence of an eruptive episode (that we label as '2013a') followed by a much brighter outburst ('2013b') three weeks later, that we argue to be the genuine supernova explosion. This sequence of events closely resemble those observed for SN 2010mc and (in 2012) SN 2009ip. The absolute magnitude reached by LSQ13zm during 2013a (MR = -14.87 ± 0.25mag) is comparable with those of supernova impostors, while that of the 2013b event (MR = -18.46 ± 0.21mag) is consistent with those of interacting supernovae. Our spectra reveal the presence of a dense and structured circumstellar medium, probably produced through numerous pre-supernova mass-loss events. In addition, we find evidence for high-velocity ejecta, with a fraction of gas expelled at more than 20 000km s-1. The spectra of LSQ13zm show remarkable similarity with those of well-studied core-collapse supernovae. From the analysis of the available photometric and spectroscopic data, we conclude that we first observed the last event of an eruptive sequence from a massive star, likely a Luminous Blue Variable, which a short time later exploded as a core-collapse supernova. The detailed analysis of archival images suggest that the host galaxy is a star-forming Blue Dwarf Compact Galaxy.
dc.relation.ispartofseries Monthly Notices of the Royal Astronomical Society
dc.subject Galaxies: individual: SDSS J102654.56+195254.8
dc.subject Stars: Mass-loss
dc.subject Supernovae: general
dc.subject Supernovae: individual: LSQ13zm
dc.subject Supernovae: individual: SN 2009ip
dc.subject Supernovae: individual: SN 2010mc
dc.title Interacting supernovae and supernova impostors. LSQ13zm: An outburst heralds the death of a massive star
dc.type Article
dc.relation.ispartofseries-issue 1
dc.relation.ispartofseries-volume 459
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 1039
dc.source.id SCOPUS00358711-2016-459-1-SID84970016565


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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