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The Most Rapidly Declining Type I Supernova 2019bkc/ATLAS19dqr

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cris.lastimport.scopus2024-02-12T19:50:22Z
dc.abstract.enWe report observations of the hydrogen-deficient supernova (SN) 2019bkc/ATLAS19dqr. With B- and r-band decline between peak and 10 days post peak of ${\rm{\Delta }}{m}_{10}(B)=5.24\pm 0.07$ mag and ${\rm{\Delta }}{m}_{10}(r)=3.85\pm 0.10$ mag, respectively, SN 2019bkc is the most rapidly declining SN I discovered so far. While its closest matches are the rapidly declining SN 2005ek and SN 2010X, the light curves and spectra of SN 2019bkc show some unprecedented characteristics. SN 2019bkc appears hostless, with no identifiable host galaxy near its location, although it may be associated with the galaxy cluster MKW1 at z = 0.02. We evaluate a number of existing models of fast-evolving SNe, and we find that none of them can satisfactorily explain all aspects of SN 2019bkc observations.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorChen, Ping
dc.contributor.authorDong, Subo
dc.contributor.authorStritzinger, M. D.
dc.contributor.authorHolmbo, Simon
dc.contributor.authorStrader, Jay
dc.contributor.authorKochanek, C. S.
dc.contributor.authorPeng, Eric W.
dc.contributor.authorBenetti, S.
dc.contributor.authorBersier, D.
dc.contributor.authorBrownsberger, Sasha
dc.contributor.authorBuckley, David A. H.
dc.contributor.authorGromadzki, Mariusz
dc.contributor.authorMoran, Shane
dc.contributor.authorPastorello, A.
dc.contributor.authorAydi, Elias
dc.contributor.authorBose, Subhash
dc.contributor.authorConnor, Thomas
dc.contributor.authorBoutsia, K.
dc.contributor.authorMille, F. Di
dc.contributor.authorElias-Rosa, N.
dc.contributor.authorFrench, K. Decker
dc.contributor.authorHoloien, Thomas W. -S.
dc.contributor.authorMattila, Seppo
dc.contributor.authorShappee, B. J.
dc.contributor.authorStark, Antony A.
dc.contributor.authorSwihart, Samuel J.
dc.date.accessioned2024-01-26T10:28:03Z
dc.date.available2024-01-26T10:28:03Z
dc.date.copyright2019-05-06
dc.date.issued2020
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financePublikacja bezkosztowa
dc.description.number1
dc.description.versionORIGINAL_AUTHOR
dc.description.volume889
dc.identifier.doi10.3847/2041-8213/AB62A4
dc.identifier.issn2041-8205
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/122703
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2020ApJ...889L...6C
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstrophysical Journal Letters
dc.relation.pagesL6
dc.rightsOther
dc.sciencecloudnosend
dc.titleThe Most Rapidly Declining Type I Supernova 2019bkc/ATLAS19dqr
dc.typeJournalArticle
dspace.entity.typePublication