The type IIB supernova 2011DH from a supergiant progenitor

cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloUniversidad Nacional de La Plata es
cic.versioninfo:eu-repo/semantics/submittedVersiones
dc.date.accessioned2016-09-13T15:03:10Z
dc.date.available2016-09-13T15:03:10Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/4220
dc.titleThe type IIB supernova 2011DH from a supergiant progenitoren
dc.typeArtículoes
dcterms.abstractA set of hydrodynamical models based on stellar evolutionary progenitors is used to study the nature of SN 2011dh. Our modeling suggests that a large progenitor star —with R 200 R⊙—, is needed to reproduce the early light curve of SN 2011dh. This is consistent with the suggestion that the yellow super-giant star detected at the location of the SN in deep pre-explosion images is the progenitor star. From the main peak of the bolometric light curve and expansion velocities we constrain the mass of the ejecta to be 2 M⊙, the explosion energy to be E = 6 − 10 × 1050 erg, and the 56Ni mass to be approximately 0.06 M⊙. The progenitor star was composed of a helium core of 3 to 4 M⊙ and a thin hydrogen-rich envelope of 0.1 M⊙ with a main sequence mass estimated to be in the range of 12–15 M⊙. Our models rule out progenitors with helium-core masses larger than 8 M⊙, which correspond to MZAMS & 25 M⊙. This suggests that a single star evolutionary scenario for SN 2011dh is unlikely.en
dcterms.creator.authorBersten, Melinaes
dcterms.creator.authorBenvenuto, Omar Gustavoes
dcterms.creator.authorNomoto, Ken'ichies
dcterms.creator.authorErgon, Mattiases
dcterms.creator.authorFolatelli, Gastónes
dcterms.creator.authorSollerman, Jesperes
dcterms.creator.authorBenetti, Stefanoes
dcterms.creator.authorBotticella, María Teresaes
dcterms.creator.authorFraser, Morganes
dcterms.creator.authorKotak, Rubinaes
dcterms.extent20 p.es
dcterms.identifier.otherDOI:10.1088/0004-637X/757/1/31es
dcterms.identifier.urlDocumento completoes
dcterms.isPartOf.issuevol. 757, nº 1es
dcterms.isPartOf.seriesAstrophysical Journales
dcterms.issued2012
dcterms.languageIngléses
dcterms.licenseAttribution 4.0 International (BY 4.0)es
dcterms.publisherIOPsciencees
dcterms.subjecthydrodynamicsen
dcterms.subjectSN 2011dhen
dcterms.subjectsupernovaes
dcterms.subject.materiaAstronomíaes
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