SN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curve

Vista sencilla de ítem
dc.contributor.authorGutiérrez, C.P.
dc.contributor.authorPastorello, A.
dc.contributor.authorBersten, M.
dc.contributor.authorBenetti, S.
dc.contributor.authorOrellana, M.
dc.contributor.authorFiore, A.
dc.contributor.authorKaramehmetoglu, E.
dc.contributor.authorKravtsov, T.
dc.contributor.authorReguitti, A.
dc.contributor.authorReynolds, T.M.
dc.contributor.authorValerin, G.
dc.contributor.authorMazzali, P.
dc.contributor.authorSullivan, M.
dc.contributor.authorCai, Y.-Z.
dc.contributor.authorElias-Rosa, N.
dc.contributor.authorFraser, M.
dc.contributor.authorHsiao, E.Y.
dc.contributor.authorKankare, E.
dc.contributor.authorKotak, R.
dc.contributor.authorKuncarayakti, H.
dc.contributor.authorLi, Z.
dc.contributor.authorMattila, S.
dc.contributor.authorMo, J.
dc.contributor.authorMoran, S
dc.contributor.authorOchner, P.
dc.contributor.authorShahbandeh, M.
dc.contributor.authorTomasella, L.
dc.contributor.authorWang, X.
dc.contributor.authorYan, S.
dc.contributor.authorZhang, J.
dc.contributor.authorZhang, T.
dc.contributor.authorStritzinger, M. D.
dc.date.accessioned2023-04-03T20:38:43Z
dc.date.available2023-04-03T20:38:43Z
dc.date.issued2022-09
dc.descriptionIndexación: Scopus.es
dc.description.abstractWe present the analysis of SN 2020wnt, an unusual hydrogen-poor superluminous supernova (SLSN-I), at a redshift of 0.032. The light curves of SN 2020wnt are characterized by an early bump lasting ∼5 d, followed by a bright main peak. The SN reaches a peak absolute magnitude of Mmax r = −20.52 ± 0.03 mag at ∼77.5 d from explosion. This magnitude is at the lower end of the luminosity distribution of SLSNe-I, but the rise-time is one of the longest reported to date. Unlike other SLSNe-I, the spectra of SN 2020wnt do not show O II, but strong lines of C II and Si II are detected. Spectroscopically, SN 2020wnt resembles the Type Ic SN 2007gr, but its evolution is significantly slower. Comparing the bolometric light curve to hydrodynamical models, we find that SN 2020wnt luminosity can be explained by radioactive powering. The progenitor of SN 2020wnt is likely a massive and extended star with a pre-SN mass of 80 M and a pre-SN radius of 15 R that experiences a very energetic explosion of 45 × 1051 erg, producing 4 M of 56Ni. In this framework, the first peak results from a post-shock cooling phase for an extended progenitor, and the luminous main peak is due to a large nickel production. These characteristics are compatible with the pair-instability SN scenario. We note, however, that a significant contribution of interaction with circumstellar material cannot be ruled out.es
dc.description.urihttps://academic-oup-com.recursosbiblioteca.unab.cl/mnras/article/517/2/2056/6717660
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, Volume 517, Issue 2, December 2022, Pages 2056–2075es
dc.identifier.doi10.1093/mnras/stac2747
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/48144
dc.language.isoen
dc.publisherOxford University Presses
dc.rights.licenseAtribution 4.0 International (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subjectSupernovae Generales
dc.subjectSupernovae Individuales
dc.subjectSN 2020wntes
dc.titleSN 2020wnt: a slow-evolving carbon-rich superluminous supernova with no O II lines and a bumpy light curvees
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
Gutierrez_SN_2020wnt_a_slow-evolving_carbon-rich_superluminous_supernova
Tamaño:
6.71 MB
Formato:
Adobe Portable Document Format
Descripción:
TEXTO COMPLETO EN INGLES
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista