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dc.contributor.authorGrayling, M.
dc.contributor.authorGalbany González, Lluis 
dc.contributor.authorDES Collaboration
dc.date.accessioned2021-09-27T12:08:32Z
dc.date.available2021-09-27T12:08:32Z
dc.date.issued2021-05-24
dc.identifier.citationM Grayling... [et al.]. Understanding the extreme luminosity of DES14X2fna, Monthly Notices of the Royal Astronomical Society, Volume 505, Issue 3, August 2021, Pages 3950–3967, [https://doi.org/10.1093/mnras/stab1478]es_ES
dc.identifier.urihttp://hdl.handle.net/10481/70465
dc.descriptionThis work was supported by the Science and Technology Facilities Council [grant number ST/P006760/1] through the DISCnet Centre for Doctoral Training. MS acknowledges support from EU/FP7-ERC grant 615929. LG was funded by the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 839090. This work has been partially supported by the Spanish grant PGC2018-095317-B-C21 within the European Funds for Regional Development (FEDER). Funding for the DES Projects has been provided by the US Department of Energy, the US '0:funding-source 3:href="http://dx.doi.org/10.13039/100000001"' National Science Foundation'/0:funding-source', the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Cientifico e Tecnologico, and the Ministerio da Ciencia, Tecnologia e Inovacao, the Deutsche Forschungsgemeinschaft, and the Collaborating Institutions in the Dark Energy Survey. The Collaborating Institutions are Argonne National Laboratory, the University of California at Santa Cruz, the University of Cambridge, Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas-Madrid, the University of Chicago, University College London, the DES-Brazil Consortium, the University of Edinburgh, the Eidgenossische Technische Hochschule (ETH) Zurich, Fermi National Accelerator Laboratory, the University of Illinois at Urbana-Champaign, the Institut de Ciencies de l'Espai (IEEC/CSIC), the Institut de Fisica d'Altes Energies, Lawrence Berkeley National Laboratory, the Ludwig-Maximilians Universitat Munchen and the associated Excellence Cluster Universe, the University of Michigan, the National Optical Astronomy Observatory, the University of Nottingham, The Ohio State University, the University of Pennsylvania, the University of Portsmouth, SLAC National Accelerator Laboratory, Stanford University, the University of Sussex, Texas A&M University, and the OzDES Membership Consortium. This paper is based in part on observations at Cerro Tololo Inter-American Observatory, National Optical Astronomy Observatory, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2015-71825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Brazilian Instituto Nacional de Ciencia e Tecnologia (INCT) e-Universe (CNPq grant 465376/2014-2). This paper has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the US Department of Energy, Office of Science, Office of High Energy Physics. This paper is based in part on data acquired at the Anglo-Australian Telescope, under program A/2013B/012. We acknowledge the traditional owners of the land on which the AAT stands, the Gamilaraay people, and pay our respects to elders past and present. This paper has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the US Department of Energy, Office of Science, Office of High Energy Physics. The United States Government retains and the publisher, by accepting this paper for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this paper, or allow others to do so, for United States Government purposes. This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.es_ES
dc.description.abstractWe present DES14X2fna, a high-luminosity, fast-declining Type IIb supernova (SN IIb) at redshift z = 0.0453, detected by the Dark Energy Survey (DES). DES14X2fna is an unusual member of its class, with a light curve showing a broad, luminous peak reaching Mr −19.3mag 20 d after explosion. This object does not show a linear decline tail in the light curve until 60 d after explosion, after which it declines very rapidly (4.30 ± 0.10 mag 100 d−1 in the r band). By fitting semi-analytic models to the photometry of DES14X2fna, we find that its light curve cannot be explained by a standard 56Ni decay model as this is unable to fit the peak and fast tail decline observed. Inclusion of either interaction with surrounding circumstellar material or a rapidly-rotating neutron star (magnetar) significantly increases the quality of the model fit. We also investigate the possibility for an object similar to DES14X2fna to act as a contaminant in photometric samples of SNe Ia for cosmology, finding that a similar simulated object is misclassified by a recurrent neural network (RNN)-based photometric classifier as an SN Ia in ∼1.1–2.4 per cent of cases in DES, depending on the probability threshold used for a positive classification.es_ES
dc.description.sponsorshipScience and Technology Facilities Council through the DISCnet Centre for Doctoral Traininges_ES
dc.description.sponsorshipEU/FP7-ERC grant 615929es_ES
dc.description.sponsorshipEuropean Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant 839090es_ES
dc.description.sponsorshipSpanish grant within the European Funds for Regional Development (FEDER) PGC2018-095317-B-C21es_ES
dc.description.sponsorshipUnited States Department of Energy (DOE)es_ES
dc.description.sponsorshipNational Science Foundation (NSF)es_ES
dc.description.sponsorshipSpanish Governmentes_ES
dc.description.sponsorshipUK Research & Innovation (UKRI)es_ES
dc.description.sponsorshipScience & Technology Facilities Council (STFC)es_ES
dc.description.sponsorshipUK Research & Innovation (UKRI)es_ES
dc.description.sponsorshipHigher Education Funding Council for Englandes_ES
dc.description.sponsorshipNational Center for Supercomputing Applications at the University of Illinois at Urbana-Champaignes_ES
dc.description.sponsorshipKavli Institute of Cosmological Physics at the University of Chicagoes_ES
dc.description.sponsorshipMitchell Institute for Fundamental Physics and Astronomy at Texas AM Universityes_ES
dc.description.sponsorshipFinanciadora de Inovacao e Pesquisa (Finep)es_ES
dc.description.sponsorshipFundacao Carlos Chagas Filho de Amparo a Pesquisa do Estado do Rio De Janeiro (FAPERJ)es_ES
dc.description.sponsorshipConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ)es_ES
dc.description.sponsorshipMinisterio da Ciencia, Tecnologia e Inovacaoes_ES
dc.description.sponsorshipGerman Research Foundation (DFG)es_ES
dc.description.sponsorshipCollaborating Institutions in the Dark Energy Surveyes_ES
dc.description.sponsorshipNational Science Foundation (NSF) AST-1138766 AST-1536171es_ES
dc.description.sponsorshipMINECO AYA2015-71825 ESP2015-66861 FPA2015-68048 SEV-2016-0588 SEV-2016-0597 MDM-2015-0509es_ES
dc.description.sponsorshipEuropean Commissiones_ES
dc.description.sponsorshipCERCA program of the Generalitat de Catalunyaes_ES
dc.description.sponsorshipEuropean Research Council (ERC) FP7/2007-2013es_ES
dc.description.sponsorshipEuropean Research Council (ERC) European Commission 240672 291329 306478es_ES
dc.description.sponsorshipBrazilian Instituto Nacional de Ciencia e Tecnologia (INCT) e-Universe (CNPq grant) 465376/2014-2es_ES
dc.description.sponsorshipFermi Research Alliance, LLC DE-AC02-07CH11359es_ES
dc.description.sponsorshipAnglo-Australian Telescope A/2013B/012es_ES
dc.description.sponsorshipNational Aeronautics & Space Administration (NASA)es_ES
dc.language.isoenges_ES
dc.publisherOxford University Presses_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.subjectSupernovae: generales_ES
dc.subjectSupernovae: individual: DES14X2fnaes_ES
dc.titleUnderstanding the extreme luminosity of DES14X2fnaes_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/615929es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/H2020/839090es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/240672es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/291329es_ES
dc.relation.projectIDinfo:eu-repo/grantAgreement/EC/FP7/306478es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
dc.identifier.doi10.1093/mnras/stab1478
dc.type.hasVersioninfo:eu-repo/semantics/publishedVersiones_ES


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