Exploring Super-Chandrasekhar Supernova SN2007if with radiative transfer code TARDIS

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dc.catalogadorpva
dc.contributor.advisorClocchiatti, Alejandro
dc.contributor.authorSilva Beyer, Joaquín
dc.contributor.otherPontificia Universidad Católica de Chile. Instituto de Astrofísica
dc.date.accessioned2024-08-23T19:45:10Z
dc.date.available2024-08-23T19:45:10Z
dc.date.issued2024
dc.date.updated2024-08-15T19:37:05Z
dc.descriptionTesis (Master in Astrophysics)--Pontificia Universidad Católica de Chile, 2024
dc.description.abstractSuper-Chandrasekhar Supernovae (SNe) are a peculiar case of Type Ia SNthat show very high luminosities, slow light-curve evolution, and low expan-sion velocities, consistent with progenitor masses over the Chandrasekharlimit (≳ 1.4M⊙). SN 2007if is one of those events, with a still unknownexplosion scenario. Its early spectra are smooth and near featureless, butat later epochs, they seem to morph into a normal Type Ia. I exploredits spectra with radiative transfer code TARDIS, using three models, con-sidering the envelope interaction and the violent merger hypotheses. Thebest model, based on the envelope interaction scenario, resulted in a verygood match for early epochs, and a better match in the later epochs than theother models. I performed abundance tomography and adapted its chemicalstructure, resulting in my model 07if-tail. While it had a good agree-ment with the observed low velocities and some lines, many still featuredtoo deep absorption profiles, and the lines suggested a lower temperaturethan the overall continuum. I found that SN2007if probably lacks S and hasno Fe on its outer regions. In order to explain SN2007if’s light curve andspectra, a secondary source of continuum brightness is needed. My findingssupport the scenario of a WD-WD slow merger, forming a CO envelope thatinteracts with the explosion’s ejecta.
dc.fechaingreso.objetodigital2024-08-15
dc.format.extentvii, 80 páginas
dc.fuente.origenAutoarchivo
dc.identifier.doi10.7764/tesisUC/AST/87653
dc.identifier.urihttps://doi.org/10.7764/tesisUC/AST/87653
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/87653
dc.information.autorucInstituto de Astrofísica; Clocchiatti, Alejandro; 0000-0003-3068-4258; 100500
dc.information.autorucInstituto de Astrofísica; Silva Beyer, Joaquin; S/I; 1044947
dc.language.isoen
dc.nota.accesocontenido completo
dc.rightsacceso abierto
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subject.ddc520
dc.subject.deweyAstronomíaes_ES
dc.titleExploring Super-Chandrasekhar Supernova SN2007if with radiative transfer code TARDIS
dc.typetesis de maestría
sipa.codpersvinculados100500
sipa.codpersvinculados1044947
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