The type IIP supernova 2012aw in m95: Hydrodynamical modeling of the photospheric phase from accurate spectrophotometric monitoring
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Archivos
Fecha
2014-06
Profesor/a Guía
Facultad/escuela
Idioma
en
Título de la revista
ISSN de la revista
Título del volumen
Editor
Institute of Physics Publishing
Nombre de Curso
Licencia CC
Atribution 4.0 International (CC BY 4.0)
Licencia CC
https://creativecommons.org/licenses/by/4.0/deed.es
Resumen
We present an extensive optical and near-infrared photometric and spectroscopic campaign of the Type IIP supernova
SN 2012aw. The data set densely covers the evolution of SN 2012aw shortly after the explosion through the end
of the photospheric phase, with two additional photometric observations collected during the nebular phase, to fit
the radioactive tail and estimate the 56Ni mass. Also included in our analysis is the previously published Swift
UV data, therefore providing a complete view of the ultraviolet-optical-infrared evolution of the photospheric
phase. On the basis of our data set, we estimate all the relevant physical parameters of SN 2012aw with our
radiation-hydrodynamics code: envelope mass Menv ∼ 20 M , progenitor radius R ∼ 3 × 1013 cm (∼430 R ),
explosion energy E ∼ 1.5 foe, and initial 56Ni mass ∼0.06 M . These mass and radius values are reasonably well
supported by independent evolutionary models of the progenitor, and may suggest a progenitor mass higher than
the observational limit of 16.5 ± 1.5 M of the Type IIP events.
Notas
Indexación: Scopus.
Palabras clave
Galaxies: Individual (M95), Supernovae: General, Supernovae: Individual (2012aw), Online-only material: color figures
Citación
Astrophysical Journal. Volume 787, Issue 2. 1 June 2014. Article number 139
DOI
DOI: 10.1088/0004-637X/787/2/139