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The type IIP supernova 2012aw in m95: Hydrodynamical modeling of the photospheric phase from accurate spectrophotometric monitoring

Dall'Ora, M; Botticella, MT; Della Valle, M; Pumo, ML; Zampieri, L; Tomasella, L; Cappellaro, E; ... Taddia, F; + view all (2014) The type IIP supernova 2012aw in m95: Hydrodynamical modeling of the photospheric phase from accurate spectrophotometric monitoring. Astrophysical Journal , 787 (2) , Article 139. 10.1088/0004-637X/787/2/139. Green open access

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Abstract

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 Ni 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 M ∼ 20 M , progenitor radius R ∼ 3 × 10 cm (∼430 R), explosion energy E ∼ 1.5 foe, and initial Ni 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. © 2014. The American Astronomical Society. All rights reserved..

Type: Article
Title: The type IIP supernova 2012aw in m95: Hydrodynamical modeling of the photospheric phase from accurate spectrophotometric monitoring
Open access status: An open access version is available from UCL Discovery
DOI: 10.1088/0004-637X/787/2/139
Publisher version: http://dx.doi.org/10.1088/0004-637X/787/2/139
Language: English
Additional information: Post your accepted manuscript into an institutional or subject. Repository after a 12-month embargo, regardless of which journal you publish in (with reuse restrictions) – also known as green open access or self-archiving. There is no charge for this. This is applicable for all articles published in IOP journals.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/1462517
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