Hydrodynamical models of type II plateau supernovae

We present bolometric light curves of Type II plateau supernovae obtained using a newly developed, one-dimensional Lagrangian hydrodynamic code with flux-limited radiation diffusion. Using our code we calculate the bolometric light curve and photospheric velocities of SN 1999em, obtaining a remarkab...

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Autores principales: Bersten, Melina Cecilia, Benvenuto, Omar Gustavo, Hamuy, Mario
Formato: Articulo
Lenguaje:Inglés
Publicado: 2011
Materias:
Ciencias Astronómicas
general supernovae
hydrodynamics supernovae
individual (SN 1999em)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83956
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83956
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
general supernovae
hydrodynamics supernovae
individual (SN 1999em)
spellingShingle Ciencias Astronómicas
general supernovae
hydrodynamics supernovae
individual (SN 1999em)
Bersten, Melina Cecilia
Benvenuto, Omar Gustavo
Hamuy, Mario
Hydrodynamical models of type II plateau supernovae
topic_facet Ciencias Astronómicas
general supernovae
hydrodynamics supernovae
individual (SN 1999em)
description We present bolometric light curves of Type II plateau supernovae obtained using a newly developed, one-dimensional Lagrangian hydrodynamic code with flux-limited radiation diffusion. Using our code we calculate the bolometric light curve and photospheric velocities of SN 1999em, obtaining a remarkably good agreement with observations despite the simplifications used in our calculation. The physical parameters used in our calculation are E = 1.25foe, M = 19 M ⊙, R = 800 R ⊙, and M Ni = 0.056 M ⊙. We find that an extensive mixing of 56Ni is needed in order to reproduce a plateau as flat as that shown by the observations. We also study the possibility to fit the observations with lower values of the initial mass consistently with upper limits that have been inferred from pre-supernova imaging of SN 1999em in connection with stellar evolution models. We cannot find a set of physical parameters that reproduce well the observations for models with pre-supernova mass of ≤12 M ⊙, although models with 14 M ⊙ cannot be fully discarded.
format Articulo
Articulo
author Bersten, Melina Cecilia
Benvenuto, Omar Gustavo
Hamuy, Mario
author_facet Bersten, Melina Cecilia
Benvenuto, Omar Gustavo
Hamuy, Mario
author_sort Bersten, Melina Cecilia
title Hydrodynamical models of type II plateau supernovae
title_short Hydrodynamical models of type II plateau supernovae
title_full Hydrodynamical models of type II plateau supernovae
title_fullStr Hydrodynamical models of type II plateau supernovae
title_full_unstemmed Hydrodynamical models of type II plateau supernovae
title_sort hydrodynamical models of type ii plateau supernovae
publishDate 2011
url http://sedici.unlp.edu.ar/handle/10915/83956
work_keys_str_mv AT berstenmelinacecilia hydrodynamicalmodelsoftypeiiplateausupernovae
AT benvenutoomargustavo hydrodynamicalmodelsoftypeiiplateausupernovae
AT hamuymario hydrodynamicalmodelsoftypeiiplateausupernovae
bdutipo_str Repositorios
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