Revealing the True Nature of Hen 2-428

The nucleus of Hen 2-428 is a short orbital period (4.2 h) spectroscopic binary, whose status as potential supernovae type Ia progenitor has raised some controversy in the literature. We present preliminary results of a thorough analysis of this interesting system, which combines quantitative non-lo...

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Detalles Bibliográficos
Autores principales: Reindl, Nicole, Finch, Nicolle, Schaffenroth, Veronika, Barstow, Martin, Casewell, Sarah, Geier, Stephan, Miller Bertolami, Marcelo Miguel, Taubenberger, Stefan
Formato: Articulo
Lenguaje:Inglés
Publicado: 2018
Materias:
Ciencias Astronómicas
Binaries: spectroscopic
Stars: atmospheres
Stars: abundances
Supernovae
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/125381
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-125381
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
Binaries: spectroscopic
Stars: atmospheres
Stars: abundances
Supernovae
spellingShingle Ciencias Astronómicas
Binaries: spectroscopic
Stars: atmospheres
Stars: abundances
Supernovae
Reindl, Nicole
Finch, Nicolle
Schaffenroth, Veronika
Barstow, Martin
Casewell, Sarah
Geier, Stephan
Miller Bertolami, Marcelo Miguel
Taubenberger, Stefan
Revealing the True Nature of Hen 2-428
topic_facet Ciencias Astronómicas
Binaries: spectroscopic
Stars: atmospheres
Stars: abundances
Supernovae
description The nucleus of Hen 2-428 is a short orbital period (4.2 h) spectroscopic binary, whose status as potential supernovae type Ia progenitor has raised some controversy in the literature. We present preliminary results of a thorough analysis of this interesting system, which combines quantitative non-local thermodynamic (non-LTE) equilibrium spectral modelling, radial velocity analysis, multi-band light curve fitting, and state-of-the art stellar evolutionary calculations. Importantly, we find that the dynamical system mass that is derived by using all available He II lines does not exceed the Chandrasekhar mass limit. Furthermore, the individual masses of the two central stars are too small to lead to an SN Ia in case of a dynamical explosion during the merger process.
format Articulo
Articulo
author Reindl, Nicole
Finch, Nicolle
Schaffenroth, Veronika
Barstow, Martin
Casewell, Sarah
Geier, Stephan
Miller Bertolami, Marcelo Miguel
Taubenberger, Stefan
author_facet Reindl, Nicole
Finch, Nicolle
Schaffenroth, Veronika
Barstow, Martin
Casewell, Sarah
Geier, Stephan
Miller Bertolami, Marcelo Miguel
Taubenberger, Stefan
author_sort Reindl, Nicole
title Revealing the True Nature of Hen 2-428
title_short Revealing the True Nature of Hen 2-428
title_full Revealing the True Nature of Hen 2-428
title_fullStr Revealing the True Nature of Hen 2-428
title_full_unstemmed Revealing the True Nature of Hen 2-428
title_sort revealing the true nature of hen 2-428
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/125381
work_keys_str_mv AT reindlnicole revealingthetruenatureofhen2428
AT finchnicolle revealingthetruenatureofhen2428
AT schaffenrothveronika revealingthetruenatureofhen2428
AT barstowmartin revealingthetruenatureofhen2428
AT casewellsarah revealingthetruenatureofhen2428
AT geierstephan revealingthetruenatureofhen2428
AT millerbertolamimarcelomiguel revealingthetruenatureofhen2428
AT taubenbergerstefan revealingthetruenatureofhen2428
bdutipo_str Repositorios
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