Artículo
Optical photometry and spectroscopy of the 1987A-like supernova 2009mw
Takáts, K.; Pignata, G.; Bersten, Melina Cecilia
; Rojas Kaufmann, María Luján
; Anderson, J. P.; Folatelli, Gaston
; Hamuy, M.; Stritzinger, M.; Haislip, J. B.; LaCluyze, A. P.; Moore, J. P.; Reichart, D.
Fecha de publicación:
06/2016
Editorial:
Wiley Blackwell Publishing, Inc
Revista:
Monthly Notices of the Royal Astronomical Society
ISSN:
0035-8711
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We present optical photometric and spectroscopic observations of the 1987A-like supernova (SN) 2009mw. Our BV RI and g ′ r ′ i ′ z ′ photometry covers 167 days of evolution, including the rise to the light curve maximum, and ends just after the beginning of the linear tail phase. We compare the observational properties of SN 2009mw with those of other SNe belonging to the same subgroup, and find that it shows similarities to several objects. The physical parameters of the progenitor and the SN are estimated via hydrodynamical modelling, yielding an explosion energy of 1 foe, a pre-SN mass of 19 M⊙, a progenitor radius as 30 R⊙ and a 56Ni mass as 0.062 M⊙. These values indicate that the progenitor of SN 2009mw was a blue supergiant star, similar to the progenitor of SN 1987A. We examine the host environment of SN 2009mw and find that it emerged from a population with slightly sub-solar metallicty.
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Articulos(IALP)
Articulos de INST.DE ASTROFISICA LA PLATA
Articulos de INST.DE ASTROFISICA LA PLATA
Citación
Takáts, K.; Pignata, G.; Bersten, Melina Cecilia; Rojas Kaufmann, María Luján; Anderson, J. P.; et al.; Optical photometry and spectroscopy of the 1987A-like supernova 2009mw; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 6-2016
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