Optical photometry and spectroscopy of the 1987A-like supernova 2009mw
Author
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Takats, K.
Author
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Pignata Libralato, Giuliano
Author
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Bersten, M.
Author
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Rojas Kaufmann, M. L.
Author
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Anderson, J. P.
Author
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Folatelli, Gastón
Author
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Hamuy Wackenhut, Mario
Author
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Stritzinger, M.
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Haislip, Joshua B.
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LaCluyze, A. P.
Author
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Moore, J. P.
Author
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Reichart, D.
Admission date
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2017-01-09T14:08:25Z
Available date
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2017-01-09T14:08:25Z
Publication date
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2016
Cita de ítem
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Monthly Notices of The Royal Astronomical Society. Volumen: 460 Número: 4 Páginas: 3447-3457
es_ES
Identifier
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10.1093/mnras/stw1122
Identifier
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https://repositorio.uchile.cl/handle/2250/142334
Abstract
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We present optical photometric and spectroscopic observations of the 1987A-like supernova (SN) 2009mw. Our BVRI and g ' r ' i ' z ' photometry covers 167 d 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 through hydrodynamical modelling, and yield an explosion energy of 1 foe, a pre-SN mass of 19 M-aS (TM), a progenitor radius of 30 R-aS (TM) and a Ni-56 mass of 0.062 M-aS (TM). 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 a slightly subsolar metallicty.
es_ES
Patrocinador
dc.description.sponsorship
CONICYT through the FONDECYT grant; Ministry of Economy, Development, and Tourism's Millennium Science Initiative,; Danish Agency for Science and Technology and Innovation realized through a Sapere Aude Level 2 grant; Gemini Observatory