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dc.contributor.author
Anderson, J. P.
dc.contributor.author
Gutiérrez, Claudia P.
dc.contributor.author
Dessart, L.
dc.contributor.author
Hamuy, Mario
dc.contributor.author
Galbany, L.
dc.contributor.author
Morrell, Nidia Irene
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dc.contributor.author
Stritzinger, Maximilian D.
dc.contributor.author
Phillips, M. M.
dc.contributor.author
Folatelli, Gaston
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Boffin, H. M. J.
dc.contributor.author
de Jaeger, T.
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Kuncarayakti, H.
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Prieto, J. L.
dc.date.available
2018-02-06T14:40:55Z
dc.date.issued
2016-04
dc.identifier.citation
Anderson, J. P.; Gutiérrez, Claudia P.; Dessart, L.; Hamuy, Mario; Galbany, L.; et al.; Type II supernovae as probes of environment metallicity: observations of host HII regions; EDP Sciences; Astronomy and Astrophysics; 589; 4-2016; 110-129
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/35752
dc.description.abstract
Context. Spectral modelling of type II supernova atmospheres indicates a clear dependence of metal line strengths on progenitor metallicity. This dependence motivates further work to evaluate the accuracy with which these supernovae can be used as environment metallicity indicators. Aims. To assess this accuracy we present a sample of type II supernova host H ii-region spectroscopy, from which environment oxygen abundances have been derived. These environment abundances are compared to the observed strength of metal lines in supernova spectra. Methods. Combining our sample with measurements from the literature, we present oxygen abundances of 119 host H ii regions by extracting emission line fluxes and using abundance diagnostics. These abundances are then compared to equivalent widths of Fe ii 5018 Å at various time and colour epochs. Results. Our distribution of inferred type II supernova host H ii-region abundances has a range of ∼0.6 dex. We confirm the dearth of type II supernovae exploding at metallicities lower than those found (on average) in the Large Magellanic Cloud. The equivalent width of Fe ii 5018 Å at 50 days post-explosion shows a statistically significant correlation with host H ii-region oxygen abundance. The strength of this correlation increases if one excludes abundance measurements derived far from supernova explosion sites. The correlation significance also increases if we only analyse a ‘gold’ IIP sample, and if a colour epoch is used in place of time. In addition, no evidence is found of a correlation between progenitor metallicity and supernova light-curve or spectral properties – except for that stated above with respect to Fe ii 5018 Å equivalent widths – suggesting progenitor metallicity is not a driving factor in producing the diversity that is observed in our sample. Conclusions. This study provides observational evidence of the usefulness of type II supernovae as metallicity indicators. We finish with a discussion of the methodology needed to use supernova spectra as independent metallicity diagnostics throughout the Universe
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Supernovae
dc.subject
Hii Regiones
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Abundances
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Galaxies
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Type II supernovae as probes of environment metallicity: observations of host HII regions
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-01-12T19:24:32Z
dc.journal.volume
589
dc.journal.pagination
110-129
dc.journal.pais
Francia
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dc.journal.ciudad
Paris
dc.description.fil
Fil: Anderson, J. P.. European Southern Observatory; Chile
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Fil: Gutiérrez, Claudia P.. European Southern Observatory; Chile
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Fil: Dessart, L.. Université Côte d’Azur; Francia
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Fil: Hamuy, Mario. Universidad de Chile; Chile
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Fil: Galbany, L.. Universidad de Chile; Chile
dc.description.fil
Fil: Morrell, Nidia Irene. Las Campanas Observatory; Chile
dc.description.fil
Fil: Stritzinger, Maximilian D.. Aarhus University; Dinamarca
dc.description.fil
Fil: Phillips, M. M.. Las Campanas Observatory; Chile
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Fil: Folatelli, Gaston. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Universidad de Tokyo; Japón
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Fil: Boffin, H. M. J.. European Southern Observatory; Chile
dc.description.fil
Fil: de Jaeger, T.. Universidad de Chile; Chile
dc.description.fil
Fil: Kuncarayakti, H.. European Southern Observatory; Chile
dc.description.fil
Fil: Prieto, J. L.. Universidad de Tokyo; Japón
dc.journal.title
Astronomy and Astrophysics
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/201527691
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2016/05/aa27691-15/aa27691-15.html
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