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Authordc.contributor.authorCartier Ugarte, Regis 
Authordc.contributor.authorFörster, F. es_CL
Authordc.contributor.authorCoppi, C. es_CL
Authordc.contributor.authorHamuy Wackenhut, Mario es_CL
Authordc.contributor.authorMaeda, K. es_CL
Authordc.contributor.authorPignata Libralato, Giuliano es_CL
Authordc.contributor.authorFolatelli, Gastón es_CL
Admission datedc.date.accessioned2013-12-26T19:24:21Z
Available datedc.date.available2013-12-26T19:24:21Z
Publication datedc.date.issued2011
Cita de ítemdc.identifier.citationA&A 534, L15 (2011)en_US
Identifierdc.identifier.otherDOI: 10.1051/0004-6361/201117778
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/125861
General notedc.descriptionArtículo de publicación ISI
Abstractdc.description.abstractFrom a sample of 12 well-observed Type Ia supernovae, we find clear evidence of correlations between early phase (U − B), (V − R), and (V − I) colors and the velocity shifts of the [Fe II] λ7155 and [Ni II] λ7378 nebular lines measured from late-phase spectra. As these lines are thought to trace the ashes of the initial deflagration process, our findings provide additional support to the new paradigm of off-center explosions in Type Ia supernovae, and we interpret these correlations as viewing angle effects in the observed colors. We also show that the nebular velocity shifts are related to the strength and width of the Ca II H&K and IR-triplet lines near-maximum light. The evidence presented here implies that the viewing angle must be taken into account when deriving extinction values and distances in future cosmological studies based on Type Ia supernovae.en_US
Lenguagedc.language.isoen_USen_US
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Keywordsdc.subjectdistance scaleen_US
Títulodc.titleA study of the color diversity around maximum light in Type Ia supernovaeen_US
Document typedc.typeArtículo de revista


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Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile