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dc.contributor.author
de Jaeger, T.
dc.contributor.author
Anderson, J. P.
dc.contributor.author
Pignata, G.
dc.contributor.author
Hamuy, M.
dc.contributor.author
Kankare, E.
dc.contributor.author
Stritzinger, M. D.
dc.contributor.author
Benetti, S.
dc.contributor.author
Bufano, F.
dc.contributor.author
Elias Rosa, N.
dc.contributor.author
Folatelli, Gaston
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dc.contributor.author
Förster, F.
dc.contributor.author
González Gaitán, S.
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Gutiérrez, C. P.
dc.contributor.author
Inserra, C.
dc.contributor.author
Kotak, R.
dc.contributor.author
Lira, P.
dc.contributor.author
Morrell, Nidia
dc.contributor.author
Taddia, F.
dc.contributor.author
Tomasella, L.
dc.date.available
2017-02-13T22:09:08Z
dc.date.issued
2015-07
dc.identifier.citation
de Jaeger, T. ; Anderson, J. P. ; Pignata, G.; Hamuy, M.; Kankare, E.; et al.; SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption; Iop Publishing; Astrophysical Journal; 807; 7-2015; 63-78
dc.identifier.issn
0004-637X
dc.identifier.uri
http://hdl.handle.net/11336/12968
dc.description.abstract
We present optical photometry and spectroscopy of the optical transient SN 2011A. Our data span 140 days after discovery including {BVRI} u\prime g\prime r\prime i\prime z\prime photometry and 11 epochs of optical spectroscopy. Originally classified as a type IIn supernova (SN IIn) due to the presence of narrow Hα emission, this object shows exceptional characteristics. First, the light curve shows a double plateau, a property only observed before in the impostor SN 1997bs. Second, SN 2011A has a very low luminosity ({M}V=-15.72), placing it between normal luminous SNe IIn and SN impostors. Third, SN 2011A shows low velocity and high equivalent width absorption close to the sodium doublet, which increases with time and is most likely of circumstellar origin. This evolution is also accompanied by a change in line profile; when the absorption becomes stronger, a P Cygni profile appears. We discuss SN 2011A in the context of interacting SNe IIn and SN impostors, which appears to confirm the uniqueness of this transient. While we favor an impostor origin for SN 2011A, we highlight the difficulty in differentiating between terminal and non-terminal interacting transients.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Iop Publishing
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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
Circumstellar Matter
dc.subject
Stars
dc.subject
Supernovae
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2011a (Supernova)
dc.subject
Mass Loss
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
SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-01-11T13:26:10Z
dc.journal.volume
807
dc.journal.pagination
63-78
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Londres
dc.description.fil
Fil: de Jaeger, T. . Universidad de Chile; Chile. Millennium Institute of Astrophysics; Chile
dc.description.fil
Fil: Anderson, J. P. . European Southern Observatory; Chile
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Fil: Pignata, G.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; Chile
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Fil: Hamuy, M.. Universidad de Chile; Chile
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Fil: Kankare, E.. The Queens University Of Belfast; Irlanda
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Fil: Stritzinger, M. D. . Aarhus University; Dinamarca
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Fil: Benetti, S.. INAF–Osservatorio Astronomico di Padova; Italia
dc.description.fil
Fil: Bufano, F.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; Chile
dc.description.fil
Fil: Elias Rosa, N.. INAF–Osservatorio Astronomico di Padova; Italia
dc.description.fil
Fil: Folatelli, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. University of Tokyo; Japón
dc.description.fil
Fil: Förster, F.. Millennium Institute of Astrophysics; Chile
dc.description.fil
Fil: González Gaitán, S.. Millennium Institute of Astrophysics; Chile
dc.description.fil
Fil: Gutiérrez, C. P. . Millennium Institute of Astrophysics; Chile
dc.description.fil
Fil: Inserra, C.. The Queens University Of Belfast; Irlanda
dc.description.fil
Fil: Kotak, R.. The Queens University Of Belfast; Irlanda
dc.description.fil
Fil: Lira, P.. Universidad de Chile; Chile
dc.description.fil
Fil: Morrell, Nidia. Carnegie Observatories. Las Campanas Observatory; Chile
dc.description.fil
Fil: Taddia, F. . Stockholm University; Suecia
dc.description.fil
Fil: Tomasella, L.. INAF–Osservatorio Astronomico di Padova; Italia
dc.journal.title
Astrophysical Journal
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/0004-637X/807/1/63
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/807/1/63/meta
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