SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption

Autores
de Jaeger, T.; Anderson, J. P.; Pignata, G.; Hamuy, M.; Kankare, E.; Stritzinger, M. D.; Benetti, S.; Bufano, F.; Elias Rosa, N.; Folatelli, Gaston; Förster, F.; González Gaitán, S.; Gutiérrez, C. P.; Inserra, C.; Kotak, R.; Lira, P.; Morrell, Nidia; Taddia, F.; Tomasella, L.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
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.
Fil: de Jaeger, T. . Universidad de Chile; Chile. Millennium Institute of Astrophysics; Chile
Fil: Anderson, J. P. . European Southern Observatory; Chile
Fil: Pignata, G.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; Chile
Fil: Hamuy, M.. Universidad de Chile; Chile
Fil: Kankare, E.. The Queens University Of Belfast; Irlanda
Fil: Stritzinger, M. D. . Aarhus University; Dinamarca
Fil: Benetti, S.. INAF–Osservatorio Astronomico di Padova; Italia
Fil: Bufano, F.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; Chile
Fil: Elias Rosa, N.. INAF–Osservatorio Astronomico di Padova; Italia
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
Fil: Förster, F.. Millennium Institute of Astrophysics; Chile
Fil: González Gaitán, S.. Millennium Institute of Astrophysics; Chile
Fil: Gutiérrez, C. P. . Millennium Institute of Astrophysics; Chile
Fil: Inserra, C.. The Queens University Of Belfast; Irlanda
Fil: Kotak, R.. The Queens University Of Belfast; Irlanda
Fil: Lira, P.. Universidad de Chile; Chile
Fil: Morrell, Nidia. Carnegie Observatories. Las Campanas Observatory; Chile
Fil: Taddia, F. . Stockholm University; Suecia
Fil: Tomasella, L.. INAF–Osservatorio Astronomico di Padova; Italia
Materia
Circumstellar Matter
Stars
Supernovae
2011a (Supernova)
Mass Loss
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/12968
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/12968
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorptionde Jaeger, T. Anderson, J. P. Pignata, G.Hamuy, M.Kankare, E.Stritzinger, M. D. Benetti, S.Bufano, F.Elias Rosa, N.Folatelli, GastonFörster, F.González Gaitán, S.Gutiérrez, C. P. Inserra, C.Kotak, R.Lira, P.Morrell, NidiaTaddia, F. Tomasella, L.Circumstellar MatterStarsSupernovae2011a (Supernova)Mass Losshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We 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.Fil: de Jaeger, T. . Universidad de Chile; Chile. Millennium Institute of Astrophysics; ChileFil: Anderson, J. P. . European Southern Observatory; ChileFil: Pignata, G.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; ChileFil: Hamuy, M.. Universidad de Chile; ChileFil: Kankare, E.. The Queens University Of Belfast; IrlandaFil: Stritzinger, M. D. . Aarhus University; DinamarcaFil: Benetti, S.. INAF–Osservatorio Astronomico di Padova; ItaliaFil: Bufano, F.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; ChileFil: Elias Rosa, N.. INAF–Osservatorio Astronomico di Padova; ItaliaFil: Folatelli, Gaston. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina. University of Tokyo; JapónFil: Förster, F.. Millennium Institute of Astrophysics; ChileFil: González Gaitán, S.. Millennium Institute of Astrophysics; ChileFil: Gutiérrez, C. P. . Millennium Institute of Astrophysics; ChileFil: Inserra, C.. The Queens University Of Belfast; IrlandaFil: Kotak, R.. The Queens University Of Belfast; IrlandaFil: Lira, P.. Universidad de Chile; ChileFil: Morrell, Nidia. Carnegie Observatories. Las Campanas Observatory; ChileFil: Taddia, F. . Stockholm University; SueciaFil: Tomasella, L.. INAF–Osservatorio Astronomico di Padova; ItaliaIop Publishing2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/12968de 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; 63-780004-637Xenginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/807/1/63info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/807/1/63/metainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-03-31T15:23:39Zoai:ri.conicet.gov.ar:11336/12968instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-03-31 15:23:39.897CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
title SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
spellingShingle SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
de Jaeger, T.
Circumstellar Matter
Stars
Supernovae
2011a (Supernova)
Mass Loss
title_short SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
title_full SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
title_fullStr SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
title_full_unstemmed SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
title_sort SN 2011A: a low-luminosity interacting transient with a double plateau and strong sodium absorption
dc.creator.none.fl_str_mv de Jaeger, T.
Anderson, J. P.
Pignata, G.
Hamuy, M.
Kankare, E.
Stritzinger, M. D.
Benetti, S.
Bufano, F.
Elias Rosa, N.
Folatelli, Gaston
Förster, F.
González Gaitán, S.
Gutiérrez, C. P.
Inserra, C.
Kotak, R.
Lira, P.
Morrell, Nidia
Taddia, F.
Tomasella, L.
author de Jaeger, T.
author_facet de Jaeger, T.
Anderson, J. P.
Pignata, G.
Hamuy, M.
Kankare, E.
Stritzinger, M. D.
Benetti, S.
Bufano, F.
Elias Rosa, N.
Folatelli, Gaston
Förster, F.
González Gaitán, S.
Gutiérrez, C. P.
Inserra, C.
Kotak, R.
Lira, P.
Morrell, Nidia
Taddia, F.
Tomasella, L.
author_role author
author2 Anderson, J. P.
Pignata, G.
Hamuy, M.
Kankare, E.
Stritzinger, M. D.
Benetti, S.
Bufano, F.
Elias Rosa, N.
Folatelli, Gaston
Förster, F.
González Gaitán, S.
Gutiérrez, C. P.
Inserra, C.
Kotak, R.
Lira, P.
Morrell, Nidia
Taddia, F.
Tomasella, L.
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Circumstellar Matter
Stars
Supernovae
2011a (Supernova)
Mass Loss
topic Circumstellar Matter
Stars
Supernovae
2011a (Supernova)
Mass Loss
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 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.
Fil: de Jaeger, T. . Universidad de Chile; Chile. Millennium Institute of Astrophysics; Chile
Fil: Anderson, J. P. . European Southern Observatory; Chile
Fil: Pignata, G.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; Chile
Fil: Hamuy, M.. Universidad de Chile; Chile
Fil: Kankare, E.. The Queens University Of Belfast; Irlanda
Fil: Stritzinger, M. D. . Aarhus University; Dinamarca
Fil: Benetti, S.. INAF–Osservatorio Astronomico di Padova; Italia
Fil: Bufano, F.. Universidad Andres Bello; Chile. Millennium Institute of Astrophysics; Chile
Fil: Elias Rosa, N.. INAF–Osservatorio Astronomico di Padova; Italia
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
Fil: Förster, F.. Millennium Institute of Astrophysics; Chile
Fil: González Gaitán, S.. Millennium Institute of Astrophysics; Chile
Fil: Gutiérrez, C. P. . Millennium Institute of Astrophysics; Chile
Fil: Inserra, C.. The Queens University Of Belfast; Irlanda
Fil: Kotak, R.. The Queens University Of Belfast; Irlanda
Fil: Lira, P.. Universidad de Chile; Chile
Fil: Morrell, Nidia. Carnegie Observatories. Las Campanas Observatory; Chile
Fil: Taddia, F. . Stockholm University; Suecia
Fil: Tomasella, L.. INAF–Osservatorio Astronomico di Padova; Italia
description 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.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/12968
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
0004-637X
url http://hdl.handle.net/11336/12968
identifier_str_mv 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
0004-637X
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-637X/807/1/63
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-637X/807/1/63/meta
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Iop Publishing
publisher.none.fl_str_mv Iop Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.720982

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