A New Outburst in the Extraordinary Central Star of LMC-N661

This is the first report on the new outburst presented by the central star of the LMC-N66 nebula. This object was classified as a planetary nebula; however, its true nature is under debate. In the period 1955–1990 the central star was almost undetectable and only nebular emission lines were observed...

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Detalles Bibliográficos
Autores: Pena, M., Ruiz, M.T., Rojo, P.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:Chile
Idioma:inglés
OAI Identifier:oai:repositorio.anid.cl:10533/236905
Acceso en línea:https://hdl.handle.net/10533/236905
Access Level:acceso abierto
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spelling Rojo, P.Ruiz, M.T.Pena, M.200810.1086/589999https://hdl.handle.net/10533/236905http://purl.org/coar/access_right/c_abf2A New Outburst in the Extraordinary Central Star of LMC-N661Pena, M.Ruiz, M.T.Rojo, P.2019-12-18T18:14:17Z2022-07-07T21:57:42Z2019-12-18T18:14:17Z2022-07-07T21:57:42Z2008This is the first report on the new outburst presented by the central star of the LMC-N66 nebula. This object was classified as a planetary nebula; however, its true nature is under debate. In the period 1955–1990 the central star was almost undetectable and only nebular emission lines were observed. In 1990, the beginning of an outburst was detected and in few months it became much brighter and developed wide He and N lines, typical of a WolfRayet star of the N-sequence. The maximum occurred in 1994 and afterward the star slowly faded. Analysis of its evolution showed that it has a variable mass-loss rate which occasionally increases enormously, creating a false photosphere at a much larger radius, making it appear a few magnitudes brighter. The present outburst has occurred 13 years after the episode from 1994 to 2000. So far this new event has similar characteristics although there are some significant differences in the spectral features. We present optical and FUSE spectra showing the main properties of this latter event.FONDAPFONDAP1501000315010003virtual::25186-1WOS:000256722600004https://hdl.handle.net/10533/236905enginstname: Conicytreponame: Repositorio Digital RI2.010.1086/589999info:eu-repo/grantAgreement/Fondap/15010003http://repositorio.uchile.cl/bitstream/handle/2250/125088/Pe%C3%B1a_Miriam.pdf?sequence=1Atribución-NoComercial-SinDerivadas 3.0 Chilehttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/info:eu-repo/semantics/openAccessA New Outburst in the Extraordinary Central Star of LMC-N661Astrophysical JournalArticuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttps://hdl.handle.net/10533/236905http://purl.org/coar/resource_type/c_2df8fbb1045fc0e1-ef55-4532-8afe-69fe789d964dvirtual::25186-1045fc0e1-ef55-4532-8afe-69fe789d964dvirtual::25186-110533/236905oai:repositorio.anid.cl:10533/2369052023-07-24 20:08:12.832https://repositorio.anid.clRepositorio ANIDaletelier@anid.cl
dc.title.none.fl_str_mv A New Outburst in the Extraordinary Central Star of LMC-N661
dc.title.journal.none.fl_str_mv Astrophysical Journal
title A New Outburst in the Extraordinary Central Star of LMC-N661
spellingShingle A New Outburst in the Extraordinary Central Star of LMC-N661
Pena, M.
title_short A New Outburst in the Extraordinary Central Star of LMC-N661
title_full A New Outburst in the Extraordinary Central Star of LMC-N661
title_fullStr A New Outburst in the Extraordinary Central Star of LMC-N661
title_full_unstemmed A New Outburst in the Extraordinary Central Star of LMC-N661
title_sort A New Outburst in the Extraordinary Central Star of LMC-N661
dc.creator.none.fl_str_mv Pena, M.
Ruiz, M.T.
Rojo, P.
author Pena, M.
author_facet Pena, M.
Ruiz, M.T.
Rojo, P.
author_role author
author2 Ruiz, M.T.
Rojo, P.
author2_role author
author
description This is the first report on the new outburst presented by the central star of the LMC-N66 nebula. This object was classified as a planetary nebula; however, its true nature is under debate. In the period 1955–1990 the central star was almost undetectable and only nebular emission lines were observed. In 1990, the beginning of an outburst was detected and in few months it became much brighter and developed wide He and N lines, typical of a WolfRayet star of the N-sequence. The maximum occurred in 1994 and afterward the star slowly faded. Analysis of its evolution showed that it has a variable mass-loss rate which occasionally increases enormously, creating a false photosphere at a much larger radius, making it appear a few magnitudes brighter. The present outburst has occurred 13 years after the episode from 1994 to 2000. So far this new event has similar characteristics although there are some significant differences in the spectral features. We present optical and FUSE spectra showing the main properties of this latter event.
publishDate 2008
dc.date.issued.none.fl_str_mv 2008
dc.date.accessioned.none.fl_str_mv 2019-12-18T18:14:17Z
2022-07-07T21:57:42Z
dc.date.available.none.fl_str_mv 2019-12-18T18:14:17Z
2022-07-07T21:57:42Z
dc.type.none.fl_str_mv Articulo
dc.type.driver.none.fl_str_mv info:eu-repo/semantics/article
dc.type.openaire.none.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
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15010003
dc.identifier.idwos.none.fl_str_mv WOS:000256722600004
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10533/236905
identifier_str_mv 15010003
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url https://hdl.handle.net/10533/236905
dc.language.iso.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv instname: Conicyt
reponame: Repositorio Digital RI2.0
dc.relation.doi.none.fl_str_mv 10.1086/589999
dc.relation.projectid.none.fl_str_mv info:eu-repo/grantAgreement/Fondap/15010003
dc.relation.uri.none.fl_str_mv http://repositorio.uchile.cl/bitstream/handle/2250/125088/Pe%C3%B1a_Miriam.pdf?sequence=1
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 Chile
http://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rights.driver.none.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 Chile
http://creativecommons.org/licenses/by-nc-nd/3.0/cl/
eu_rights_str_mv openAccess
repository.name.fl_str_mv Repositorio ANID
repository.mail.fl_str_mv aletelier@anid.cl
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