The HD 5980 multiple system: masses and evolutionary status

Autores
Koenigsberger, Gloria; Morrell, Nidia Irene; Hillier, D. John; Gamen, Roberto Claudio; Schneider, Fabian; González Jiménez, Nicolás; Langer, Norbert; Barba, Rodolfo Hector
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
New spectroscopic observations of the LBV/WR multiple system HD 5980 in the Small Magellanic Cloud are used to address the question of the masses and evolutionary status of the two very luminous stars in the 19.3 day eclipsing binary system. Two distinct components of the N V 4944 Å line are detected in emission and their radial velocity variations are used to derive masses of 61 and 66 M ☉, under the assumption that binary interaction effects on this atomic transition are negligible. We propose that this binary system is the product of quasi-chemically homogeneous evolution with little or no mass transfer. Thus, both of these binary stars may be candidates for gamma-ray burst progenitors or even pair instability supernovae. Analysis of the photospheric absorption lines belonging to the third-light object in the system confirm that it consists of an O-type star in a 96.56 day eccentric orbit (e = 0.82) around an unseen companion. The 5:1 period ratio and high eccentricities of the two binaries suggest that they may constitute a hierarchical quadruple system.
Fil: Koenigsberger, Gloria. Universidad Nacional Autónoma de México; México
Fil: Morrell, Nidia Irene. The Carnegie Observatories. Las Campanas Observatory; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Hillier, D. John. University Of Pittsburgh; Estados Unidos
Fil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Schneider, Fabian. Argelander-Institut fur Astronomie; Alemania
Fil: González Jiménez, Nicolás. Argelander-Institut für Astronomie; Alemania
Fil: Langer, Norbert. Argelander-Institut für Astronomie; Alemania
Fil: Barba, Rodolfo Hector. Universidad de la Serena; Chile
Materia
Eclipsing Binaries
Evolution of Stars
Hd 5980 (Estrella)
Massive Stars
Wolf Rayet Stars
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:11336/10919
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The HD 5980 multiple system: masses and evolutionary statusKoenigsberger, GloriaMorrell, Nidia IreneHillier, D. JohnGamen, Roberto ClaudioSchneider, FabianGonzález Jiménez, NicolásLanger, NorbertBarba, Rodolfo HectorEclipsing BinariesEvolution of StarsHd 5980 (Estrella)Massive StarsWolf Rayet Starshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1New spectroscopic observations of the LBV/WR multiple system HD 5980 in the Small Magellanic Cloud are used to address the question of the masses and evolutionary status of the two very luminous stars in the 19.3 day eclipsing binary system. Two distinct components of the N V 4944 Å line are detected in emission and their radial velocity variations are used to derive masses of 61 and 66 M ☉, under the assumption that binary interaction effects on this atomic transition are negligible. We propose that this binary system is the product of quasi-chemically homogeneous evolution with little or no mass transfer. Thus, both of these binary stars may be candidates for gamma-ray burst progenitors or even pair instability supernovae. Analysis of the photospheric absorption lines belonging to the third-light object in the system confirm that it consists of an O-type star in a 96.56 day eccentric orbit (e = 0.82) around an unseen companion. The 5:1 period ratio and high eccentricities of the two binaries suggest that they may constitute a hierarchical quadruple system.Fil: Koenigsberger, Gloria. Universidad Nacional Autónoma de México; MéxicoFil: Morrell, Nidia Irene. The Carnegie Observatories. Las Campanas Observatory; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; ArgentinaFil: Hillier, D. John. University Of Pittsburgh; Estados UnidosFil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Schneider, Fabian. Argelander-Institut fur Astronomie; AlemaniaFil: González Jiménez, Nicolás. Argelander-Institut für Astronomie; AlemaniaFil: Langer, Norbert. Argelander-Institut für Astronomie; AlemaniaFil: Barba, Rodolfo Hector. Universidad de la Serena; ChileIop Publishing2014-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/10919Koenigsberger, Gloria; Morrell, Nidia Irene; Hillier, D. John; Gamen, Roberto Claudio; Schneider, Fabian; et al.; The HD 5980 multiple system: masses and evolutionary status; Iop Publishing; Astronomical Journal; 148; 4; 10-2014; 62-750004-6256enginfo:eu-repo/semantics/altIdentifier/doi/10.1088/0004-6256/148/4/62info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-6256/148/4/62/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 Técnicas2025-10-15T15:00:36Zoai:ri.conicet.gov.ar:11336/10919instacron: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:34982025-10-15 15:00:36.398CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The HD 5980 multiple system: masses and evolutionary status
title The HD 5980 multiple system: masses and evolutionary status
spellingShingle The HD 5980 multiple system: masses and evolutionary status
Koenigsberger, Gloria
Eclipsing Binaries
Evolution of Stars
Hd 5980 (Estrella)
Massive Stars
Wolf Rayet Stars
title_short The HD 5980 multiple system: masses and evolutionary status
title_full The HD 5980 multiple system: masses and evolutionary status
title_fullStr The HD 5980 multiple system: masses and evolutionary status
title_full_unstemmed The HD 5980 multiple system: masses and evolutionary status
title_sort The HD 5980 multiple system: masses and evolutionary status
dc.creator.none.fl_str_mv Koenigsberger, Gloria
Morrell, Nidia Irene
Hillier, D. John
Gamen, Roberto Claudio
Schneider, Fabian
González Jiménez, Nicolás
Langer, Norbert
Barba, Rodolfo Hector
author Koenigsberger, Gloria
author_facet Koenigsberger, Gloria
Morrell, Nidia Irene
Hillier, D. John
Gamen, Roberto Claudio
Schneider, Fabian
González Jiménez, Nicolás
Langer, Norbert
Barba, Rodolfo Hector
author_role author
author2 Morrell, Nidia Irene
Hillier, D. John
Gamen, Roberto Claudio
Schneider, Fabian
González Jiménez, Nicolás
Langer, Norbert
Barba, Rodolfo Hector
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Eclipsing Binaries
Evolution of Stars
Hd 5980 (Estrella)
Massive Stars
Wolf Rayet Stars
topic Eclipsing Binaries
Evolution of Stars
Hd 5980 (Estrella)
Massive Stars
Wolf Rayet Stars
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv New spectroscopic observations of the LBV/WR multiple system HD 5980 in the Small Magellanic Cloud are used to address the question of the masses and evolutionary status of the two very luminous stars in the 19.3 day eclipsing binary system. Two distinct components of the N V 4944 Å line are detected in emission and their radial velocity variations are used to derive masses of 61 and 66 M ☉, under the assumption that binary interaction effects on this atomic transition are negligible. We propose that this binary system is the product of quasi-chemically homogeneous evolution with little or no mass transfer. Thus, both of these binary stars may be candidates for gamma-ray burst progenitors or even pair instability supernovae. Analysis of the photospheric absorption lines belonging to the third-light object in the system confirm that it consists of an O-type star in a 96.56 day eccentric orbit (e = 0.82) around an unseen companion. The 5:1 period ratio and high eccentricities of the two binaries suggest that they may constitute a hierarchical quadruple system.
Fil: Koenigsberger, Gloria. Universidad Nacional Autónoma de México; México
Fil: Morrell, Nidia Irene. The Carnegie Observatories. Las Campanas Observatory; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto de Astrofísica de La Plata; Argentina
Fil: Hillier, D. John. University Of Pittsburgh; Estados Unidos
Fil: Gamen, Roberto Claudio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Astrofísica de la Plata; Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Schneider, Fabian. Argelander-Institut fur Astronomie; Alemania
Fil: González Jiménez, Nicolás. Argelander-Institut für Astronomie; Alemania
Fil: Langer, Norbert. Argelander-Institut für Astronomie; Alemania
Fil: Barba, Rodolfo Hector. Universidad de la Serena; Chile
description New spectroscopic observations of the LBV/WR multiple system HD 5980 in the Small Magellanic Cloud are used to address the question of the masses and evolutionary status of the two very luminous stars in the 19.3 day eclipsing binary system. Two distinct components of the N V 4944 Å line are detected in emission and their radial velocity variations are used to derive masses of 61 and 66 M ☉, under the assumption that binary interaction effects on this atomic transition are negligible. We propose that this binary system is the product of quasi-chemically homogeneous evolution with little or no mass transfer. Thus, both of these binary stars may be candidates for gamma-ray burst progenitors or even pair instability supernovae. Analysis of the photospheric absorption lines belonging to the third-light object in the system confirm that it consists of an O-type star in a 96.56 day eccentric orbit (e = 0.82) around an unseen companion. The 5:1 period ratio and high eccentricities of the two binaries suggest that they may constitute a hierarchical quadruple system.
publishDate 2014
dc.date.none.fl_str_mv 2014-10
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/11336/10919
Koenigsberger, Gloria; Morrell, Nidia Irene; Hillier, D. John; Gamen, Roberto Claudio; Schneider, Fabian; et al.; The HD 5980 multiple system: masses and evolutionary status; Iop Publishing; Astronomical Journal; 148; 4; 10-2014; 62-75
0004-6256
url http://hdl.handle.net/11336/10919
identifier_str_mv Koenigsberger, Gloria; Morrell, Nidia Irene; Hillier, D. John; Gamen, Roberto Claudio; Schneider, Fabian; et al.; The HD 5980 multiple system: masses and evolutionary status; Iop Publishing; Astronomical Journal; 148; 4; 10-2014; 62-75
0004-6256
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1088/0004-6256/148/4/62
info:eu-repo/semantics/altIdentifier/url/http://iopscience.iop.org/article/10.1088/0004-6256/148/4/62/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 13.22299

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