B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula

Autores
Gonzalez, Jorge Federico; Hubrig, S.; Przybilla, Norbert; Carroll, T. A.; Nieva, Maria Fernanda; Ilyin, I.; Järvinen, S.; Morel, T.; Schöller, M.; Castro, N.; Barba, Rodolfo Hector; de Koter, A.; Schneider, F. R. N.; Kholtygin, A. F.; Butler, K.; Veramendi Pont, María Eugenia; Langer, N.; The BOB Collaboration
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
HD 164492C is a spectroscopic triple stellar system that has beenrecently detected to possess a strong magnetic field. We have obtainedhigh-resolution spectroscopic and spectropolarimetric observations overa timespan of two years and derived physical, chemical, and magneticproperties for this object. The system is formed by an eccentric closespectroscopic binary (Ca1-Ca2) with a period of 12.5 days, and a massivetertiary Cb. We calculated the orbital parameters of the close pair,reconstructed the spectra of the three components, and determinedatmospheric parameters and chemical abundances by spectral synthesis.From spectropolarimetric observations, multi-epoch measurements of thelongitudinal magnetic fields were obtained. The magnetic field isstrongly variable on timescales of a few days, with a most probableperiod in the range of 1.4-1.6 days. Star Cb with Teff? 25 000 K is the apparently fastest rotator and the most massivestar of this triple system and has anomalous chemical abundances with amarked overabundance of helium, 0.35±0.04 by number. Weidentified this star as being responsible for the observed magneticfield, although the presence of magnetic fields in the components of theCa pair cannot be excluded. Star Ca1 with a temperature of about 24 000K presents a normal chemical pattern, while the least massive star Ca2is a mid-B type star (Teff ? 15 000 K) with anoverabundance of silicon. The obtained stellar parameters of the systemcomponents suggest a distance of 1.5 kpc and an age of 10-15 Myr.
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Hubrig, S.. Leibniz Institut für Astrophysik; Alemania
Fil: Przybilla, Norbert. Universidad de Innsbruck; Austria
Fil: Carroll, T. A.. Leibniz Institut für Astrophysik; Alemania
Fil: Nieva, Maria Fernanda. Universidad de Innsbruck; Austria
Fil: Ilyin, I.. Leibniz Institut für Astrophysik; Alemania
Fil: Järvinen, S.. Leibniz Institut für Astrophysik; Alemania
Fil: Morel, T.. Université de Liège; Bélgica
Fil: Schöller, M.. European Southern Observatory; Alemania
Fil: Castro, N.. University of Michigan; Estados Unidos. Universitat Bonn; Alemania
Fil: Barba, Rodolfo Hector. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: de Koter, A.. University of Amsterdam; Países Bajos. Katholikie Universiteit Leuven; Bélgica
Fil: Schneider, F. R. N.. Denys Wilkinson Building; Reino Unido
Fil: Kholtygin, A. F.. St. Petersburg State University; Rusia
Fil: Butler, K.. Universitäts-Sternwarte München; Alemania
Fil: Veramendi Pont, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
Fil: Langer, N.. Universitat Bonn; Alemania
Fil: The BOB Collaboration. No especifica;
Materia
STARS: EARLY TYPE
BINARIES: SPECTROSCOPIC
STARS: MAGNETIC FIELDS
STARS: ABUNDANCES
STARS: FUNDAMENTAL PARAMETERS
STARS: INDIVIDUAL: HD 164492C
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:11336/63184
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/63184
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebulaGonzalez, Jorge FedericoHubrig, S.Przybilla, NorbertCarroll, T. A.Nieva, Maria FernandaIlyin, I.Järvinen, S.Morel, T.Schöller, M.Castro, N.Barba, Rodolfo Hectorde Koter, A.Schneider, F. R. N.Kholtygin, A. F.Butler, K.Veramendi Pont, María EugeniaLanger, N.The BOB CollaborationSTARS: EARLY TYPEBINARIES: SPECTROSCOPICSTARS: MAGNETIC FIELDSSTARS: ABUNDANCESSTARS: FUNDAMENTAL PARAMETERSSTARS: INDIVIDUAL: HD 164492Chttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1HD 164492C is a spectroscopic triple stellar system that has beenrecently detected to possess a strong magnetic field. We have obtainedhigh-resolution spectroscopic and spectropolarimetric observations overa timespan of two years and derived physical, chemical, and magneticproperties for this object. The system is formed by an eccentric closespectroscopic binary (Ca1-Ca2) with a period of 12.5 days, and a massivetertiary Cb. We calculated the orbital parameters of the close pair,reconstructed the spectra of the three components, and determinedatmospheric parameters and chemical abundances by spectral synthesis.From spectropolarimetric observations, multi-epoch measurements of thelongitudinal magnetic fields were obtained. The magnetic field isstrongly variable on timescales of a few days, with a most probableperiod in the range of 1.4-1.6 days. Star Cb with T<sub>eff</sub>? 25 000 K is the apparently fastest rotator and the most massivestar of this triple system and has anomalous chemical abundances with amarked overabundance of helium, 0.35±0.04 by number. Weidentified this star as being responsible for the observed magneticfield, although the presence of magnetic fields in the components of theCa pair cannot be excluded. Star Ca1 with a temperature of about 24 000K presents a normal chemical pattern, while the least massive star Ca2is a mid-B type star (T<sub>eff</sub> ? 15 000 K) with anoverabundance of silicon. The obtained stellar parameters of the systemcomponents suggest a distance of 1.5 kpc and an age of 10-15 Myr.Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Hubrig, S.. Leibniz Institut für Astrophysik; AlemaniaFil: Przybilla, Norbert. Universidad de Innsbruck; AustriaFil: Carroll, T. A.. Leibniz Institut für Astrophysik; AlemaniaFil: Nieva, Maria Fernanda. Universidad de Innsbruck; AustriaFil: Ilyin, I.. Leibniz Institut für Astrophysik; AlemaniaFil: Järvinen, S.. Leibniz Institut für Astrophysik; AlemaniaFil: Morel, T.. Université de Liège; BélgicaFil: Schöller, M.. European Southern Observatory; AlemaniaFil: Castro, N.. University of Michigan; Estados Unidos. Universitat Bonn; AlemaniaFil: Barba, Rodolfo Hector. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: de Koter, A.. University of Amsterdam; Países Bajos. Katholikie Universiteit Leuven; BélgicaFil: Schneider, F. R. N.. Denys Wilkinson Building; Reino UnidoFil: Kholtygin, A. F.. St. Petersburg State University; RusiaFil: Butler, K.. Universitäts-Sternwarte München; AlemaniaFil: Veramendi Pont, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; ArgentinaFil: Langer, N.. Universitat Bonn; AlemaniaFil: The BOB Collaboration. No especifica;Wiley Blackwell Publishing, Inc2017-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/63184Gonzalez, Jorge Federico; Hubrig, S.; Przybilla, Norbert; Carroll, T. A.; Nieva, Maria Fernanda; et al.; B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 467; 1; 1-2017; 437-4500035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx105info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/467/1/437/2907764info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1701.03514info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:16:01Zoai:ri.conicet.gov.ar:11336/63184instacron: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:34982025-10-22 12:16:01.82CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula
title B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula
spellingShingle B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula
Gonzalez, Jorge Federico
STARS: EARLY TYPE
BINARIES: SPECTROSCOPIC
STARS: MAGNETIC FIELDS
STARS: ABUNDANCES
STARS: FUNDAMENTAL PARAMETERS
STARS: INDIVIDUAL: HD 164492C
title_short B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula
title_full B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula
title_fullStr B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula
title_full_unstemmed B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula
title_sort B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula
dc.creator.none.fl_str_mv Gonzalez, Jorge Federico
Hubrig, S.
Przybilla, Norbert
Carroll, T. A.
Nieva, Maria Fernanda
Ilyin, I.
Järvinen, S.
Morel, T.
Schöller, M.
Castro, N.
Barba, Rodolfo Hector
de Koter, A.
Schneider, F. R. N.
Kholtygin, A. F.
Butler, K.
Veramendi Pont, María Eugenia
Langer, N.
The BOB Collaboration
author Gonzalez, Jorge Federico
author_facet Gonzalez, Jorge Federico
Hubrig, S.
Przybilla, Norbert
Carroll, T. A.
Nieva, Maria Fernanda
Ilyin, I.
Järvinen, S.
Morel, T.
Schöller, M.
Castro, N.
Barba, Rodolfo Hector
de Koter, A.
Schneider, F. R. N.
Kholtygin, A. F.
Butler, K.
Veramendi Pont, María Eugenia
Langer, N.
The BOB Collaboration
author_role author
author2 Hubrig, S.
Przybilla, Norbert
Carroll, T. A.
Nieva, Maria Fernanda
Ilyin, I.
Järvinen, S.
Morel, T.
Schöller, M.
Castro, N.
Barba, Rodolfo Hector
de Koter, A.
Schneider, F. R. N.
Kholtygin, A. F.
Butler, K.
Veramendi Pont, María Eugenia
Langer, N.
The BOB Collaboration
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv STARS: EARLY TYPE
BINARIES: SPECTROSCOPIC
STARS: MAGNETIC FIELDS
STARS: ABUNDANCES
STARS: FUNDAMENTAL PARAMETERS
STARS: INDIVIDUAL: HD 164492C
topic STARS: EARLY TYPE
BINARIES: SPECTROSCOPIC
STARS: MAGNETIC FIELDS
STARS: ABUNDANCES
STARS: FUNDAMENTAL PARAMETERS
STARS: INDIVIDUAL: HD 164492C
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv HD 164492C is a spectroscopic triple stellar system that has beenrecently detected to possess a strong magnetic field. We have obtainedhigh-resolution spectroscopic and spectropolarimetric observations overa timespan of two years and derived physical, chemical, and magneticproperties for this object. The system is formed by an eccentric closespectroscopic binary (Ca1-Ca2) with a period of 12.5 days, and a massivetertiary Cb. We calculated the orbital parameters of the close pair,reconstructed the spectra of the three components, and determinedatmospheric parameters and chemical abundances by spectral synthesis.From spectropolarimetric observations, multi-epoch measurements of thelongitudinal magnetic fields were obtained. The magnetic field isstrongly variable on timescales of a few days, with a most probableperiod in the range of 1.4-1.6 days. Star Cb with T<sub>eff</sub>? 25 000 K is the apparently fastest rotator and the most massivestar of this triple system and has anomalous chemical abundances with amarked overabundance of helium, 0.35±0.04 by number. Weidentified this star as being responsible for the observed magneticfield, although the presence of magnetic fields in the components of theCa pair cannot be excluded. Star Ca1 with a temperature of about 24 000K presents a normal chemical pattern, while the least massive star Ca2is a mid-B type star (T<sub>eff</sub> ? 15 000 K) with anoverabundance of silicon. The obtained stellar parameters of the systemcomponents suggest a distance of 1.5 kpc and an age of 10-15 Myr.
Fil: Gonzalez, Jorge Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Hubrig, S.. Leibniz Institut für Astrophysik; Alemania
Fil: Przybilla, Norbert. Universidad de Innsbruck; Austria
Fil: Carroll, T. A.. Leibniz Institut für Astrophysik; Alemania
Fil: Nieva, Maria Fernanda. Universidad de Innsbruck; Austria
Fil: Ilyin, I.. Leibniz Institut für Astrophysik; Alemania
Fil: Järvinen, S.. Leibniz Institut für Astrophysik; Alemania
Fil: Morel, T.. Université de Liège; Bélgica
Fil: Schöller, M.. European Southern Observatory; Alemania
Fil: Castro, N.. University of Michigan; Estados Unidos. Universitat Bonn; Alemania
Fil: Barba, Rodolfo Hector. Universidad de La Serena; Chile. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: de Koter, A.. University of Amsterdam; Países Bajos. Katholikie Universiteit Leuven; Bélgica
Fil: Schneider, F. R. N.. Denys Wilkinson Building; Reino Unido
Fil: Kholtygin, A. F.. St. Petersburg State University; Rusia
Fil: Butler, K.. Universitäts-Sternwarte München; Alemania
Fil: Veramendi Pont, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
Fil: Langer, N.. Universitat Bonn; Alemania
Fil: The BOB Collaboration. No especifica;
description HD 164492C is a spectroscopic triple stellar system that has beenrecently detected to possess a strong magnetic field. We have obtainedhigh-resolution spectroscopic and spectropolarimetric observations overa timespan of two years and derived physical, chemical, and magneticproperties for this object. The system is formed by an eccentric closespectroscopic binary (Ca1-Ca2) with a period of 12.5 days, and a massivetertiary Cb. We calculated the orbital parameters of the close pair,reconstructed the spectra of the three components, and determinedatmospheric parameters and chemical abundances by spectral synthesis.From spectropolarimetric observations, multi-epoch measurements of thelongitudinal magnetic fields were obtained. The magnetic field isstrongly variable on timescales of a few days, with a most probableperiod in the range of 1.4-1.6 days. Star Cb with T<sub>eff</sub>? 25 000 K is the apparently fastest rotator and the most massivestar of this triple system and has anomalous chemical abundances with amarked overabundance of helium, 0.35±0.04 by number. Weidentified this star as being responsible for the observed magneticfield, although the presence of magnetic fields in the components of theCa pair cannot be excluded. Star Ca1 with a temperature of about 24 000K presents a normal chemical pattern, while the least massive star Ca2is a mid-B type star (T<sub>eff</sub> ? 15 000 K) with anoverabundance of silicon. The obtained stellar parameters of the systemcomponents suggest a distance of 1.5 kpc and an age of 10-15 Myr.
publishDate 2017
dc.date.none.fl_str_mv 2017-01
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/11336/63184
Gonzalez, Jorge Federico; Hubrig, S.; Przybilla, Norbert; Carroll, T. A.; Nieva, Maria Fernanda; et al.; B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 467; 1; 1-2017; 437-450
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/63184
identifier_str_mv Gonzalez, Jorge Federico; Hubrig, S.; Przybilla, Norbert; Carroll, T. A.; Nieva, Maria Fernanda; et al.; B fields in OB stars (BOB): The magnetic triple stellar system HD 164492C in the Trifid nebula; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 467; 1; 1-2017; 437-450
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stx105
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-abstract/467/1/437/2907764
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1701.03514
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
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
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 12.982451

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