Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?

Autores
Ferrero Sosa, Gabriel Antonio; Gamen, Roberto Claudio; Benvenuto, Omar Gustavo; Fernández Lajús, Eduardo
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present a new set of radial velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling high-resolution optical spectra. The longitude of the periastron (ω = 60 ± 2°) shows a variation with respect to previous studies. We have determined the apsidal motion rate of the system, ω = 12.1 ± 0.° 3 yr-1, which was used to calculate the absolute masses of the binary components: M1 = 22.5 ± 1.0Mȯ and M2 = 20.5 ± 0.9Mȯ. Analysing the separated spectra, we have reclassified the components as O7Vz and O7.5Vz stars.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
Materia
Ciencias Astronómicas
Binaries: close
Binaries:Spectroscopic
Early
Fundamental parameters
Stars
Stars:Individual:HD 165052
stars:Massive.
Type
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/85536
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/85536
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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?Ferrero Sosa, Gabriel AntonioGamen, Roberto ClaudioBenvenuto, Omar GustavoFernández Lajús, EduardoCiencias AstronómicasBinaries: closeBinaries:SpectroscopicEarlyFundamental parametersStarsStars:Individual:HD 165052stars:Massive.TypeWe present a new set of radial velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling high-resolution optical spectra. The longitude of the periastron (ω = 60 ± 2°) shows a variation with respect to previous studies. We have determined the apsidal motion rate of the system, ω = 12.1 ± 0.° 3 yr-1, which was used to calculate the absolute masses of the binary components: M1 = 22.5 ± 1.0Mȯ and M2 = 20.5 ± 0.9Mȯ. Analysing the separated spectra, we have reclassified the components as O7Vz and O7.5Vz stars.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Astrofísica de La Plata2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf1300-1311http://sedici.unlp.edu.ar/handle/10915/85536enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt812info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T16:57:18Zoai:sedici.unlp.edu.ar:10915/85536Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:57:18.896SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
title Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
spellingShingle Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
Ferrero Sosa, Gabriel Antonio
Ciencias Astronómicas
Binaries: close
Binaries:Spectroscopic
Early
Fundamental parameters
Stars
Stars:Individual:HD 165052
stars:Massive.
Type
title_short Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
title_full Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
title_fullStr Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
title_full_unstemmed Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
title_sort Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
dc.creator.none.fl_str_mv Ferrero Sosa, Gabriel Antonio
Gamen, Roberto Claudio
Benvenuto, Omar Gustavo
Fernández Lajús, Eduardo
author Ferrero Sosa, Gabriel Antonio
author_facet Ferrero Sosa, Gabriel Antonio
Gamen, Roberto Claudio
Benvenuto, Omar Gustavo
Fernández Lajús, Eduardo
author_role author
author2 Gamen, Roberto Claudio
Benvenuto, Omar Gustavo
Fernández Lajús, Eduardo
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Binaries: close
Binaries:Spectroscopic
Early
Fundamental parameters
Stars
Stars:Individual:HD 165052
stars:Massive.
Type
topic Ciencias Astronómicas
Binaries: close
Binaries:Spectroscopic
Early
Fundamental parameters
Stars
Stars:Individual:HD 165052
stars:Massive.
Type
dc.description.none.fl_txt_mv We present a new set of radial velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling high-resolution optical spectra. The longitude of the periastron (ω = 60 ± 2°) shows a variation with respect to previous studies. We have determined the apsidal motion rate of the system, ω = 12.1 ± 0.° 3 yr-1, which was used to calculate the absolute masses of the binary components: M1 = 22.5 ± 1.0Mȯ and M2 = 20.5 ± 0.9Mȯ. Analysing the separated spectra, we have reclassified the components as O7Vz and O7.5Vz stars.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Astrofísica de La Plata
description We present a new set of radial velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling high-resolution optical spectra. The longitude of the periastron (ω = 60 ± 2°) shows a variation with respect to previous studies. We have determined the apsidal motion rate of the system, ω = 12.1 ± 0.° 3 yr-1, which was used to calculate the absolute masses of the binary components: M1 = 22.5 ± 1.0Mȯ and M2 = 20.5 ± 0.9Mȯ. Analysing the separated spectra, we have reclassified the components as O7Vz and O7.5Vz stars.
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/85536
url http://sedici.unlp.edu.ar/handle/10915/85536
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0035-8711
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt812
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
1300-1311
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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