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
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/85536
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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 |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/85536 |
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eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/0035-8711 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stt812 |
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