The massive double-lined O-type binary HD 165052
- Autores
- Arias, Julia Inés; Morrell, Nidia Irene; Barbá, Rodolfo Héctor; Bosch, Guillermo Luis; Grosso, M.; Corcoran, Michael
- Año de publicación
- 2002
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present a new optical spectroscopic study of the O-type binary HD 165052 based on high-and intermediate-resolution CCD observations. We re-investigated the spectral classification of the binary components, obtaining spectral types of O6.5 V and O7.5 V for the primary and secondary, respectively, finding that both stars display weak CIII λ5696 emission in their spectra. We also determined a radial-velocity orbit for HD 165052 with a period of 2.95510 ± 0.00001 d, and semi-amplitudes of 94.8 and 104.7 ± 0.5km s-1, resulting in a mass ratio Q = 0.9. From a comparison with previous radial-velocity determinations, we found evidence of apsidal motion in the system. Several signatures of wind-wind collision, such as phase-locked variability of the X-ray flux and the Struve-Sahade effect, are also considered. It was also found that the reddening in the region should be normal, in contrast with previous determinations.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
Binaries: General
Stars: Early-type
Stars: Individual: Hd 165052
X-rays: Stars - 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:10915/84665
Ver los metadatos del registro completo
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The massive double-lined O-type binary HD 165052Arias, Julia InésMorrell, Nidia IreneBarbá, Rodolfo HéctorBosch, Guillermo LuisGrosso, M.Corcoran, MichaelCiencias AstronómicasBinaries: GeneralStars: Early-typeStars: Individual: Hd 165052X-rays: StarsWe present a new optical spectroscopic study of the O-type binary HD 165052 based on high-and intermediate-resolution CCD observations. We re-investigated the spectral classification of the binary components, obtaining spectral types of O6.5 V and O7.5 V for the primary and secondary, respectively, finding that both stars display weak CIII λ5696 emission in their spectra. We also determined a radial-velocity orbit for HD 165052 with a period of 2.95510 ± 0.00001 d, and semi-amplitudes of 94.8 and 104.7 ± 0.5km s<SUP>-1</SUP>, resulting in a mass ratio Q = 0.9. From a comparison with previous radial-velocity determinations, we found evidence of apsidal motion in the system. Several signatures of wind-wind collision, such as phase-locked variability of the X-ray flux and the Struve-Sahade effect, are also considered. It was also found that the reddening in the region should be normal, in contrast with previous determinations.Facultad de Ciencias Astronómicas y Geofísicas2002info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf202-210http://sedici.unlp.edu.ar/handle/10915/84665enginfo:eu-repo/semantics/altIdentifier/issn/0035-8711info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-8711.2002.05404.xinfo: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:UNLP2025-10-22T16:57:07Zoai:sedici.unlp.edu.ar:10915/84665Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 16:57:07.819SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
The massive double-lined O-type binary HD 165052 |
| title |
The massive double-lined O-type binary HD 165052 |
| spellingShingle |
The massive double-lined O-type binary HD 165052 Arias, Julia Inés Ciencias Astronómicas Binaries: General Stars: Early-type Stars: Individual: Hd 165052 X-rays: Stars |
| title_short |
The massive double-lined O-type binary HD 165052 |
| title_full |
The massive double-lined O-type binary HD 165052 |
| title_fullStr |
The massive double-lined O-type binary HD 165052 |
| title_full_unstemmed |
The massive double-lined O-type binary HD 165052 |
| title_sort |
The massive double-lined O-type binary HD 165052 |
| dc.creator.none.fl_str_mv |
Arias, Julia Inés Morrell, Nidia Irene Barbá, Rodolfo Héctor Bosch, Guillermo Luis Grosso, M. Corcoran, Michael |
| author |
Arias, Julia Inés |
| author_facet |
Arias, Julia Inés Morrell, Nidia Irene Barbá, Rodolfo Héctor Bosch, Guillermo Luis Grosso, M. Corcoran, Michael |
| author_role |
author |
| author2 |
Morrell, Nidia Irene Barbá, Rodolfo Héctor Bosch, Guillermo Luis Grosso, M. Corcoran, Michael |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Astronómicas Binaries: General Stars: Early-type Stars: Individual: Hd 165052 X-rays: Stars |
| topic |
Ciencias Astronómicas Binaries: General Stars: Early-type Stars: Individual: Hd 165052 X-rays: Stars |
| dc.description.none.fl_txt_mv |
We present a new optical spectroscopic study of the O-type binary HD 165052 based on high-and intermediate-resolution CCD observations. We re-investigated the spectral classification of the binary components, obtaining spectral types of O6.5 V and O7.5 V for the primary and secondary, respectively, finding that both stars display weak CIII λ5696 emission in their spectra. We also determined a radial-velocity orbit for HD 165052 with a period of 2.95510 ± 0.00001 d, and semi-amplitudes of 94.8 and 104.7 ± 0.5km s<SUP>-1</SUP>, resulting in a mass ratio Q = 0.9. From a comparison with previous radial-velocity determinations, we found evidence of apsidal motion in the system. Several signatures of wind-wind collision, such as phase-locked variability of the X-ray flux and the Struve-Sahade effect, are also considered. It was also found that the reddening in the region should be normal, in contrast with previous determinations. Facultad de Ciencias Astronómicas y Geofísicas |
| description |
We present a new optical spectroscopic study of the O-type binary HD 165052 based on high-and intermediate-resolution CCD observations. We re-investigated the spectral classification of the binary components, obtaining spectral types of O6.5 V and O7.5 V for the primary and secondary, respectively, finding that both stars display weak CIII λ5696 emission in their spectra. We also determined a radial-velocity orbit for HD 165052 with a period of 2.95510 ± 0.00001 d, and semi-amplitudes of 94.8 and 104.7 ± 0.5km s<SUP>-1</SUP>, resulting in a mass ratio Q = 0.9. From a comparison with previous radial-velocity determinations, we found evidence of apsidal motion in the system. Several signatures of wind-wind collision, such as phase-locked variability of the X-ray flux and the Struve-Sahade effect, are also considered. It was also found that the reddening in the region should be normal, in contrast with previous determinations. |
| publishDate |
2002 |
| dc.date.none.fl_str_mv |
2002 |
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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/10915/84665 |
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| dc.language.none.fl_str_mv |
eng |
| language |
eng |
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info:eu-repo/semantics/altIdentifier/issn/0035-8711 info:eu-repo/semantics/altIdentifier/doi/10.1046/j.1365-8711.2002.05404.x |
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openAccess |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
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