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

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 sy...

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Detalles Bibliográficos
Autores principales: Ferrero Sosa, Gabriel Antonio, Gamen, Roberto Claudio, Benvenuto, Omar Gustavo, Fernández Lajús, Eduardo
Formato: Articulo
Lenguaje:Inglés
Publicado: 2013
Materias:
Ciencias Astronómicas
Binaries: close
Binaries:Spectroscopic
Early
Fundamental parameters
Stars
Stars:Individual:HD 165052
stars:Massive.
Type
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/85536
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-85536
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Binaries: close
Binaries:Spectroscopic
Early
Fundamental parameters
Stars
Stars:Individual:HD 165052
stars:Massive.
Type
spellingShingle Ciencias Astronómicas
Binaries: close
Binaries:Spectroscopic
Early
Fundamental parameters
Stars
Stars:Individual:HD 165052
stars:Massive.
Type
Ferrero Sosa, Gabriel Antonio
Gamen, Roberto Claudio
Benvenuto, Omar Gustavo
Fernández Lajús, Eduardo
Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
topic_facet Ciencias Astronómicas
Binaries: close
Binaries:Spectroscopic
Early
Fundamental parameters
Stars
Stars:Individual:HD 165052
stars:Massive.
Type
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.
format Articulo
Articulo
author Ferrero Sosa, Gabriel Antonio
Gamen, Roberto Claudio
Benvenuto, Omar Gustavo
Fernández Lajús, Eduardo
author_facet Ferrero Sosa, Gabriel Antonio
Gamen, Roberto Claudio
Benvenuto, Omar Gustavo
Fernández Lajús, Eduardo
author_sort Ferrero Sosa, Gabriel Antonio
title Apsidal motion in massive close binary systems - I: HD 165052, an extreme case?
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?
publishDate 2013
url http://sedici.unlp.edu.ar/handle/10915/85536
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