Artículo

Apsidal motion in massive close binary systems. I. HD 165052 an extreme case?

Ferrero Sosa, Gabriel Antonio; Gamen, Roberto ClaudioIcon ; Benvenuto, Omar GustavoIcon ; Fernandez Lajus, Eduardo EusebioIcon
Fecha de publicación: 06/2013
Editorial: Oxford University Press
Revista: Monthly Notices Of The Royal Astronomical Society
ISSN: 0035-8711
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

We present a new set of radial-velocity measurements of the spectroscopic binary HD 165052 obtained by disentangling of high-resolution optical spectra. The longitude of the periastron (60 +- 2 degrees) shows a variation with respect to previous studies. We have determined the apsidal motion rate of the system (12.1 +- 0.3 degree/yr), which was used to calculate the absolute masses of the binary components: M_1 = 22.5 +- 1.0 and M_2 = 20.5 +- 0.9 solar masses. Analysing the separated spectra we have re-classified the components as O7Vz and O7.5Vz stars
Palabras clave: Early Type Stars , Fundamental Parameters of Stars , Massive Stars , Hd 165052 (Estrella)
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/10967
URL: http://mnras.oxfordjournals.org/content/433/2/1300
URL: http://dx.doi.org/10.1093/mnras/stt812
Colecciones
Articulos(IALP)
Articulos de INST.DE ASTROFISICA LA PLATA
Citación
Ferrero Sosa, Gabriel Antonio; Gamen, Roberto Claudio; Benvenuto, Omar Gustavo; Fernandez Lajus, Eduardo Eusebio; Apsidal motion in massive close binary systems. I. HD 165052 an extreme case?; Oxford University Press; Monthly Notices Of The Royal Astronomical Society; 433; 2; 6-2013; 1300-1311
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