Artículo
The massive double-lined O-type binary HD 165052
Arias, Julia Ines
; Morrell, Nidia Irene
; Barba, Rodolfo Hector
; Bosch, Guillermo Luis
; Grosso, Monica Gladys
; Corcoran, Michael
Fecha de publicación:
11/06/2002
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 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 C IIIλ5696 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±0.5 km 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.
Palabras clave:
Binaries
,
Early-Type
,
Individual: Hd 165052
,
X-Rays Stars
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IALP)
Articulos de INST.DE ASTROFISICA LA PLATA
Articulos de INST.DE ASTROFISICA LA PLATA
Articulos(ICATE)
Articulos de INST.D/CS ASTRONOMICAS D/LA TIERRA Y DEL ESPACIO
Articulos de INST.D/CS ASTRONOMICAS D/LA TIERRA Y DEL ESPACIO
Citación
Arias, Julia Ines; Morrell, Nidia Irene; Barba, Rodolfo Hector; Bosch, Guillermo Luis; Grosso, Monica Gladys; et al.; The massive double-lined O-type binary HD 165052; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 333; 1; 11-6-2002; 202-210
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