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...
Guardado en:
| Autores principales: | , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2013
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/85536 |
| Aporte de: |
| Sumario: | 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. |
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