Hodge 53-47: An early O-type double-lined binary in the Small Magellanic Cloud

We present a spectroscopic and photometric study of the double-lined binary Hodge 53-47 in the Small Magellanic Cloud. We determine for the binary components spectral types of O6 V + O4-5 III(f). Through a simultaneous light and radial velocity curve analysis via the Wilson-Devinney code we find abs...

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Detalles Bibliográficos
Autores principales: Morrell, Nidia Irene, Ostrov, Pablo Gabriel, Massey, Philip, Gamen, Roberto Claudio
Formato: Articulo
Lenguaje:Inglés
Publicado: 2003
Materias:
Ciencias Astronómicas
Binaries: Close
Binaries: Eclipsing
Binaries: Spectroscopic
Stars: Early-Type
Stars: Fundamental parameters
Stars: Individual: Hodge 53-47
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/84574
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:We present a spectroscopic and photometric study of the double-lined binary Hodge 53-47 in the Small Magellanic Cloud. We determine for the binary components spectral types of O6 V + O4-5 III(f). Through a simultaneous light and radial velocity curve analysis via the Wilson-Devinney code we find absolute masses of ∼26 M⊙ and ∼ 16 M⊙ and radii of ∼ 10.1 R⊙ and ∼8.4 R⊙ for the O6 V and O4-5 III(f) components, respectively. The relatively low mass found for the O4-5 III(f) component suggests that mass transfer and loss have played a significant role in the evolution of these stars.

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