SIMBAD references

2004A&A...424L..39D - Astronomy and Astrophysics, volume 424L39-42 (2004/9-4)

A Spectroscopic study of the non-thermal radio emitter CygOB2#8A: Discovery of a new binary system.

DE BECKER M., RAUW G. and MANFROID J.

Abstract (from CDS):

We present the results of a spectroscopic campaign revealing that the non-thermal radio emitter CygOB2#8A is an O6+O5.5 binary system. We propose the very first orbital solution indicating a period of about 21.9 days. The system appears to be eccentric (0.24±0.04) and is likely seen under a rather low inclination angle. The mass ratio of the components is close to unity. The impact of the binarity of this star in the framework of our understanding of non-thermal radio emission from early-type stars is briefly discussed.

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Journal keyword(s): binaries: spectroscopic - stars: early-type - stars: fundamental parameters - stars: individual: CygOB2#8A

Simbad objects: 4

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