The eclipsing, double-lined, Of supergiant binary Cygnus OB2-B17
نویسندگان
چکیده
منابع مشابه
The distance to the Pleiades from orbital solution of the double - lined eclipsing binary HD 23642 ⋆ , ⋆ ⋆
Combining precise B,V photometry and radial velocities, we have been able to derive a firm orbital solution and accurate physical parameters for the newly discovered eclipsing binary HD 23642 in the Pleiades open cluster. The resulting distance to the binary and therefore to the cluster is 132±2 pc. This closely confirms the distance modulus obtained by classical main sequence fitting methods (...
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TeV Observations (during 1999, 2000 & 2001) of the Cygnus region using the HEGRA stereoscopic system of air Cherenkov telescopes have serendipitously revealed a signal positionally inside the core of the OB association Cygnus OB2, and ∼ 0.5◦ north of Cyg X-3. The source appears steady, has a post-trial significance of +4.6σ, indication for extension with radius 5.6′ at the ∼ 3σ level, and has a...
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Context. The compact association Cygnus OB2 is known to contain a large population of massive stars, but its total mass is currently a matter of debate. While recent surveys have uncovered large numbers of OB stars in the area around Cyg OB2, detailed study of the optically brightest among them suggests that most are not part of the association. Aims. We observed an additional sample of optical...
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ژورنال
عنوان ژورنال: Astronomy and Astrophysics
سال: 2010
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/200912123