New Massive Binaries in the Cygnus OB2 Association
نویسندگان
چکیده
منابع مشابه
New very massive stars in Cygnus OB2
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...
متن کاملNew Very Massive Stars in Cygnus Ob2 Journal Article Astrophysics New Very Massive Stars in Cygnus Ob2
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...
متن کاملNew Very Massive Stars in Cygnus Ob2 Journal Article
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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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...
متن کاملThe Protoplanetary Disks in the Nearby Massive Star Forming Region Cygnus Ob2
The formation of stars in massive clusters is one of the main modes of the star formation process. However, the study of massive star forming regions is hampered by their typically large distances to the Sun. One exception to this is the massive star forming region Cygnus OB2 in the Cygnus X region, at the distance of ∼ 1400 pc. Cygnus OB2 hosts very rich populations of massive and low-mass sta...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2008
ISSN: 0004-637X,1538-4357
DOI: 10.1086/587777