Very loose grouping of stars in the Cygnus constellation
| Cygnus OB7 |
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| Observation data (J2000.0 epoch) |
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| Constellation | Cygnus |
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| Right ascension | 21h 08m 00s[1] |
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| Declination | 47° 36′ 00″ |
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| Mean distance | 2,050 ly (630 pc[2]) |
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| Physical characteristics |
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| See also: Stellar association, Moving groups |
Cygnus OB7 is an OB association in the giant Cygnus molecular cloud complex, which also contains the star-forming regions Cygnus X, the North America Nebula and the Pelican Nebula. The Northern Coalsack Nebula of the Cygnus Rift lies in the foreground of this region. The molecular cloud has a large angular size of ~4° × 7°.[3]
References
- ^ "SIMBAD Astronomical Database". Results for Ass Cygnus OB7. Retrieved February 16, 2015.
- ^ Melnik, A. M.; Dambis, A. K. (2020). "Distance scale for high-luminosity stars in OB associations and in field with Gaia DR2. Spurious systematic motions". Astrophysics and Space Science. 365 (7): 112. arXiv:2006.14649. Bibcode:2020Ap&SS.365..112M. doi:10.1007/s10509-020-03827-0. S2CID 220128144.
- ^ Dobashi, Kazuhito; Matsumoto, Tomoaki; Shimoikura, Tomomi; Saito, Hiro; Akisato, Ko; Ohashi, Kenjiro; Nakagomi, Keisuke (2014-11-24). "Colliding Filaments and a Massive Dense Core in the Cygnus Ob 7 Molecular Cloud". The Astrophysical Journal. 797 (1). American Astronomical Society: 58. arXiv:1411.0942. Bibcode:2014ApJ...797...58D. doi:10.1088/0004-637x/797/1/58. ISSN 1538-4357. S2CID 118369651.
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