英仙座OB1

英仙座OB1是在北天球英仙座的一個OB星協。它以雙星團（NGC 869和NGC 884）為中心^[4]，名稱來源於銀河系的英仙臂^[7]。星協成員中最明亮的恆星是藍超巨星大陵一（英仙座9）^[3]。

英仙座OB1
在英仙座OB1心臟的雙星團。 Credit: 克瑞斯古德瑞（Chrisguidry）
觀測數據
星座	英仙座
赤經	02h 21m[1]
赤緯	+57° 36′[1]
平均距離	5.9 kly（1.8 kpc）[2]
Span	1,000 × 750 light years[3]
徑向速度	−43.4[2] km/s
物理性質
成員	149[4]
OB星	7001650000000000000♠≥65[5]
其它名稱	Per OB1[6]
相關條目:星協、移動星群

參考資料

1. Sitnik, T. G. The Line-of-Sight Velocities of OB Associations and Molecular Clouds in a Wide Solar Neighborhood: The Streaming Motions of Stars and Gas in the Perseus Arm. Astronomy Letters. May 2003, 29: 311–320. Bibcode:2003AstL...29..311S. doi:10.1134/1.1573280.
2. Mel'Nik, A. M.; Dambis, A. K. Kinematics of OB-associations and the new reduction of the Hipparcos data. Monthly Notices of the Royal Astronomical Society. 2009, 400 (1): 518. Bibcode:2009MNRAS.400..518M. arXiv:0909.0618 . doi:10.1111/j.1365-2966.2009.15484.x .
3. Crossen, Craig; Rhemann, Gerald. Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Science & Business Media. 2012: 93. ISBN 9783709106266.
4. Lee, Hsu-Tai; Lim, Jeremy. On the Formation of Perseus OB1 at High Galactic Latitudes. The Astrophysical Journal. June 2008, 679 (2): 1352–1363. Bibcode:2008ApJ...679.1352L. arXiv:0804.4520 . doi:10.1086/587801.
5. Beech, Martin; Slawson, Robert W. Are There Really Blue Stragglers in Per OB1?. Astrophysics and Space Science. December 1995, 234 (2): 217–221. Bibcode:1995Ap&SS.234..217B. doi:10.1007/BF00627667.
6. [

   http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=Per+OB1

   Per OB1] 請檢查|url=值 (幫助). SIMBAD. 斯特拉斯堡天文資料中心.
7. Inglis, Michael. Observer’s Guide to Star Clusters. New York, New York: Springer Science & Business Media. 2013: 184. ISBN 978-1-4614-7567-5.