英仙座OB1是在北天球英仙座的一个OB星协。它以双星团NGC 869NGC 884)为中心[4],名称来源于银河系英仙臂[7]。星协成员中最明亮的恒星是蓝超巨星大陵一(英仙座9)[3]

英仙座OB1
在英仙座OB1心脏的双星团
Credit: 克瑞斯古德瑞(Chrisguidry)
观测数据
星座英仙座
赤经02h 21m[1]
赤纬+57° 36′[1]
平均距离5.9 kly(1.8 kpc[2]
Span1,000 × 750 light years[3]
径向速度−43.4[2] km/s
物理性质
成员149[4]
OB星≥65[5]
其它名称Per OB1[6]
相关条目:星协移动星群

参考资料

编辑
  1. ^ 1.0 1.1 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. ^ 2.0 2.1 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. ^ 3.0 3.1 Crossen, Craig; Rhemann, Gerald. Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Science & Business Media. 2012: 93. ISBN 9783709106266. 
  4. ^ 4.0 4.1 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. ^ Per OB1. SIMBAD. 斯特拉斯堡天文资料中心. 
  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.