玉夫座ζ
观测资料 历元 J2000 | |
---|---|
星座 | 玉夫座 |
星官 | |
赤经 | 00h 02m 19.92035s[1] |
赤纬 | -29° 43′ 13.4873″[1] |
视星等(V) | 5.04[2] |
特性 | |
光谱分类 | B5 V[3] |
U−B 色指数 | -0.55[4] |
B−V 色指数 | -0.16[4] |
天体测定 | |
径向速度 (Rv) | ±1.6 +8.6[5] km/s |
自行 (μ) | 赤经:+9.34[1] mas/yr 赤纬:+14.50[1] mas/yr |
视差 (π) | 6.49 ± 0.25[1] mas |
距离 | 500 ± 20 ly (154 ± 6 pc) |
绝对星等 (MV) | −0.89[2] |
轨道[6] | |
绕行周期 (P) | ±22 d 1,740 |
偏心率 (e) | ±0.043 0.316 |
近心点 历元 (T) | 2453381 ± 37 JD |
近心点幅角 (ω) (secondary) | ±6.9° 43.5 |
半振幅 (K1) (primary) | ±0.6 12.4km/s |
详细资料 | |
质量 | 5.5[7] M☉ |
亮度 | 496[2] L☉ |
温度 | 16,100[3] K |
金属量 [Fe/H] | 0.00[8] dex |
自转速度 (v sin i) | 15[9] km/s |
其他命名 | |
参考资料库 | |
SIMBAD | 资料 |
玉夫座ζ(英语:Zeta Sculptoris)是在玉夫座的一个多星系统。它的视星等仅有+5.04,裸眼隐约可见[2]。它的年周视差为6.49毫角秒,估计距离太阳约为500光年,并以+8.6km/s的径向速度远离而去[5]。从地球上观察,玉夫座ζ邻近疏散星团布兰科1,但它比布兰科1更靠近地球[6]。
它的主星,玉夫座ζA是只有一祖谱线的低振幅联星,轨道周期4.8年,轨道离心率0.32 [6]。此对可见的成员是B型主序星,光谱类型为B5V[3]。它有一颗13等的伴星,玉夫座ζB,在角距离3角秒,方位角330度之处(1927年)[10]。根据埃格尔顿(Eggleton)和东科维宁(Tokovinin)的观测(2008年),它最有可能与主星引力绑定[11]。
参考资料
- ^ 1.0 1.1 1.2 1.3 1.4 Van Leeuwen, F. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. 2007, 474 (2): 653. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357. Vizier catalog entry (页面存档备份,存于互联网档案馆)
- ^ 2.0 2.1 2.2 2.3 Anderson, E.; Francis, Ch. XHIP: An extended hipparcos compilation. Astronomy Letters. 2012, 38 (5): 331. Bibcode:2012AstL...38..331A. arXiv:1108.4971 . doi:10.1134/S1063773712050015. Vizier catalog entry (页面存档备份,存于互联网档案馆)
- ^ 3.0 3.1 3.2 Zorec, J.; Cidale, L.; Arias, M. L.; Frémat, Y.; Muratore, M. F.; Torres, A. F.; Martayan, C. Fundamental parameters of B supergiants from the BCD system. Astronomy and Astrophysics. 2009, 501: 297. Bibcode:2009A&A...501..297Z. arXiv:0903.5134 . doi:10.1051/0004-6361/200811147.
- ^ 4.0 4.1 Mallama, A. Sloan Magnitudes for the Brightest Stars. The Journal of the American Association of Variable Star Observers. 2014, 42: 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry (页面存档备份,存于互联网档案馆)
- ^ 5.0 5.1 Gontcharov, G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system. Astronomy Letters. 2006, 32 (11): 759. Bibcode:2006AstL...32..759G. arXiv:1606.08053 . doi:10.1134/S1063773706110065.
- ^ 6.0 6.1 6.2 González, J. F.; Levato, H., Spectroscopic study of the open cluster Blanco 1, Astronomy and Astrophysics, November 2009, 507 (1): 541–547, Bibcode:2009A&A...507..541G, doi:10.1051/0004-6361/200912772
- ^ Tetzlaff, N.; Neuhäuser, R.; Hohle, M. M. A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun. Monthly Notices of the Royal Astronomical Society. 2011, 410: 190. Bibcode:2011MNRAS.410..190T. arXiv:1007.4883 . doi:10.1111/j.1365-2966.2010.17434.x. Vizier catalog entry (页面存档备份,存于互联网档案馆)
- ^ Gontcharov, G. A. Dependence of kinematics on the age of stars in the solar neighborhood. Astronomy Letters. 2012, 38 (12): 771. Bibcode:2012AstL...38..771G. arXiv:1606.08814 . doi:10.1134/S1063773712120031. Vizier catalog entry (页面存档备份,存于互联网档案馆)
- ^ Abt, Helmut A.; Levato, Hugo; Grosso, Monica. Rotational Velocities of B Stars. The Astrophysical Journal. 2002, 573: 359. Bibcode:2002ApJ...573..359A. doi:10.1086/340590 .
- ^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog. The Astronomical Journal. 2001, 122 (6): 3466. Bibcode:2001AJ....122.3466M. doi:10.1086/323920 . Vizier catalog entry (页面存档备份,存于互联网档案馆)
- ^ Eggleton, P. P.; Tokovinin, A. A. A catalogue of multiplicity among bright stellar systems. Monthly Notices of the Royal Astronomical Society. 2008, 389 (2): 869. Bibcode:2008MNRAS.389..869E. arXiv:0806.2878 . doi:10.1111/j.1365-2966.2008.13596.x.