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南十字座ζ

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南十字座ζ
观测资料
历元 J2000
星座 南十字座
星官
赤经 12h 18m 26.24772s[1]
赤纬 –64° 00′ 11.0528″[1]
视星等（V） 4.04[2]
特性
光谱分类B2.5V[3]
U−B 色指数–0.68[2]
B−V 色指数–0.17[2]
天体测定
径向速度 (Rv)+15.8[4] km/s
自行 (μ) 赤经：−33.80[1] mas/yr
赤纬：−10.15[1] mas/yr
视差 (π)9.12 ± 0.45[1] mas
距离360 ± 20 ly
(110 ± 5 pc)
绝对星等 (MV)−1.13[5]
详细资料
质量6.4±0.1[6] M☉
亮度737[5] L☉
温度3,832[7] K
自转速度 (v sin i)115[8] km/s
年龄20.0±4.3[6] Myr
其他命名
ζ Cru、​CPD−63° 2235、​HD 106983、​HIP 60009、​HR 4679、​SAO 251841[9]
参考数据库
SIMBAD资料

南十字座ζ是在南十字座南部的一颗联星。它可以用肉眼直接看见，视星等为4.06m，距离太阳大约360光年。它是天蝎-半人马星协的子集团，下天蝎-半人马座星协的成员[10]。

这是一颗双谱的光谱联星[11]。光谱与B型主序星匹配，恒星分类属于B2.5V。它有一颗微弱的视觉伴星，视星等12.49[12]。

参考资料

  1. ^ 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 可免费查阅. doi:10.1051/0004-6361:20078357.  Vizier catalog entry （页面存档备份，存于互联网档案馆）
  2. ^ 2.0 2.1 2.2 Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewskj, W. Z. UBVRIJKL photometry of the bright stars. Communications of the Lunar and Planetary Laboratory. 1966, 4 (99): 99. Bibcode:1966CoLPL...4...99J. 
  3. ^ Hiltner, W. A.; Garrison, R. F.; Schild, R. E. MK Spectral Types for Bright Southern OB Stars. Astrophysical Journal. July 1969, 157: 313–326. Bibcode:1969ApJ...157..313H. doi:10.1086/150069. 
  4. ^ Evans, D. S. The Revision of the General Catalogue of Radial Velocities. Batten, Alan Henry; Heard, John Frederick (编). Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30. University of Toronto: International Astronomical Union. June 20–24, 1966. Bibcode:1967IAUS...30...57E. 
  5. ^ 5.0 5.1 Anderson, E.; Francis, Ch., XHIP: An extended hipparcos compilation, Astronomy Letters, 2012, 38 (5): 331, Bibcode:2012AstL...38..331A, arXiv:1108.4971 可免费查阅, doi:10.1134/S1063773712050015. 
  6. ^ 6.0 6.1 Tetzlaff, N.; et al, A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun, Monthly Notices of the Royal Astronomical Society, January 2011, 410 (1): 190–200, Bibcode:2011MNRAS.410..190T, arXiv:1007.4883 可免费查阅, doi:10.1111/j.1365-2966.2010.17434.x. 
  7. ^ Gerbaldi, M.; Faraggiana, R.; Balin, N. Binary systems with post-T Tauri secondaries. Astronomy and Astrophysics. November 2001, 379: 162–184. Bibcode:2001A&A...379..162G. doi:10.1051/0004-6361:20011298. 
  8. ^ Bernacca, P. L.; Perinotto, M. A catalogue of stellar rotational velocities. Contributi Osservatorio Astronomico di Padova in Asiago. 1970, 239 (1): 1. Bibcode:1970CoAsi.239....1B. 
  9. ^ zet Cru. SIMBAD. 斯特拉斯堡天文资料中心. 
  10. ^ Chen, Christine H.; et al, A Spitzer MIPS Study of 2.5-2.0 M⊙ Stars in Scorpius-Centaurus, The Astrophysical Journal, September 2012, 756 (2): 24, Bibcode:2012ApJ...756..133C, arXiv:1207.3415 可免费查阅, doi:10.1088/0004-637X/756/2/133, 133. 
  11. ^ Chini, R.; et al, A spectroscopic survey on the multiplicity of high-mass stars, Monthly Notices of the Royal Astronomical Society, 2012, 424 (3): 1925, Bibcode:2012MNRAS.424.1925C, arXiv:1205.5238 可免费查阅, doi:10.1111/j.1365-2966.2012.21317.x. 
  12. ^ Gahm, G. F.; Ahlin, P.; Lindroos, K. P. A study of visual double stars with early type primaries. I - Spectroscopic results. Astronomy and Astrophysics Supplement Series. January 1983, 51: 143–159. Bibcode:1983A&AS...51..143G. 
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