For faster navigation, this Iframe is preloading the Wikiwand page for 十字架三.

十字架三

十字架三A/B(Mimosa)
十字架三的位置(红圈)
观测资料
历元 J2000
星座 南十字座
星官 十字架近南极星区
赤经 12h 47m 43.26877s[1]
赤纬 –59° 41′ 19.5792″[1]
视星等(V) 1.25[2] (1.23 - 1.31[3])
特性
光谱分类B0.5 III[4] / B2V[5]
U−B 色指数–0.98[2]
B−V 色指数–0.23[2]
变星类型仙王座β[4]
天体测定
径向速度 (Rv)+15.6[6] km/s
自行 (μ) 赤经:–42.97[1] mas/yr
赤纬:–16.18[1] mas/yr
视差 (π)11.71 ± 0.98[1] mas
距离280 ± 20 ly
(85 ± 7 pc)
详细资料
A
质量16[4] M
半径8.4 ± 0.6[4] R
表面重力 (log g)3.6 ± 0.1[4]
亮度34,000[4] L
温度27,000 ± 1,000[4] K
金属量 [Fe/H]–0.08[7] dex
自转3.6 days[4]
自转速度 (v sin i)35[4] km/s
年龄8 to 11 million[4]
B
质量10[5] M
轨道[5]
主星β Crucis A
伴星十字架三B
绕行周期 (P)1828.0 ± 2.5 days
半长轴 (a)8.7 AU
偏心率 (e)0.38 ± 0.09
近心点 历元 (T)2449879 ± 38
近心点幅角 (ω)
(secondary)
293 ± 9°
其他命名
Mimosa,[8] Becrux,[9] β Crucis, HR 4853, CPD−59°4451, HD 111123, FK5 481, SAO 240259, HIP 62434
参考数据库
SIMBAD资料

十字架三(英语:Mimosa/mɪˈmsə/[8]β Cru / 南十字座β),是南十字座第二亮星,仅次于十字架二(南十字α);也是夜空第20亮星。它也是著名星群,称为南十字星的成员之一,但位于赤纬-60度的天空,所以只有在北回归线以南的地方才可以看到它。它距离地球约有280光年,是一颗联星,也可能是三合星系统。

名称

[编辑]

参考资料

[编辑]
  1. ^ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, S2CID 18759600, arXiv:0708.1752可免费查阅, doi:10.1051/0004-6361:20078357 
  2. ^ 2.0 2.1 2.2 Johnson, H. L.; et al, UBVRIJKL photometry of the bright stars, Communications of the Lunar and Planetary Laboratory, 1966, 4 (99): 99, Bibcode:1966CoLPL...4...99J 
  3. ^ Samus, N. N.; Durlevich, O. V.; et al. VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007–2013). VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 2009, 1: 02025. Bibcode:2009yCat....102025S. 
  4. ^ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 Cohen, David H.; et al, Chandra spectroscopy of the hot star βCrucis and the discovery of a pre-main-sequence companion, Monthly Notices of the Royal Astronomical Society, June 2008, 386 (4): 1855–1871, Bibcode:2008MNRAS.386.1855C, S2CID 2924933, arXiv:0802.4084可免费查阅, doi:10.1111/j.1365-2966.2008.13176.x 
  5. ^ 5.0 5.1 5.2 Aerts, C.; et al, Evidence for binarity and multiperiodicity in the beta Cephei star beta Crucis, Astronomy and Astrophysics, January 1998, 329: 137–146, Bibcode:1998A&A...329..137A 
  6. ^ Evans, D. S. Determination of Radial Velocities and their Applications. Batten, Alan Henry; Heard, John Frederick (编). Proceedings from IAU Symposium no. 30 30. University of Toronto: International Astronomical Union: 57. June 20–24, 1966. Bibcode:1967IAUS...30...57E.  |contribution=被忽略 (帮助)
  7. ^ Kilian, J., Chemical abundances in early B-type stars. 5: Metal abundances and LTE/NLTE comparison, Astronomy and Astrophysics, February 1994, 282 (3): 867–873, Bibcode:1994A&A...282..867K 
  8. ^ 8.0 8.1 IAU Catalog of Star Names. [2016-07-28]. (原始内容存档于2018-07-07). 
  9. ^ Hoffleit, Dorrit; Jaschek, Carlos. The Bright star catalogue. New Haven. 1991. Bibcode:1991bsc..book.....H. 

外部链接

[编辑]
{{bottomLinkPreText}} {{bottomLinkText}}
十字架三
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?