跳转到内容

玉井三

维基百科,自由的百科全书
(重定向自波江座β
波江座β
Diagram showing star positions and boundaries of the Eridanus constellation and its surroundings
波江座β的位置 (圓圈)
觀測資料
曆元 J2000.0
星座 波江座
星官 玉井 (參宿)
赤經 05h 07m 50.98549s[1]
赤緯 −05° 05′ 11.2055″[1]
視星等(V) 2.796[2]
特性
光谱分类A3 III var[3]
U−B 色指数+0.124[2]
B−V 色指数+0.110[2]
R−I 色指数+0.08[4]
天体测定
徑向速度 (Rv)–3.6[5] km/s
自行 (μ) 赤经:-82.82[1] mas/yr
赤纬:-75.39[1] mas/yr
视差 (π)36.50 ± 0.42[1] mas
距离89 ± 1 ly
(27.4 ± 0.3 pc)
詳細資料
質量2.6[6] M
半徑3.55[6] R
表面重力 (log g)3.58[5]
亮度52[6] L
溫度8,104[5] K
金属量 [Fe/H]–0.4[7] dex
自轉速度 (v sin i)196[3] km/s
其他命名
Cursa, Dhalim,[8] Kursa,[9] β Eri, Beta Eridani, Beta Eri, 67 Eridani, 67 Eri, BD−05 1162, CCDM J05079-0506A, FK5 188, GC 6274, GJ 9175, HD 33111, HIP 23875, HR 1666, IDS 05030-0513 A, PPM 187729, SAO 131794, WDS 05078-0505A.[10]
參考資料庫
SIMBAD资料

玉井三 (波江座β) 是波江座的第二亮星,位於這個星座東北方的邊界,靠近獵戶座之處。它的固有名稱是Cursa[4][11]視星等2.796[2],所以用肉眼就可以直接看見。視差測量出這顆恆星與地球的距離大約是89光年(27秒差距[1]

性質

[编辑]

玉井三 (波江座β)的光譜類型是A3 III [3],其中的III指出在光度分類中是已經耗盡核心的氫,離開主序帶巨星。 外層的有效溫度大約是8,104K[5],因此是顆白色色調的A型恆星[12]。這顆投影自轉速度高達196 km s–1[3],相較於太陽赤道2 km s–1,是非常的快速[13]。這顆恆星的視星等在2.72-2.80[14] 據報尤其於1985年曾有強勁爆發[11][15]

這顆星的位置和移動軌跡顯示它是大熊座星群的成員,一個恆星的集團,它們在空間中有著共同的來源和移動方向。但是,它在光度測量上的屬性顯示他可能只是個闖入者[5]。玉井三有一顆視星等10.90等的光學伴星角距離為120弧秒方位角 148°[16],在CCDMJ目錄上的編號為 CCDM J05079-0506B.[17]

語源

[编辑]

Cursa衍生於Al Kursiyy al Jauzah,意思是"中央的椅子 (或"腳凳") "。這個名稱之下的恆星組合還包括玉井一玉井二玉井四[8]

中國,這顆恆星稱為玉井三,也就是星官玉井的第三顆星。這個小星群還包括玉井一 (波江座λ)、玉井四 (獵戶座τ)和玉井二 (波江座ψ)[18]。當然,玉井三 (波江座β)也包含在內[8][19]。 依據恆星目錄的技術備忘錄33-507 – 一份包含537顆恆星的精簡目錄,Al Kursiyy al Jauzah含有三顆的標題:波江座β是Cursa波江座ψAl Kursiyy al Jauzah I波江座λAl Kursiyy al Jauzah II (排除了獵戶座τ)[20]

相關條目

[编辑]

参考文献

[编辑]
  1. ^ 1.0 1.1 1.2 1.3 1.4 1.5 van Leeuwen, F., Validation of the new Hipparcos reduction, Astronomy and Astrophysics, November 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752可免费查阅, doi:10.1051/0004-6361:20078357 
  2. ^ 2.0 2.1 2.2 2.3 Cousins, A. W. J., Standardization of Broadband Photometry of Equatorial Standards, South African Astronomical Observatory Circulars, 1984, 8: 59, Bibcode:1984SAAOC...8...59C 
  3. ^ 3.0 3.1 3.2 3.3 Royer, F.; et al, Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i, Astronomy and Astrophysics, October 2002, 393: 897–911, Bibcode:2002A&A...393..897R, arXiv:astro-ph/0205255可免费查阅, doi:10.1051/0004-6361:20020943 
  4. ^ 4.0 4.1 HR 1666页面存档备份,存于互联网档案馆), database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50页面存档备份,存于互联网档案馆). Accessed on line September 17, 2008.
  5. ^ 5.0 5.1 5.2 5.3 5.4 King, Jeremy R.; et al, Stellar Kinematic Groups. II. A Reexamination of the Membership, Activity, and Age of the Ursa Major Group, The Astronomical Journal, April 2003, 125 (4): 1980–2017, Bibcode:2003AJ....125.1980K, doi:10.1086/368241 
  6. ^ 6.0 6.1 6.2 Malagnini, M. L.; Morossi, C., Accurate absolute luminosities, effective temperatures, radii, masses and surface gravities for a selected sample of field stars, Astronomy and Astrophysics Supplement Series, November 1990, 85 (3): 1015–1019, Bibcode:1990A&AS...85.1015M 
  7. ^ Kamp, I.; Hempel, M.; Holweger, H., Do dusty A stars exhibit accretion signatures in their photospheres?, Astronomy and Astrophysics, June 2002, 388: 978–984, Bibcode:2002A&A...388..978K, arXiv:astro-ph/0204449可免费查阅, doi:10.1051/0004-6361:20020493 
  8. ^ 8.0 8.1 8.2 Allen, R. H., Star Names: Their Lore and Meaning Reprint, New York, NY: Dover Publications Inc: 218, 1963 [2010-12-12], ISBN 0-486-21079-0, (原始内容存档于2023-07-01) 
  9. ^ Moore, Patrick, The amateur astronomer, Patrick Moore's Practical Astronomy Series 12th, Birkhäuser: 200, 2006, ISBN 1-85233-878-4 
  10. ^ bet Eri -- Variable Star, SIMBAD (Centre de Données astronomiques de Strasbourg), [2012-01-10], (原始内容存档于2016-03-15) 
  11. ^ 11.0 11.1 Kaler, James B., Cursa (Beta Eridani), Stars (University of Illinois), [2012-01-10], (原始内容存档于2012-05-02) 
  12. ^ The Colour of Stars, Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004 [2012-01-16], (原始内容存档于2012-03-10) 
  13. ^ Unsöld, Albrecht; Baschek, B., The new cosmos: an introduction to astronomy and astrophysics 5th, Springer: 167, 2001, ISBN 3-540-67877-8 
  14. ^ NSV 1841, database entry, New Catalogue of Suspected Variable Stars, the improved version页面存档备份,存于互联网档案馆), Sternberg Astronomical Institute, Moscow, Russia. Accessed on line September 17, 2008.
  15. ^ Brunner, B. H., A Flare of Beta-Eridani, Sky and Telescope, June 1985, 69 (6): 484, Bibcode:1985S&T....69R.484B 
  16. ^ Mason, B. D.; Wycoff, G. L.; Hartkopf, W. I.; Douglass, G. G.; Worley, C. E., The Washington Visual Double Star Catalog (Mason+ 2001-2011), VizieR On-line Data Catalog: B/wds. Originally published in: 2001AJ....122.3466M, November 2011, Bibcode:2011yCat....102026M 
  17. ^ BD-05 1162B -- Star in double system, database entry, SIMBAD. Accessed on line September 17, 2008.
  18. ^ (中文) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7.
  19. ^ (中文) 香港太空館 - 研究資源 - 亮星中英對照表 互联网档案馆存檔,存档日期2009-09-29., Hong Kong Space Museum. Accessed on line November 23, 2010.
  20. ^ Jack W. Rhoads - Technical Memorandum 33-507-A Reduced Star Catalog Containing 537 Named Stars, Jet Propulsion Laboratory, California Institute of Technology; November 15, 1971 (PDF). [2012-12-30]. (原始内容存档 (PDF)于2013-10-29).