玉井三
观测资料 历元 J2000.0 | |
---|---|
星座 | 波江座 |
星官 | 玉井 (参宿) |
赤经 | 05h 07m 50.98549s[1] |
赤纬 | −05° 05′ 11.2055″[1] |
视星等(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 | |
径向速度 (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) |
详细资料 | |
质量 | 2.6[6] M☉ |
半径 | 3.55[6] R☉ |
表面重力 (log g) | 3.58[5] |
亮度 | 52[6] L☉ |
温度 | 8,104[5] K |
金属量 [Fe/H] | –0.4[7] dex |
自转速度 (v sin i) | 196[3] km/s |
其他命名 | |
参考数据库 | |
SIMBAD | 资料 |
玉井三 (波江座β) 是波江座的第二亮星,位于这个星座东北方的边界,靠近猎户座之处。它的固有名称是Cursa[4][11],视星等2.796[2],所以用肉眼就可以直接看见。视差测量出这颗恒星与地球的距离大约是89光年(27秒差距) [1]。
性质
[编辑]玉井三 (波江座β)的光谱类型是A3 III [3],其中的III指出在光度分类中是已经耗尽核心的氢,离开主序带的巨星。 外层的有效温度大约是8,104K[5],因此是颗白色色调的A型恒星[12]。这颗投影自转速度高达196 km s–1[3],相较于太阳赤道的2 km s–1,是非常的快速[13]。这颗恒星的视星等在2.72-2.80[14] 据报尤其于1985年曾有强劲爆发[11][15]。
这颗星的位置和移动轨迹显示它是大熊座星群的成员,一个恒星的集团,它们在空间中有着共同的来源和移动方向。但是,它在光度测量上的属性显示他可能只是个闯入者[5]。玉井三有一颗视星等10.90等的光学伴星,角距离为120弧秒,方位角 148°[16],在CCDMJ目录上的编号为 CCDM J05079-0506B.[17]。
语源
[编辑]Cursa衍生于Al Kursiyy al Jauzah,意思是"中央的椅子 (或"脚凳") "。这个名称之下的恒星组合还包括玉井一、玉井二和玉井四[8]。
在中国,这颗恒星称为玉井三,也就是星官玉井的第三颗星。这个小星群还包括玉井一 (波江座λ)、玉井四 (猎户座τ)和玉井二 (波江座ψ)[18]。当然,玉井三 (波江座β)也包含在内[8][19]。 依据恒星目录的技术备忘录33-507 – 一份包含537颗恒星的精简目录,Al Kursiyy al Jauzah含有三颗的标题:波江座β是Cursa,波江座ψ是Al Kursiyy al Jauzah I,波江座λ是Al Kursiyy al Jauzah II (排除了猎户座τ)[20]。
相关条目
[编辑]参考文献
[编辑]- ^ 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
, doi:10.1051/0004-6361:20078357
- ^ 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
- ^ 3.0 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
, doi:10.1051/0004-6361:20020943
- ^ 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.
- ^ 5.0 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
- ^ 6.0 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
- ^ 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
, doi:10.1051/0004-6361:20020493
- ^ 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)
- ^ Moore, Patrick, The amateur astronomer, Patrick Moore's Practical Astronomy Series 12th, Birkhäuser: 200, 2006, ISBN 1-85233-878-4
- ^ bet Eri -- Variable Star, SIMBAD (Centre de Données astronomiques de Strasbourg), [2012-01-10], (原始内容存档于2016-03-15)
- ^ 11.0 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)
- ^ 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)
- ^ Unsöld, Albrecht; Baschek, B., The new cosmos: an introduction to astronomy and astrophysics 5th, Springer: 167, 2001, ISBN 3-540-67877-8
- ^ 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.
- ^ Brunner, B. H., A Flare of Beta-Eridani, Sky and Telescope, June 1985, 69 (6): 484, Bibcode:1985S&T....69R.484B
- ^ 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
- ^ BD-05 1162B -- Star in double system, database entry, SIMBAD. Accessed on line September 17, 2008.
- ^ (中文) 中国星座神话, written by 陈久金. Published by 台湾书房出版有限公司, 2005, ISBN 978-986-7332-25-7.
- ^ (中文) 香港太空馆 - 研究资源 - 亮星中英对照表 互联网档案馆的存档,存档日期2009-09-29., Hong Kong Space Museum. Accessed on line November 23, 2010.
- ^ 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).
|