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危宿一：修订间差异

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{{reflist|2|refs=
{{reflist|2|refs=


<ref name=aaa474_2_653>{{citation | first=F. | last=van Leeuwen | year=2007 | month=November | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 }}</ref>
<ref name=aaa474_2_653>{{citation | first=F. | last=van Leeuwen | title=Validation of the new Hipparcos reduction | journal=Astronomy and Astrophysics | volume=474 | issue=2 | pages=653–664 | bibcode=2007A&A...474..653V | doi=10.1051/0004-6361:20078357 |date=November 2007}}</ref>


<ref name=mnras402_2_1369>{{citation | display-authors=1 | last1=Lyubimkov | first1=Leonid S. | last2=Lambert | first2=David L. | last3=Rostopchin | first3=Sergey I. | last4=Rachkovskaya | first4=Tamara M. | last5=Poklad | first5=Dmitry B. | title=Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood | journal=Monthly Notices of the Royal Astronomical Society | volume=402 | issue=2 | pages=1369–1379 | month=February | year=2010 | doi=10.1111/j.1365-2966.2009.15979.x | bibcode=2010MNRAS.402.1369L }}</ref>
<ref name=mnras402_2_1369>{{citation | display-authors=1 | last1=Lyubimkov | first1=Leonid S. | last2=Lambert | first2=David L. | last3=Rostopchin | first3=Sergey I. | last4=Rachkovskaya | first4=Tamara M. | last5=Poklad | first5=Dmitry B. | title=Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood | journal=Monthly Notices of the Royal Astronomical Society | volume=402 | issue=2 | pages=1369–1379 | doi=10.1111/j.1365-2966.2009.15979.x | bibcode=2010MNRAS.402.1369L |date=February 2010}}</ref>


<ref name=aj118_6_3032>{{citation | display-authors=1 | last1=Nordgren | first1=Tyler E. | last2=Germain | first2=M. E. | last3=Benson | first3=J. A. | last4=Mozurkewich | first4=D. | last5=Sudol | first5=J. J. | last6=Elias | first6=N. M., II | last7=Hajian | first7=Arsen R. | last8=White | first8=N. M. | last9=Hutter | first9=D. J. | title=Stellar Angular Diameters of Late-Type Giants and Supergiants Measured with the Navy Prototype Optical Interferometer | journal=The Astronomical Journal | volume=118 | issue=6 | pages=3032-3038 | month=December | year=1999 | doi=10.1086/301114 | bibcode=1999AJ....118.3032N }}</ref>
<ref name=aj118_6_3032>{{citation | display-authors=1 | last1=Nordgren | first1=Tyler E. | last2=Germain | first2=M. E. | last3=Benson | first3=J. A. | last4=Mozurkewich | first4=D. | last5=Sudol | first5=J. J. | last6=Elias | first6=N. M., II | last7=Hajian | first7=Arsen R. | last8=White | first8=N. M. | last9=Hutter | first9=D. J. | title=Stellar Angular Diameters of Late-Type Giants and Supergiants Measured with the Navy Prototype Optical Interferometer | journal=The Astronomical Journal | volume=118 | issue=6 | pages=3032-3038 | doi=10.1086/301114 | bibcode=1999AJ....118.3032N |date=December 1999}}</ref>


<ref name=scfs>{{citation | display-authors=1 | title=Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions | last1=Wielen | first1=R. | last2=Schwan | first2=H. | last3=Dettbarn | first3=C. | last4=Lenhardt | first4=H. | last5=Jahreiß | first5=H. | last6=Jährling | first6=R. | publisher=Astronomisches Rechen-Institut Heidelberg | issue=35 | year=1999 | bibcode=1999VeARI..35....1W }}</ref>
<ref name=scfs>{{citation | display-authors=1 | title=Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions | last1=Wielen | first1=R. | last2=Schwan | first2=H. | last3=Dettbarn | first3=C. | last4=Lenhardt | first4=H. | last5=Jahreiß | first5=H. | last6=Jährling | first6=R. | publisher=Astronomisches Rechen-Institut Heidelberg | issue=35 | year=1999 | bibcode=1999VeARI..35....1W }}</ref>
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<ref name=aaa480_1_91>{{cite journal | display-authors=1 | last1=Soubiran | first1=C. | last2=Bienaymé | first2=O. | last3=Mishenina | first3=T. V. | last4=Kovtyukh | first4=V. V. | title=Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants | journal=Astronomy and Astrophysics | year=2008 | volume=480 | issue=1 | pages=91–101 | bibcode=2008A&A...480...91S | doi=10.1051/0004-6361:20078788 }}</ref>
<ref name=aaa480_1_91>{{cite journal | display-authors=1 | last1=Soubiran | first1=C. | last2=Bienaymé | first2=O. | last3=Mishenina | first3=T. V. | last4=Kovtyukh | first4=V. V. | title=Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants | journal=Astronomy and Astrophysics | year=2008 | volume=480 | issue=1 | pages=91–101 | bibcode=2008A&A...480...91S | doi=10.1051/0004-6361:20078788 }}</ref>


<ref name=apj627_1_L53>{{citation | last1=Ayres | first1=Thomas R. | last2=Brown | first2=Alexander | last3=Harper | first3=Graham M. | title=Chandra Observations of Coronal Emission from the Early G Supergiants α and β Aquarii | journal=The Astrophysical Journal | volume=627 | issue=1 | pages=L53–L56 | month=July | year=2005 | doi=10.1086/431977 | bibcode=2005ApJ...627L..53A }}</ref>
<ref name=apj627_1_L53>{{citation | last1=Ayres | first1=Thomas R. | last2=Brown | first2=Alexander | last3=Harper | first3=Graham M. | title=Chandra Observations of Coronal Emission from the Early G Supergiants α and β Aquarii | journal=The Astrophysical Journal | volume=627 | issue=1 | pages=L53–L56 | doi=10.1086/431977 | bibcode=2005ApJ...627L..53A |date=July 2005}}</ref>


}}
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2016年2月1日 (一) 00:07的版本

危宿一（宝瓶座α）
α Aquarii
Diagram showing star positions and boundaries of the Aquarius constellation and its surroundings
危宿一在宝瓶座的位置
觀測資料
曆元 J2000.0
星座 宝瓶座
星官 危宿 危
赤經 22h 05m 47.03593s[1]
赤緯 −00° 19′ 11.4568″[1]
視星等（V） 2.942[2]
特性
光谱分类G2 Ib[3]
U−B 色指数+0.699[2]
B−V 色指数+0.971[2]
R−I 色指数+0.49[4]
天体测定
徑向速度 (Rv)7.5[5] km/s
自行 (μ) 赤经：+18.25[1] mas/yr
赤纬：−9.39[1] mas/yr
视差 (π)6.23 ± 0.19[1] mas
距离520 ± 20 ly
(161 ± 5 pc)
绝对星等 (MV)–3.882[6]
詳細資料
質量6.5 ± 0.3[3] M☉
半徑77 ± 15[7] R☉
表面重力 (log g)1.76 ± 0.04[3]
亮度4400[8] L☉
溫度5,400 ± 100[3] K
自轉速度 (v sin i)6.7 ± 1.5[9] km/s
年齡53[3] Myr
其他命名
El Melik, Rucbah, Saad el Melik, Sadalmelek, Sadalmelik, Sadlamulk, α Aqr, Alpha Aquarii, Alpha Aqr, 34 Aquarii, 34 Aqr, BD−01 4246, FK5 827, HD 209750, HIP 109074, HR 8414, SAO 145862.[10][4][11][12]
參考資料庫
SIMBAD资料

危宿一，即宝瓶座α（α Aqr，α Aquarii）是一颗位于宝瓶座的超巨星，距离地球约520光年。

特征

危宿一的视星等为2.94，是宝瓶座第二亮的恒星[2]，仅次于虚宿一（宝瓶座β）。根据依巴谷卫星对恒星视差的测量，危宿一距离地球大约为520光年（160秒差距）。[1]

危宿一的年龄约为5300万年，已经演变成一颗超巨星，恒星光谱是G2 Ib型。[3] 恒星的质量是太阳质量的6.5倍[3]，半径是太阳半径的77倍[7]，亮度是太阳亮度的4400倍。[8] 危宿一的表面有效温度约为5400K，这使得它的呈现出G型星特征的黄色色调。[13] 钱德拉X射线天文台对危宿一的观测发现它和G-型主序星相比，辐射出的X射线显著匮乏，这也是早期G型巨星的共同特征。[9] 危宿一和虚宿一（宝瓶座β）、离宫四（飞马座η）三颗中等质量的恒星组成一个恒星群落，它们在星际运动的方向垂直于银河面。[9]

危宿一有一颗伴星CCDM J22058-0019B，可以通过望远镜看到，其视星等约为12.2，距离主星的角距离为110.4角秒，目前的位置角位于主星的40°方位。[11]

命名

危宿一在西方的传统名字为Sadalmelik, 来自于阿拉伯语سعد الملك（sa‘d al-malik）， 意思为“帝皇的幸运星”。波斯帖木儿帝国国王、天文学家乌鲁伯格将危宿一和蓋屋一（宝瓶座ο）并称为Sadalmelik。此外，危宿一还与阁道三（仙后座δ）共用一个名字Rucbah，在阿拉伯语是“膝盖”的意思。[12] 它是在天球赤道附近（1°之内）两颗拥有古代固有名的恒星之一，但是这两个名字的起源历史已不可考究。[8]

在中国古代星官系统中，危宿一属于北方玄武七宿中危宿危 (星官)第一星，这也是危宿一名字的来由。[14]“危”意思是屋顶，危星官由三颗恒星组成，另外两颗恒星分别是危宿二（飞马座θ）和危宿三（飞马座ε）。[15]

参考资料

  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, doi:10.1051/0004-6361:20078357 
  2. ^ 2.0 2.1 2.2 2.3 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 3.4 3.5 3.6 Lyubimkov, Leonid S.; et al, Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood, Monthly Notices of the Royal Astronomical Society, February 2010, 402 (2): 1369–1379, Bibcode:2010MNRAS.402.1369L, doi:10.1111/j.1365-2966.2009.15979.x 
  4. ^ 4.0 4.1 HR 8414, database entry, The Bright Star Catalogue, 5th Revised Ed. (Preliminary Version), D. Hoffleit and W. H. Warren, Jr., CDS ID V/50. Accessed on line October 3, 2008.
  5. ^ Wielen, R.; et al, Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions (35), Astronomisches Rechen-Institut Heidelberg, 1999, Bibcode:1999VeARI..35....1W 
  6. ^ Soubiran, C.; et al. Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants. Astronomy and Astrophysics. 2008, 480 (1): 91–101. Bibcode:2008A&A...480...91S. doi:10.1051/0004-6361:20078788. 
  7. ^ 7.0 7.1 Nordgren, Tyler E.; et al, Stellar Angular Diameters of Late-Type Giants and Supergiants Measured with the Navy Prototype Optical Interferometer, The Astronomical Journal, December 1999, 118 (6): 3032–3038, Bibcode:1999AJ....118.3032N, doi:10.1086/301114 
  8. ^ 8.0 8.1 8.2 Sadalmelik, Stars, Jim Kaler. Accessed on line October 3, 2008.
  9. ^ 9.0 9.1 9.2 Ayres, Thomas R.; Brown, Alexander; Harper, Graham M., Chandra Observations of Coronal Emission from the Early G Supergiants α and β Aquarii, The Astrophysical Journal, July 2005, 627 (1): L53–L56, Bibcode:2005ApJ...627L..53A, doi:10.1086/431977 
  10. ^ NAME SADALMELIK -- Star in double system, database entry, SIMBAD. Accessed on line October 3, 2008.
  11. ^ 11.0 11.1 Entry 22058-0019, The Washington Double Star Catalog, United States Naval Observatory. Accessed on line November 18, 2008.
  12. ^ 12.0 12.1 pp. 51, 148, Star-names and Their Meanings, Richard Hinckley Allen, New York: G. E. Stechert, 1899.
  13. ^ The Colour of Stars, Australia Telescope, Outreach and Education (Commonwealth Scientific and Industrial Research Organisation), December 21, 2004 [2012-01-16] 
  14. ^ 香港太空館 - 研究資源 - 亮星中英對照表
  15. ^ 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.

外部链接

恒星
B
F
變星
HR
HD
格利泽
其他
星团
球状
星云
行星状
星系
NGC
其他
星系团
其他
星官危包括的恒星
正星
增星
检索自“https://zh.wikipedia.org/w/index.php?title=危宿一&oldid=38925512”