常陳一

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常陳一(獵犬座α)
Diagram showing star positions and boundaries of the Auriga constellation and its surroundings
Cercle rouge 100%.svg

常陳一的位置(以紅圈標示)
观测数据
曆元 J2000.0      分點 J2000.0 (ICRS)
星座 獵犬座
α2 CVn
赤經 12h 56m 01.66622s[1]
赤緯 +38° 19′ 06.1541″[1]
視星等 (V) 2.84 to 2.98[2]
α1 CVn
赤經 12h 56m 00.43258s[1]
赤緯 +38° 18′ 53.3768″[1]
視星等 (V) 5.60[3]
特性
光谱分类 A0pSiEuHg[4]
U−B 色指数 -0.32[5]
B−V 色指数 -0.12[5]
变星类型 α2 CVn
天体测定
α2 CVn
径向速度 (Rv) -4.10 ± 0.2[6] km/s
自行 (μ) 赤经:−235.08[1] mas/yr
赤纬:53.54[1] mas/yr
视差 (π) 28.41 ± 0.90[1] mas
距离 115 ± 4 ly
(35 ± 1 pc)
绝对星等 (MV) 0.16 ± 0.08[7]
α1 CVn
径向速度 (Rv) -0.60 ± 0.9[8] km/s
自行 (μ) 赤经:−232.86[1] mas/yr
赤纬:55.69[1] mas/yr
视差 (π) 27.10 ± 9.54[1] mas
距离 120 ± 4 ly
(大约40 pc)
詳細資料
α2 CVn
質量 2.97 ± 0.07[7] M
半徑 2.49 ± 0.26[7] R
表面重力 (log g) 3.9 ± 0.1[7]
亮度 101 ± 12[7] L
溫度 11600 ± 500[7] K
自轉 5.46939 d[7]
自轉速度 (v sin i) 18.4 ± 0.5[7] km/s
年齡 165+60
−70
[7] Myr
α1 CVn
質量 1.47 ± 0.15[9] M
半徑 1.5[9] R
表面重力 (log g) 4.25 ± 0.22[9]
溫度 7080[9] K
自轉速度 (v sin i) 18[10] km/s
其他命名
α CVn, 12 CVn, BD+39° 2580, ADS 8706 AB, CCDM J12560+3819B[11]
參考資料庫
SIMBAD data


常陳一α CVn / 獵犬座α)英文名Cor Caroli,是獵犬座最明亮的恆星,距離地球110光年。Cor Caroli意為查理一世之星,這個名稱非常有可能是愛德蒙·哈雷為了紀念查理一世而得名的。常陳一是一個雙星系統。常陳一與牧夫座大角星室女座角宿一獅子座五帝座一構成春天大鑽石

外部連結[编辑]

  1. ^ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 van Leeuwen, F.; 等. Validation of the new Hipparcos reduction. Astronomy and Astrophysics. 2007, 474 (2): 653–664. Bibcode:2007A&A...474..653V. arXiv:0708.1752. doi:10.1051/0004-6361:20078357. 
  2. ^ alf 2 CVn, database entry, The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars, Sternberg Astronomical Institute, Moscow, Russia. Accessed on line November 2, 2009.
  3. ^ Ducati, J. R. VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system. CDS/ADC Collection of Electronic Catalogues. 2002, 2237. Bibcode:2002yCat.2237....0D. 
  4. ^ HR 4915, 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 November 2, 2009.
  5. ^ 5.0 5.1 Mermilliod, J.-C. Compilation of Eggen's UBV data, transformed to UBV (unpublished). Catalogue of Eggen's UBV data. 1986. Bibcode:1986EgUBV........0M. 
  6. ^ Gontcharov, G. A. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system. Astronomy Letters. 2006, 32 (11): 759–771. Bibcode:2006AstL...32..759G. arXiv:1606.08053. doi:10.1134/S1063773706110065. 
  7. ^ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 Kochukhov, O.; Wade, G. A. Magnetic Doppler imaging of α2 Canum Venaticorum in all four Stokes parameters. Astronomy and Astrophysics. 2010, 513: A13. Bibcode:2010A&A...513A..13K. arXiv:1002.0025. doi:10.1051/0004-6361/200913860. 
  8. ^ Holmberg, J.; Nordström, B.; Andersen, J. The Geneva-Copenhagen survey of the Solar neighbourhood II. Astronomy and Astrophysics. 2007, 475 (2): 519. Bibcode:2007A&A...475..519H. arXiv:0707.1891. doi:10.1051/0004-6361:20077221. 
  9. ^ 9.0 9.1 9.2 9.3 Allende Prieto, C.; Lambert, D. L. Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures. Astronomy and Astrophysics. 1999, 352: 555–562. Bibcode:1999A&A...352..555A. arXiv:astro-ph/9911002. 
  10. ^ Royer, F.; Zorec, J.; Gómez, A. E. Rotational velocities of A-type stars. Astronomy and Astrophysics. 2007, 463 (2): 671. Bibcode:2007A&A...463..671R. arXiv:astro-ph/0610785. doi:10.1051/0004-6361:20065224. 
  11. ^ 引用错误:没有为名为Simbad2的参考文献提供内容