参旗八

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参旗八
Orion constellation map.svg
Map pointer.svg

参旗八的位置(红圈处)
觀測資料
曆元 J2000.0
星座 猎户座
星官
赤經 04h 54m 15.09604s[1]
赤緯 +02° 26′ 26.4231″[1]
視星等(V) 3.69[2]
特性
光谱分类B2 III[3]
U−B 色指数−0.81[2]
B−V 色指数−0.18[2]
变星类型旋转椭球变星[4]
天体测定
徑向速度 (Rv)+23.4[5] km/s
自行 (μ) 赤经:+0.55[1] mas/yr
赤纬:+0.61[1] mas/yr
视差 (π)2.43 ± 0.39[1] mas
距离大约1300 ly
(大约410 pc)
軌道[6]
绕行周期 (P)3.7005 d
偏心率 (e)0.0000
近心点 历元 (T)2417921.64±0.01 JD
半振幅 (K1)
(primary)
57.88±1.07 km/s
詳細資料
π5 Ori A
質量12.5±0.6[7] M
表面重力 (log g)3.51[8]
亮度11,262[9] L
溫度14,496[9] K
金属量 [Fe/H]−0.28[8] dex
自轉速度 (v sin i)90[10] km/s
年齡15.8±0.2[7] Myr
其他命名
π5 Ori, 8 Orionis, BD+02° 810, HD 31237, HIP 22797, HR 1567, SAO 112197.[11]
參考資料庫
SIMBADdata

参旗八猎户座π5)是位于猎户座双星系统,其视星等为3.69[2]

参考文献[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, 2007, 474 (2): 653–664, Bibcode:2007A&A...474..653V, arXiv:0708.1752, doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 2.2 2.3 Crawford, D. L.; 等, Four-color, H-beta, and UBV photometry for bright B-type stars in the northern hemisphere, The Astronomical Journal, 1971, 76: 1058, Bibcode:1971AJ.....76.1058C, doi:10.1086/111220. 
  3. ^ Chini, R.; 等, A spectroscopic survey on the multiplicity of high-mass stars, Monthly Notices of the Royal Astronomical Society, 2012, 424 (3): 1925, Bibcode:2012MNRAS.424.1925C, arXiv:1205.5238, doi:10.1111/j.1365-2966.2012.21317.x. 
  4. ^ Morris, S. L., The ellipsoidal variable stars, Astrophysical Journal, Part 1, August 1985, 295: 143−152, Bibcode:1985ApJ...295..143M, doi:10.1086/163359. 
  5. ^ Evans, D. S., The Revision of the General Catalogue of Radial Velocities, (编) Batten, Alan Henry; Heard, John Frederick, Determination of Radial Velocities and their Applications, Proceedings from IAU Symposium no. 30, University of Toronto: International Astronomical Union, June 20–24, 1966, Bibcode:1967IAUS...30...57E. 
  6. ^ Pourbaix, D.; 等, SB9: The ninth catalogue of spectroscopic binary orbits, Astronomy & Astrophysics, 2004, 424 (2): 727, Bibcode:2004A&A...424..727P, arXiv:astro-ph/0406573, doi:10.1051/0004-6361:20041213. 
  7. ^ 7.0 7.1 Tetzlaff, N.; 等, A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun, Monthly Notices of the Royal Astronomical Society, January 2011, 410 (1): 190–200, Bibcode:2011MNRAS.410..190T, arXiv:1007.4883, doi:10.1111/j.1365-2966.2010.17434.x. 
  8. ^ 8.0 8.1 Soubiran, C.; 等, The PASTEL catalogue of stellar parameters, Astronomy and Astrophysics, June 2010, 515: A111, Bibcode:2010A&A...515A.111S, arXiv:1004.1069, doi:10.1051/0004-6361/201014247. 
  9. ^ 9.0 9.1 McDonald, I.; 等, Fundamental Parameters and Infrared Excesses of Hipparcos Stars, Monthly Notices of the Royal Astronomical Society, 2012, 427 (1): 343–57, Bibcode:2012MNRAS.427..343M, arXiv:1208.2037, doi:10.1111/j.1365-2966.2012.21873.x. 
  10. ^ Abt, Helmut A.; Boonyarak, Chayan, Tidal Effects in Binaries of Various Periods, The Astrophysical Journal, November 2004, 616 (1): 562−566, Bibcode:2004ApJ...616..562A, doi:10.1086/423795. 
  11. ^ pi.05 Ori -- Spectroscopic binary, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2016-11-18]. 

外部链接[编辑]

  • Kaler, James B., Pi-5 Orionis, Stars (University of Illinois), February 6, 2009 [2016-11-22].