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圆规座γγ Cir)是位於圓規座的恒星系统,视星等4.51[2],距地球450光年。赫歇尔于1835年发现这是一对联星,并估算两颗子星的角距离为1弧秒[10]

γ Circini
Circinus IAU.svg
Red circle.svg



圆规座γ在天球上的位置(红圈内)
觀測資料
曆元 J2000.0
星座 圆规座
星官
赤經 15h 23m 22.64294s[1]
赤緯 −59° 19′ 14.8131″[1]
視星等(V) 4.51[2] (4.94 + 5.73)[3]
特性
光谱分类B5 IV[4] + F8 V[2]
变星类型Be[5]
天体测定
徑向速度 (Rv)16.90±1.78[6] km/s
自行 (μ) 赤经:−12.97[1] mas/yr
赤纬:−34.24[1] mas/yr
视差 (π)7.27 ± 0.81[1] mas
距离大约450 ly
(大约140 pc)
绝对星等 (MV)−2.3/−2.6
軌道[4]
绕行周期 (P)258 yr
半长轴 (a)2.576"
偏心率 (e)0.931
詳細資料
γ Cir A
質量6.0±0.3[7] M
溫度15,135[8] K
年齡63.1±19.6[7] Myr
γ Cir B
溫度4,786[8] K
其他命名
γ Cir, HIP 75323, HR 5704, SAO 242463.[9]


参考资料编辑

  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 Buscombe, W.; Barkstrom, B., The composite spectrum of gamma Circini, Monthly Notices of the Royal Astronomical Society, 1971, 152: 37−45, Bibcode:1971MNRAS.152...37B, doi:10.1093/mnras/152.1.37. 
  3. ^ Mason, B. D.; 等, The Washington Visual Double Star Catalog, 2014 [2015-07-22], Bibcode:2001AJ....122.3466M, doi:10.1086/323920 
  4. ^ 4.0 4.1 Malkov, O. Yu.; 等, Dynamical masses of a selected sample of orbital binaries, Astronomy & Astrophysics, 2012, 546: A69, Bibcode:2012A&A...546A..69M, doi:10.1051/0004-6361/201219774. 
  5. ^ Kazarovets, E. V.; 等. The 74th Special Name-list of Variable Stars. Information Bulletin on Variable Stars. 1999, 4659: 1. Bibcode:1999IBVS.4659....1K. 
  6. ^ de Bruijne, J. H. J.; Eilers, A.-C., Radial velocities for the HIPPARCOS-Gaia Hundred-Thousand-Proper-Motion project, Astronomy & Astrophysics, October 2012, 546: 14, Bibcode:2012A&A...546A..61D, arXiv:1208.3048, doi:10.1051/0004-6361/201219219, A61. 
  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 Parsons, Sidney B., New and Confirmed Triple Systems with Luminous Cool Primaries and Hot Companions, The Astronomical Journal, May 2004, 127 (5): 2915−2930, Bibcode:2004AJ....127.2915P, doi:10.1086/383546. 
  9. ^ gam Cir -- Double or multiple star, SIMBAD Astronomical Database (Centre de Données astronomiques de Strasbourg), [2017-01-13]. 
  10. ^ Carette, E.; 等, γ Circinus: a young visual binary with pre-main-sequence component(s)?, Astronomy and Astrophysics, April 1995, 296: 139, Bibcode:1995A&A...296..139C. 

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