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羽林軍一

羽林軍一(寶瓶座29)
觀測資料
曆元 J2000
星座 寶瓶座
星官 羽林軍室宿
赤經 22h 02m 26.24906s[1]
赤緯 -16° 57′ 53.4077″[1]
視星等(V) 6.37
特性
光谱分类A2 V + K0 III[2]
B−V 色指数0.42
天体测定
徑向速度 (Rv)15 km/s
自行 (μ) 赤经:+6.26[1] mas/yr
赤纬:–0.51[1] mas/yr
视差 (π)3.70 ± 1.99[1] mas
距离approx. 900 ly
(approx. 300 pc)
其他命名
BD−17° 6422, HD 209278, HIP 108797, HR 8396, SAO 164830.[3]
參考資料庫
SIMBAD资料

羽林軍一寶瓶座2929 Aquarii )是在天球赤道上的星座寶瓶座的一對聯星29 Aquarii佛氏命名法賦予的名稱;它還是一顆變星,依變星命名法稱為寶瓶座DX。這兩顆恆星的軌道平面接近視線的方向,因而形成大陵五型變星。系統中的主星是一顆A型主序星類型為A2V;它的伴星是顆巨星,類型為 K0III。兩者互繞的軌道週期為0.94501日[2]

這對聯星的變異是在1965年首度被德國班貝格Remeis-Observatory英语Remeis-Observatory的W. Strohmeier注意到[4]。稍後,他發現變異是因為聯星中的主星被伴星遮蔽造成的[5]

參考資料

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  1. ^ 1.0 1.1 1.2 1.3 1.4 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可免费查阅, doi:10.1051/0004-6361:20078357. 
  2. ^ 2.0 2.1 Zasche, P.; et al, A Catalog of Visual Double and Multiple Stars With Eclipsing Components, The Astronomical Journal, August 2009, 138 (2): 664–679, Bibcode:2009AJ....138..664Z, arXiv:0907.5172可免费查阅, doi:10.1088/0004-6256/138/2/664. 
  3. ^ BD-17 6422 -- Spectroscopic binary, SIMBAD Astronomical Object Database (Centre de Données astronomiques de Strasbourg), [2012-07-16], (原始内容存档于2020-09-14). 
  4. ^ Strohmeier, W.; et al. Bright Southern BV-Stars. Information Bulletin On Variable Stars. 1965, 81. Bibcode:1965IBVS...81....1S. 
  5. ^ Strohmeier, W. BV 449 and BV 600, Two Bright EB-Stars. Information Bulletin On Variable Stars. 1966, 164 [2018-09-25]. Bibcode:1966IBVS..164....1S. (原始内容存档于2013-08-18). 

外部連結

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羽林軍一
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