武仙座AM





Disambig gray.svg  本文描述武仙座的激變變星：武仙座AM。武仙座AM型激變變星請參考高偏振星


















































武仙座AM
觀測資料
曆元 J2000.0

星座
武仙座

星官

赤經
 18h 16m 13.33s[1]

赤緯
 +49° 52′ 04.2″[1]

視星等（V）
 12.30-15.7[2]
特性
光谱分类 M4.5[1]
变星类型 AM/XRM+E[2]
天体测定
径向速度 (Rv) -12[1] km/s

其他命名

AN 1923.0028, GSC 3533.01105, X 18149+498[2]

參考資料庫

SIMBAD
data

武仙座AM 是位於武仙座的一顆紅矮星變星。這顆恆星與大熊座AN，是被稱為高偏振星的激變變星，或武仙座AM型變星的原型。




目录






  • 1 歷史


  • 2 相關條目


  • 3 參考資料


  • 4 外部連結





歷史


武仙座AM位於武仙座，於1923年被德國海德堡的天文學家馬克斯·沃夫發現，隨即登錄在Veränderlicher 28.1923，現今的 AN 28.1923，和變星總表內。它是一顆不規則變星，視星等在12至14等之間變化[3]。在1976年，天文學家S. Tapia發現他的光線不僅是線性偏極還有圓偏極，顯示這顆恆星有強烈的磁場環繞在週圍，顯示這個系統比早先認為的還要複雜[4][5][6]。







相關條目



  • 高偏振星

  • 變星

  • 大熊座AN



參考資料





  1. ^ 1.01.11.21.3 V* AM Her -- Cataclysmic Var. AM Her type. SIMBAD. Centre de Données astronomiques de Strasbourg. [2009-12-16]. 


  2. ^ 2.02.12.2 Query= AM Her. General Catalogue of Variable Stars. Centre de Données astronomiques de Strasbourg. [2009-12-16]. 


  3. ^ S. Seliwanow. Mitteilungen über Veränderliche - Veränderlicher 28.1923 Herculis - M. Wolf - December 1923. Astronomische Nachrichten. 1923, 220 (15): 255. Bibcode:1924AN....220..249H. doi:10.1002/asna.19232201505 （德语）. 


  4. ^ Tapia, S. Discovery of a magnetic compact star in the AM Herculis/3U 1809+50 system. The Astrophysical Journal Letters. March 15, 1977, 212: L125–L129. Bibcode:1977ApJ...212L.125T. doi:10.1086/182390. 


  5. ^ Hessman, F.V., Gansicke, B.T., and Mattei, J.A. The history and source of mass-transfer variations in AM Herculis. Astronomy & Astrophysics. September 2000, 361: 952–958. Bibcode:2000A&A...361..952H. 


  6. ^ Krzeminski, W. and Serkowski, K. Extremely high circular polarization of AN Ursae Majoris. The Astrophysical Journal Letters. August 1977, 216: L45. Bibcode:1977ApJ...216L..45K. doi:10.1086/182506. 




  • Hellier, C. Cataclysmic Variable Stars: How and Why They Vary, Springer, Praxis Publishing Ltd, Chichester, UK, 2001.

  • Hoffmeister, C., Richter, G., and Wenzel, W., Variable Stars, Springer-Verlag, Berlin, 1985.

  • Liller, W. "The Story of AM Herculis", Sky and Telescope, 53, 351-354, 1977.



外部連結



  • 美国变星观测者协会（AAVSO）的每月變星



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