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AM Herculis
AM Herculis is a red dwarf variable star located in the constellation Hercules. This star, along with the star ''AN Ursae Majoris'', is the prototype for a category of cataclysmic variable stars called ''polars'', or ''AM Her'' type stars. ==History== ''AM Herculis'' and was first cataloged in 1923 by Max Wolf and was listed at the time as ''Veränderlicher 28.1923'', which is now ''AN 28.1923'' in the ''General Catalogue of Variable Stars''. It was observed to be an irregular variable star ranging from 12 to 14 in apparent magnitude. In 1976, the astronomer S. Tapia discovered that light from the star is both linearly and circularly polarized, showing that there was a strong magnetic field surrounding the system and revealing that the system was more complex than previously thought.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「AM Herculis」の詳細全文を読む
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