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DQ Herculis
DQ Herculis (or Nova Herculis 1934) was a slow, bright nova occurring in Hercules in December 1934. The nova was first observed on 13 Dec, 1934, reaching a peak brightness with an apparent magnitude 1.5 on 22 Dec, 1934. The nova remaining visible to the naked eye for several months.〔(【引用サイトリンク】title=Nova Herculis, Discovered in December 1934, Varies From First to Thirteenth Magnitudes--Now Fading, About Sixth )〕 With the use of a modest telescope, the nova was observable for significantly longer. DQ Herculis is the prototype for a category of cataclysmic variable stars called intermediate polars. The system shows orbital period variation, likely due to the presence of a third body. == Substellar companion ==
Dai & Qian (2009) invoke the presence of a third object to explain orbital period variations observed in the dwarf nova. If the third body is confirmed, it would likely turn out a brown dwarf companion.
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「DQ Herculis」の詳細全文を読む
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