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Henize 2-428 : ウィキペディア英語版 | Henize 2-428
Henize 2-428 is a planetary nebula with a binary double white dwarf system core. This core star system is the first discovered candidate for Type Ia supernova through binary white dwarf merger process. At the time of its discovery, the star system at the core was the heaviest known double white dwarf binary star system. ==Planetary nebula== The planetary nebula is asymmetric, which is the result of there being not a single star, but a binary system at the heart of the nebula.〔〔〔〔
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「Henize 2-428」の詳細全文を読む
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