激げき変へん星せい

noun

cataclysmic variable; cataclysmic variable star; CV

Astronomical term for a binary star system that undergoes sudden, dramatic increases in brightness due to accretion onto a white dwarf.

• 激げき変へん星せいは、白はく色しょく矮わい星せいと伴ばん星せいからなる連星れんけい系けいです。

  A cataclysmic variable is a binary system consisting of a white dwarf and a companion star.

• この激げき変へん星せいは数すう日じつおきに増ぞう光こうを繰くり返かえす。

  This cataclysmic variable repeatedly brightens every few days.