An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Type I supernova
  ابر-نو-اختر ِ گونه‌ی ِ I  
abar-now-axtar-e gune-ye I
Fr.: supernova de type I  

A type of supernova whose spectra lacks hydrogen lines. Its → light curve exhibits a sharp maximum with a gradual decrease. Typical magnitudes MV = -14 to -17. Ejecta velocities about 10,000 km/sec. Type I supernovae have several subtypes: → Type Ia, → Type Ib, and → Type Ic.

See also: Type I initially introduced by R. Minkowski (1941, PASP 53, 224); → type; → supernova.