单词 | type II supernova |
释义 | type II supernova [`tīp ¦tü ¦sü·pǝr`nō·vǝ] ASTRONOMY A member of a class of supernovae whose individual light curves vary considerably, but which in general show a weaker maximum and slower decline than type I supernovae, with marked periods of constant brightness during the decrease, and whose spectra are continuous until about a month after maximum when broad emission lines develop. |
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