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Planetary nebula luminosity function
查词链接:
https://www.dute.org/dict/Planetary_nebula_luminosity_function
复制链接 行星状星云亮度函数(行星状星云亮度函数是适合螺旋和椭圆星系的第二级距离标识)
查看英英释义
abstract:
Planetary nebula luminosity function (PNLF) is a secondary distance indicator used in astronomy. It makes use of the [O III] λ5007 forbidden line found in all planetary nebula which are members of the old stellar populations (Population II).
网络释义
行星状星云亮度函数
... Blinking Planetary Nebula 英语 Planetary nebula luminosity function 行星状星云亮度函数 bipolar planetary nebula 双极行星状星云 ; 行星状星云 ...
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