semiforbidden en · ADJ
Etymology
From semi- + forbidden.
Meanings
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(not-comparable) Partially forbidden
The IEL component is presented in different emission lines, including the permitted lines \lya\ #92;lambda1216, \civ\ #92;lambda1549, semiforbidden line \ciii\ #92;lambda1909, and forbidden lines \oiii\ #92;lambda#92;lambda4959, 5007.
2016, Zhenzhen Li, Hongyan Zhou, Lei Hao, Shufen Wang, Tuo Ji, Bo Liu, “Strong Optical and UV Intermediate-Width Emission Lines in the Quasar SDSS J232444.80-094600.3: Dust-Free and Intermediate-Density Gas at the Skin of Dusty Torus ?”, in arXiv: