semiforbidden
English
editEtymology
editAdjective
editsemiforbidden (not comparable)
- (mathematics, physics) Partially forbidden
- 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[1]:
- The IEL component is presented in different emission lines, including the permitted lines \lya\ 1216, \civ\ 1549, semiforbidden line \ciii\ 1909, and forbidden lines \oiii\ 4959, 5007.