Abstract
The Inglis-Teller relation, generalized for a hydrogen-like or alkali-like ion with an arbitrary core charge, is used to estimate the electron density in the emission-line region of Wolf-Rayet stars. It is found that the electron density in the region which gives rise to Heii emission lines is ≃4×1014 cm−3.
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Varshni, Y.P. Electron density in the emission-line region of Wolf-Rayet stars. Astrophys Space Sci 56, 385–388 (1978). https://doi.org/10.1007/BF01879569
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DOI: https://doi.org/10.1007/BF01879569