Tables are given from which the continuous spectrum of emission nebulae can be computed from a knowledge of the electron temperature, the electron density, and the abundance of helium ions. The recombination continua of He I are determined from photoionization cross-sections calculated by the quantum-defect method as described by Peach. Total recombination coefficients to low levels of He0 are also computed.
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Brown et al. (1970) studied this question.
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