Comparison of Lyman and Balmer continuum spectra for the photoionization processes (a) 1s₀ → 1⁺, (b) 2s₀ → 1⁺, and (c) 2p₀ → 1⁻ at γ = 0.1 au. The cyan solid and magenta dashed curves represent the current results from the coupled-channel theory, and those from the complex-rotation method (Zhao & Stancil 2007b), respectively.