Multiline observations of hydrogen, helium, and carbon radio-recombination lines toward Orion A: A detailed dynamical study and direct determination of physical conditions

Open Access

Fig. 4

Stacked Hnα, Hnβ, Hnγ, Hnδ, and Hnє radio-recombination lines toward the ten targeted positions. Spectra in in the top row are offset from the Hnє spectrum in steps of 0.15 K, and spectra in the lower two rows are offset in steps of 0.01 K.

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