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Fig. 4

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Absorption lines of H2NC and H2CN observed with the Yebes 40 m telescope towards PKS 1830−211. We assume aredshift of z = 0.885875 to compute the rest frequency. The y-axis is the intensity normalized to the total continuum level. The red lines are the synthetic spectra computed for one component, while in the H2CN spectrum, the blue line corresponds to an additional component and the green line to the sum of the two components. See more details in Tercero et al. (2020).

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