Open Access
Fig. B.1
Spectra of the N, J = 2, 3∕2 → 1, 1∕2 transitions of 13CH near 1997 GHz (top) and CH near 2006 GHz (middle) observed towards W3(OH) in black. The Wiener filter model of the observed CH spectrum is overlaid in red. Bottom panel: Wiener filter deconvolved CH spectrum in optical depth scales.
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