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Table 3

c-C3H 212–111 transitions observed and column density-optical depth conversionsa.

Frequency FF JJ A F,F N(X)/τdvb
MHz 10-5 s-1  cm-2  (km  s-1)-1

91494.35 3–2 5/2–3/2 1.545 1.02 × 1013
91497.61 2–1 5/2–3/2 1.545 1.42 × 1013
91692.75 1–0 3/2–1/2 1.545 2.39 × 1013
91699.47 2–1 3/2–1/2 1.545 1.43 × 1013

Notes.

(a)

Spectroscopic data from Chandra et al. (2007).

(b)

Assuming excitation in equilibrium with the cosmic microwave background.

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