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Table 3

Fractional abundances of C2H in the SB ring and the outflow regions.

SB ring Outflow

Tex = 10 K (1.3 ± 0.7) × 10-8 (1.6 ± 0.8) × 10-8
Tex = 25 K (9.7 ± 4.0) × 10-8 (1.1 ± 0.4) × 10-7
Tex = 50 K (4.3 ± 2.0) × 10-7 (4.8 ± 2.0) × 10-7
Tex = 100 K (1.8 ± 0.8) × 10-6 (2.0 ± 0.8) × 10-6
Tex = 150 K (4.2 ± 2.0) × 10-6 (4.7 ± 2.0) × 10-6

Notes. Abundances are estimated from the C2H-(1−0) line with gas column densities derived from the dust continuum emission at 349 GHz. We assume LTE conditions and a range of excitation temperatures as explained in Sect. 3.4.

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