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Table 3.

Observed fluxes of the J = 2 − 1 lines and angular sizes of the emission region (Δθ3σC18O) and full widths at zero intensity (ΔυC18O) of the C18O J = 2 − 1 line.

Source S13CO SC17O SC18O S3σC18O Δθ3σC18O ΔυC18O
[Jy km s−1] [Jy km s−1] [Jy km s−1] [Jy km s−1] [″] [km s−1]
GLMP 950 15.3 (1.6) 1.9 (0.3) 1.13 (0.15) 1.03 (0.14) 2.4 × 2.4 41
GLMP 953 23.3 (2.5) 2.7 (0.3) 2.1 (0.3) 1.9 (0.3) 3.0 × 2.5 37
AFGL 5385 49 (5) 2.3 (0.4) 3.6 (0.5) 3.8 (0.5) 4.2 × 3.5 45
HD 187885 64 (7) 1.5 (0.3) 2.4 (0.3) 2.2 (0.3) 3.2 × 3.2 61
Hen 3-1475 39 (4) 2.8 (0.3) 2.2 (0.3) 1.7 (0.3) 2.8 × 2.4 100
M1-92 210 (20) 16 (2) 8.9 (1.3) 7.6 (1.3) 8.6 × 4.4 89

Notes. The uncertainties shown here include those from flux-calibration, which were not considered when calculating line-ratio uncertainties.

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