Opacity broadening and interpretation of suprathermal CO linewidths: Macroscopic turbulence and tangled molecular clouds

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Table 1

Statistical properties of the observed CO spectra in L1517.


	C¹⁸O	¹³CO	¹²CO	¹³CO	¹³CO


Description	Standard	Standard	Standard	Enhanced	Low T_ex
J	(1−0)	(1−0)	(1−0)	(1−0)	(1−0)
X	1	7.3	560	15	7.3
T_ex	10	10	10	10	8
τ₀^a	0.28 ± 0.14	2.05 ± 1.03	158.7 ± 80.4	4.20 ± 2.11	3.08 ± 1.70
⟨ ΔV ⟩ (km s^-1)	0.28 ± 0.07	0.54 ± 0.09	0.90 ± 0.17	0.54 ± 0.09	0.55 ± 0.09
⟨ ΔV_int ⟩ (km s^-1)^b	0.27 ± 0.07	0.41 ± 0.09	0.32 ± 0.07	0.35 ± 0.07	0.37 ± 0.09
⟨ σ_NT/c_s ⟩	0.56 ± 0.18	1.19 ± 0.21	2.01 ± 0.39	1.19 ± 0.21	1.18 ± 0.22
⟨ σ_NT,corr/c_s ⟩	0.53 ± 0.18	0.87 ± 0.21	0.67 ± 0.16	0.73 ± 0.18	0.79 ± 0.20

Notes. Uncertainties given correspond to 1σ values.

^(a)

Line opacities obtained from Eq. (7).

^(b)

Opacity corrected intrinsic linewidths estimated according to Eq. (4).

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