SOFIA FIFI-LS spectroscopy of DR21 Main: Energetics of the spatially resolved outflow from a high-mass protostar

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Volume 697 (May 2025)

A&A, 697 (2025) A186

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Table 6

Far-IR line cooling in units of L_⊙.

Box	L_{[O I]}	L_{[C II]}	L_{[O III]}	L_OH	L_CO	$L_{CO}^{tot}$ $L_{\text{CO}}^{\text{tot}}$	L_tot	L_FIRL
1	9.47±1.89	1.87±0.37	0.44±0.09	0.02±0.0	0.33±0.07	1.05±0.21	12.42±2.48	17.11±3.21
2	7.42±1.48	2.09±0.42	0.84±0.17	0.03±0.01	0.28±0.06	0.92±0.18	10.45±2.09	13.22±2.46
3	11.32±2.26	2.02±0.4	2.95±0.59	0.09±0.02	0.35±0.07	1.59±0.32	15.02±3.0	18.24±3.34
4	13.21±2.64	2.2±0.44	5.51±1.1	0.16±0.03	0.58±0.12	3.41±0.68	18.99±3.8	25.37±4.41
5	15.33±3.07	2.84±0.57	6.73±1.35	0.24±0.05	1.36±0.27	5.06±1.01	23.47±4.69	33.35±5.68
6	14.88±2.98	2.49±0.5	2.81±0.56	0.23±0.05	1.42±0.28	6.55±1.31	24.14±4.83	32.5±5.21
7	8.05±1.61	1.51±0.3	0.45±0.09	0.08±0.02	0.61±0.12	3.19±0.64	12.84±2.57	17.01±2.77
8	4.78±0.96	1.02±0.2	0.24±0.05	0.02±0.0	0.2±0.04	0.88±0.18	6.7±1.34	9.08±1.64
9	5.09±1.02	0.9±0.18	0.17±0.03	0.07±0.01	0.37±0.07	0.99±0.2	7.04±1.41	9.76±1.76
10	4.49±0.9	0.55±0.11	0.15±0.03	0.06±0.01	0.46±0.09	1.14±0.23	6.25±1.25	8.94±1.56
Sum	94.04±18.81	17.49±3.5	20.3±4.06	0.98±0.2	5.97±1.19	24.79±4.96	137.3±27.46	184.59±32.06

Notes. L_{[O I]}. and L_{[O III]}. are the sums of line luminosities of two lines of atomic and ionized oxygen, respectively. L_{[C II]} is obtained from the line flux of [C II] line at 157.7 μm, and L_OH from the line flux of the OH line at 163.13 μm line. L_CO is the sum of line luminosities of the CO 14–13 and 16–15 lines. $L_{C O}^{tot}$ $L_{\mathrm{CO}}^{\text {tot}}$ refers to the extrapolated total CO line luminosity in the far-IR range (the warm component; see Sect. 4.3). L_tot refers to the total far-IR line emission from FIFI-LS, whereas $L_{FIR}^{*}$ $L^{*}_{\text{FIR}}$ accounts for the absorption in the [O I] and does not contain the emission from the [C II] line. Uncertainties include statistical error associated with absolute flux calibration.

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