The water line emission and ortho-to-para ratio in the Orion Bar photon-dominated region

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Volume 632 (December 2019)

A&A, 632 (2019) A8

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Table 2

Observed intensities of water lines toward the Orion Bar and their correction for the beam coupling factor.

Transition	I_Obs ^(a)	I_Corr	Ω ^(b)				1∕Ω ^(c)

	(K km s⁻¹)	(K km s⁻¹)	H₂O	¹²CO 1−0 ^(d)	¹²CO 6−5 ^(e)	¹³CO 6−5 ^(e)
1₁₀−1₀₁	21.13 ± 0.95	27.48 ± 1.19	0.83 ± 0.07	0.80 ± 0.02	0.85 ± 0.02	0.66 ± 0.04	1.32 ± 0.17
1₁₁−0₀₀	10.28 ± 0.75	12.57 ± 0.89	0.61 ± 0.04	0.86 ± 0.03	0.85 ± 0.03	0.73 ± 0.08	1.24 ± 0.13
2₁₂−1₀₁	8.91 ± 0.60	12.46 ± 0.83	0.78 ± 0.04	0.86 ± 0.03	0.79 ± 0.01	0.72 ± 0.04	1.28 ± 0.11
2₀₂−1₁₁	8.06 ± 0.59	9.41 ± 0.66	0.3 ± 0.2	0.85 ± 0.04	0.86 ± 0.03	0.73 ± 0.07	1.27 ± 0.13
2₁₁−2₀₂	7.82 ± 0.60	9.95 ± 0.75	0.77 ± 0.01	0.82 ± 0.03	0.87 ± 0.03	0.69 ± 0.05	1.24 ± 0.16
2₂₁−2₁₂	2.62 ± 0.31	3.13 ± 0.34		0.87 ± 0.03	0.79 ± 0.01	0.74 ± 0.04	1.26 ± 0.10
3₁₂−3₀₃	1.85 ± 0.18	2.24 ± 0.20		0.86 ± 0.03	0.85 ± 0.03	0.73 ± 0.08	1.24 ± 0.13

1₁₀−1₀₁	0.29 ± 0.02	0.36 ± 0.02	0.6 ± 0.4	0.79 ± 0.03	0.85 ± 0.02	0.65 ± 0.05	1.33 ± 0.18
1₁₁−0₀₀	<0.34 ± 0.15	<0.42 ± 0.16		0.86 ± 0.03	0.85 ± 0.03	0.73 ± 0.08	1.24 ± 0.13

Notes. ^(a) Integration range is around 7.7km s⁻¹ and 13.5 km s⁻¹. Precise integration range for each line is given in Table A.1. ^(b) H and V averaged beam coupling factors from each tracer. ^(c)Mean global corrective coefficients from CO maps. ^(d)Kong et al. (2018). ^(e)Lis & Schilke (2003). Values for ¹³CO are obtainedwith a 4′′ shift toward the ionization front.

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