Distribution of ionized, atomic, and PDR gas around S 1 in ρ Ophiuchus

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Table 2

Peak optical depth, corresponding velocity, and the FWHM of the foreground absorbing gas derived from modeling the [C II] and [O I] 63 μm spectra with a two-slab model.

Position	Species	Ratio	τ₀	υ_LSR	Δυ	N_abs	T_kin
				(km s⁻¹)	(km s⁻¹)	(cm⁻²)	(K)
(− 61,45)	[C II]	70	4.7	3.5	1.4	9.9 × 10¹⁷	157
	[O I] 63	2	6.8	4.0	2.2	3.0 × 10¹⁸

(− 33, 6)	[C II]	70	3.5	4.4	3.4	1.8 × 10¹⁸	121
	[O I] 63	2	7.9	3.7	1.9	3.0 × 10¹⁸

(− 31, − 31)	[C II]	70	4.8	3.9	1.5	1.1 × 10¹⁸	130
	[O I] 63	2	8.5	3.8	1.7	2.9 × 10¹⁸

(32, − 23)	[C II]	70	3.5	3.9	2.2	1.2 × 10¹⁸	97
	[O I] 63	2	4.1	3.8	1.9	1.6 × 10¹⁸

(60, − 45)	[C II]	70	4.6	3.9	1.4	9.7 × 10¹⁷	79
	[O I] 63	2	6.0	4.1	1.9	2.3 × 10¹⁸

Notes. The presented is an estimate of the lower limit of the kinetic temperature of the [C II] emitting gas. It corresponds to the peak of the fitted background [C II] spectrum, assumed to have an optical thickness of unity.

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