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Table 4

Physical parameters of the observed molecular clouds derived from LVG analysis.

Cloud Beam-averaged column densities Mass
name Tk(H2) n(H2) N(CO) N([ CI ])a N([ CII ])b N η M(H2+He)b
[K] [104 cm-3] [1017 cm-2] [1022 cm-2] [104M⊙]
N 66 plume 40 0.9 0.40 0.40 1.82 (0.4–5.3) 2.62 0.41 2.4
N 66 ridge 50 0.3 0.22 0.07d 0.26 (0.1–1.1) 0.55 0.08 1.3
N 25+N 26 50 1.0 0.37 0.18 2.93 (0.9–7.8) 3.48 0.37 3.6
N 88 30 3.0 0.26 0.16 4.47 (0.5–7.8) 4.89 0.26 3.2

Notes.Assuming a 27.3′′ beam.

(a)

Assuming H2 temperature and density as derived for CO.

(b)

Calculated following Eq. (1) from Pineda et al. (2013); value adopted assumes temperature T and density n of the molecular hydrogen collision partner as given in Cols. 2 and 3. In parentheses we give the range from the minimum [ CII ] column density in the high-T, high-n limit, and the column density if the collision partner H2 has a density an order of magnitude lower than given in Col. 3.

(c)

Assuming the nominal [ CII ] column density and a carbon depletion factor δc = 0.4.

(d)

[CI] data missing for some of the peaks.

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