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Home All issues Volume 577 (May 2015) A&A, 577 (2015) A49 Full HTML
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Table 4

Derived molecular column densities.

Source v LSR N(SH)a N(H2S) N(CS) N(SO) N(SH) /N(H2S) N(CS) /N(H2S) N(SO) /N(H2S)
(km s-1) (1012 cm-2) (1012 cm-2) (1012 cm-2) (1012 cm-2)
W49N 37–44 46.6 (7.7) 37.2 (0.2) 17.2 (0.1) 2.9 (0.3) 1.25 (0.21) 0.46 (< 0.01) 0.08 (< 0.01)
W49N 57–67 22.1 (8.3) 13.0 (0.2) 6.9 (0.1) 3.1 (0.4) 1.70 (0.63) 0.53 (0.01) 0.24 (0.03)
W31C 15–18 34.5 (1.6) 11.7 (0.1) 5.9 (0.1) 2.5 (0.3) 2.96 (0.14) 0.51 (0.01) 0.21 (0.02)
W31C 18–21 10.5 (1.2) 4.9 (0.1) 1.6 (0.1) 0.6 (0.2) 2.17 (0.26) 0.34 (0.02) 0.12 (0.05)
W31C 21–25 26.3 (1.4) 12.4 (0.2) 4.9 (0.1) 2.4 (0.3) 2.13 (0.12) 0.39 (0.01) 0.20 (0.02)
W31C 25–36 113.9 (2.4) 55.1 (0.3) 26.2 (0.2) 10.4 (0.5) 2.07 (0.05) 0.48 (< 0.01) 0.19 (< 0.01)
W31C 36–45 41.6 (2.3) 15.1 (0.2) 9.1 (0.2) 4.5 (0.4) 2.76 (0.16) 0.61 (0.02) 0.30 (0.03)
W51 62–75b 175.4 (2.1) 155.5 (1.7) 37.0 (0.5) 63.3 (1.1) 1.13 (0.02) 0.24 (< 0.01) 0.41 (< 0.01)
G34.3+0.1 25–30 5.9 (1.1) 4.3 (0.3) 1.4 (0.1) <1.2 (3σ) 1.36 (0.28) 0.32 (0.03) <0.3 (3σ)
G29.96-0.02 5–10 21.8 (4.1) 19.5 (0.9) 7.2 (0.2) 1.6 (0.5) 1.12 (0.22) 0.37 (0.02) 0.08 (0.03)

Notes.

(a)

Numbers in parentheses are 1 sigma statistical errors.

(b)

Material absorbing in this velocity interval may lie in close proximity to W51, where radiative excitation is important: the derived column densities, computed for the conditions in foreground diffuse clouds, should therefore be regarded with caution.

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