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Table 1

Line equivalent widths and absorption fluxes.

NGC 4418 Arp 220
Line Elower λ Aul Weqa Fluxa Weqa Fluxa
(K) (μm) (s-1) (km   s-1) (10-21 W cm-2) (km   s-1) (10-21 W cm-2)
OH+  21 − 10 43.6 148.696 0.10 6.7(1.8) 0.79(0.21) 17.8(0.9) 10.0(0.5)
OH+  23 − 12 46.6 152.989 0.18 b b b b
OH+  22 − 12 46.6 147.768 0.048 3.9(1.6) 0.47(0.19) 20.7(1.2) 12.0(0.7)
OH+  22 − 11 49.6 152.369 0.14 19.5(2.1) 2.1(0.2) 45.3(1.3) 24.6(0.7)
OH+  21 − 11 49.6 158.437 0.071 5.9(3.0) 0.6(0.3) 19.8(1.1) 9.6(0.5)
OH+  45 − 34 281.9 76.510 1.6 3.1(0.7) 1.6(0.4) 5.8(0.4) 10.6(0.7)
OH+  43 − 32 282.5 76.245 1.5 3.2(0.8) 1.6(0.4) 3.1(0.4) 5.7(0.7)
OH+  44 − 33 285.5 76.399 1.5 3.8(0.8) 1.9(0.4) 4.0(0.4) 7.4(0.7)
0.0 184.339 0.086  <4.8  <0.25 47.6(2.1) 10.5(0.5)
0.1 182.915 0.073  <3.7  <0.21 30.8(2.1) 7.5(0.4)
0.0 182.640 0.016  <3.7  <0.21 14.5(1.6) 3.6(0.4)
29.1 105.742 0.46 7.6(2.3) 2.1(0.6) 6.2(0.8) 7.7(1.0)
30.4 104.719 0.39 b b b b
89.1 143.813 0.18 5.2(2.5) 0.65(0.31) 22.6(1.1) 14.0(0.7)
89.3 143.270 0.17  <3.0  <0.38 8.3(0.9) 5.2(0.6)
125.0 89.590 0.59 7.2(2.3) 2.9(0.9) 10.2(0.7) 16.6(1.1)
125.9 88.978 0.57 5.4(1.6) 2.2(0.6) 2.2(1.1) 3.6(1.8)
189.2 145.917 0.16 4.4(0.8) 0.55(0.10) 2.0(0.5) 1.2(0.3)
189.8 146.217 0.15 4.7(0.8) 0.58(0.10) 5.5(0.6) 3.2(0.4)
102.0 180.209 0.083  <3.9  <0.25 28(3)c 8.5(1.0)c
179.0 178.994 0.091  <3.9  <0.27 12.7(1.3) 4.0(0.4)
273.4 177.272 0.097  <6.0  <0.44 13.9(1.6) 4.4(0.5)
385.1 175.063 0.10  <4.6  <0.38 18.6(1.3) 6.4(0.4)
514.0 172.396 0.11  <3.4  <0.28 11.8(1.4) 4.2(0.5)
660.1 169.303 0.12 d d 13.7(1.2) 5.4(0.5)
823.3 165.819 0.13 8.0(2.0) 0.71(0.18) 16.5(2.0)e 6.9(0.8)e
1003.5 161.984 0.14  < 3.7  < 0.36 7.5(1.1) 3.3(0.5)
1414.7 153.424 0.17 8.5(1.5)f 4.5(0.8)f
179.0 60.164 0.49 5.8(2.0) 4.1(1.4) 5.5(1.2) 12.1(2.7)
102.0 69.538 0.38 6.1(1.3) 3.7(0.8) 17.0(1.5) 33.6(2.9)
139.3 70.254 0.63  < 2.3  < 1.4 5.4(0.7) 10.4(1.4)
161.7 70.684 0.77 5.9(1.9) 3.5(1.1) 4.8(0.5) 9.1(1.0)
169.1 70.827 0.81 8.0(2.0) 4.6(1.2) 7.7(0.8) 15.8(1.5)
42.3 82.274 0.28 4.0(1.3) 1.8(0.6) 7.9(0.6) 13.8(1.0)
64.7 82.868 0.44  < 1.2  < 0.6 13.1(0.7) 23.2(1.2)

Notes. 

(a)

Numbers in parenthesis indicate 1σ uncertainties.

(b)

The line is strongly contaminated.

(c)

Contaminated by H2O and CH (Fig. 4a).

(d)

Dominated by HCN (Paper I).

(e)

Contaminated by NH3; the line flux in Arp 220 is estimaded by subtracting the modeled NH3 flux from the flux of the whole feature (Fig. 4g).

(f)

Tentative detection, at the wing of the NH 153 μm line (Figs. 2a and 4i).

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