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Table 4

Parameters of the best-fit LTE model of H13CO+ and the LTE model of SH+ fitted with the same velocity components as H13CO+.

H13CO+ SH+


nca V lsrb> ΔVc N d e N d R 12 f
(km s-1) (km s-1) (cm-2) (cm-2)
(1) (2) (3) (4) (5) (6) (7)

1 62.0 12.0 3.75 × 1014 20
2 80.0 20.0 5.00 × 1013 20
3 104.0 20.0 4.00 × 1012 20
4 51.0 12.0 4.00 × 1013 20
5 64.5 12.0 1.36 × 1014 20 1.97 × 1014 0.07
6 35.0 7.0 4.82 × 1011 40  <2.82 × 1012  <0.14
7 30.0 5.0 7.83 × 1011 40  <2.82 × 1012  <0.09
8 25.5 3.0 3.01 × 1011 40  <2.82 × 1012  <0.23
9 22.0 5.0 2.53 × 1012 60 8.45 × 1012 0.05
10 17.0 5.0 2.05 × 1012 60 2.25 × 1013 0.18
11 12.0 6.0 1.81 × 1012 60 2.82 × 1013 0.25
12 7.6 4.5 1.20 × 1012 20 2.54 × 1013 1.03
13 1.1 6.2 4.15 × 1012 20 1.69 × 1013 0.20
14 –5.5 7.0 6.02 × 1011 20 1.97 × 1013 1.61
15 –13.5 5.0 3.01 × 1011 40 1.55 × 1013 1.26
16 –19.5 5.0 6.62 × 1011 40 8.45 × 1012 0.31
17 –26.3 5.0 7.22 × 1011 40 8.45 × 1012 0.29
18 –31.0 5.0 2.17 × 1011 40 8.45 × 1012 0.96
19 –36.5 4.0 1.20 × 1011 40 8.45 × 1012 1.72
20 –41.0 3.3 1.57 × 1012 40 7.04 × 1012 0.11
21 –45.7 3.0 6.02 × 1011 40 4.23 × 1012 0.17
22 –49.5 3.0 3.01 × 1011 40 4.23 × 1012 0.34
23 –54.0 4.0 1.99 × 1011 20 9.30 × 1012 2.29
24 –59.3 4.0 5.72 × 1011 20  <2.82 × 1012  <0.24
25 –66.0 5.0 4.21 × 1011 20  <2.82 × 1012  <0.33
26 –72.0 5.0 4.21 × 1011 20 9.86 × 1012 1.15
27 –76.3 4.0 4.21 × 1011 20 8.45 × 1012 0.98
28 –80.1 4.0 2.71 × 1011 20 7.04 × 1012 1.27
29 -84.3 5.0 5.12 × 1011 20 1.27 × 1013 1.21
30 –88.5 3.5 4.21 × 1011 20  <2.82 × 1012  <0.33
31 –92.6 3.5 5.42 × 1011 20 8.45 × 1012 0.76
32 –97.2 4.0 6.62 × 1011 20 1.41 × 1013 1.04
33 –102.2 5.0 1.57 × 1012 20 1.69 × 1013 0.53
34 –108.0 4.0 3.61 × 1011 20 1.13 × 1013 1.53
35 –112.0 4.0 4.82 × 1011 20 8.45 × 1012 0.86
36 –116.0 4.0 3.61 × 1011 20 1.41 × 1013 1.91
37 –120.0 4.0 1.20 × 1011 20 5.63 × 1012 2.29
38 –123.7 4.0 1.20 × 1011 20 5.63 × 1012 2.29
39 -130.4 8.0 1.99 × 1011 20 7.04 × 1012 1.74

Notes. All components have a rotation temperature of 2.7 K except components nc = 1 to 4 of H13CO+ which have 20.0 K and nc = 5 of H13CO+ which has 3.1 K.

(a)

Component number.

(b)

LSR velocity, the same for both molecules except for one component of SH+ (5: 64.0 km s-1).

(c)

Linewidth (FWHM), the same for both molecules except for one component of SH+ (5: 19.0 km s-1).

(d)

Column density.

(e)

Assumed isotopic ratio H12CO+/H13CO+.

(f)

Column density ratio SH+/HCO+.

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