Table 4
Molecular line ratio trends on larger regional scales.
| Regions | |||||||||
|
|
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| Ratio | Center | Edge | mHVC | Triop | SEW | CND N&E | CND W | V-cloud | SEE |
|
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| CS/C2H | 5–7 5,12,20 | 2–4 | – | 1–2 | 5–7 SEW2 | 1–3 CND-10 | – | – | – |
| CS/SO | 5–15 4 | 2 | 2–3 | 2–4 T1 | 5–8 | 2–4 | – | – | – |
| CS/H13CO+ | 5–16 | 5 | – | 2–4 | 8–14 | – | – | – | – |
| CS/SiO | 5–17 | – | 2 | 3–5 T9 | 7–9 | 2–5 | – | – | – |
| CS/HC3N | 6–9 | 3 | – | 6–7 T4 | – | – | – | – | – |
| CS/CH3OH(7–6) | 4–11 | 4 | – | – | – | – | – | – | – |
| C2H/SO | 1.3–2.1 | 1.2 | – | 1.5 | 1.0–1.6 | – | – | – | – |
| C2H/H13CO+ | 1.8–3.0 3 | – | – | 1.5 | 2.1–2.6 | – | – | – | – |
| C2H/SiO | 2.2–2.6 14 | – | – | – | 1.1–1.9 | – | – | – | – |
| SO/SiO | 1.0–2.4 | – | – | 1.1 | 1.2–1.7 | 1.4 | – | – | – |
| SO/H13CO+ | 0.7–1.9 | – | – | 1.2 | 1.7–2.3 | – | – | – | – |
| SiO/H13CO+ | 0.6–1.7 | – | – | 1.2 | 1.6 | – | – | – | – |
| H13CO+/HC3N | 1.3–1.9 | – | – | 1.6 | – | – | – | – | – |
| H13CO+/CH3OH(7–6) | 1.0–1.6 | 0.7 | – | – | – | – | – | – | – |
| CS/N2H+ | – | – | – | 2–4 | – | 1–7 | 2–8 | – | – |
| CS/CH3OH(8–7) | – | – | – | 4–8 | – | 8 | 10–15 | – | – |
| CS/13CS | – | – | – | 5–7 | 28–33 | 4–8 | 8–13 | – | – |
| N2H+/H13CO+ | – | – | – | 0.6–1.3 | – | 1–2 | 0.8 | – | – |
| N2H+/CH3OH(8–7) | – | – | – | 1.3–2.5 | – | 2.3 | 1.3–2.1 | 1.0–1.7 | 4.0 |
| N2H+/13CS | – | – | – | 2.3–2.5 | – | 1.9–3.2 | 1.0–1.6 | – | 3.9 |
| 13CS/CH3OH(8–7) | – | – | – | 0.8 | – | – | 1.1–1.7 | – | – |
Notes. Ratios are obtained from a beam-sized aperture of 0.65′′ centered onto the average position of all integrated emission line peaks in the corresponding region. For ratios with N2H+, CH3OH(8–7), and 13CS a beam-sized aperture of 1.5′′ is used. SiO refers to the J = 6–5 transition of SiO. The regions comprise the following clumps (see Fig. A.12) listed in the Table E.1: Center: the bulk of the CA, clumps 1–16, 20; edge: Edge of the CA, clumps 19, 21, 22; mHVC: high velocity molecular clouds, clumps 24−27; Triop: clumps T1 – T11; SEW: clumps SEW1 – SEW4; CND N&E: northern and eastern edge of the CND, clumps SEW8 – SEW13, CND1 - CND10; CND W: western CND, clumps CND-W1 – CND-W3; V-cloud: clumps V1 – V12; SEE: clumps SEB1 – SEB6.
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