Table 5
N(HC3N) / N(CS) ratios and percentage contribution of each region to the overall dense molecular gas.
| Maffei 2 | IC 342 | NGC 253 | M 82 | ||||||
| (NHC3N / NCS − %contribution) | |||||||||
|
|
|||||||||
| Region I ( ∼ 104 cm-3) | ... − 92% | 0.10 − 75% | 0.10 − 77% | ... − ... | |||||
| Region II ( ∼ 105 cm-3) | 0.33 − 8% | 0.39 − 19% | 0.33 − 14% | ... − 90% | |||||
| Region III ( ∼ 106 cm-3) | ... − ... | ... − 6% | ... − 9% | 0.53 − 10% | |||||
Notes. The fist value indicates the N(HC3N) / N(CS) ratio obtained from our LVG code. The second value represents the percentage contribution of each region (I, II or III) to the overall dense molecular gas, traced by CS, within the molecular clouds in the center of the galaxies, obtained from our LVG model.
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