Table 3.
HCN/CO and SFR/HCN statistics by environment.
| Ratio | Environment | (16th, 84th) perc. | Mean | Stacks |
|---|---|---|---|---|
| S/N ≥ 3 | S/N ≥ 3 | all S/N | ||
 |
Full galaxy | (0.035, 0.076) | 0.067 | 0.043 ± 0.001 |
| Centre | (0.060, 0.104) | 0.089 | 0.090 ± 0.001 | |
| Bar | (0.037, 0.065) | 0.049 | 0.037 ± 0.001 | |
| Bar ends | (0.036, 0.058) | 0.046 | 0.043 ± 0.001 | |
| Spiral arms | (0.031, 0.057) | 0.041 | 0.028 ± 0.001 | |
| Interarm | (0.037, 0.074) | 0.049 | 0.015 ± 0.003 | |
| Full galaxy | (0.019, 0.122) | 0.040 | 0.069 ± 0.002 | |
 |
Centre | (0.016, 0.049) | 0.025 | 0.025 ± 0.001 |
| Bar | (0.007, 0.049) | 0.028 | 0.039 ± 0.001 | |
| Bar ends | (0.040, 0.124) | 0.083 | 0.086 ± 0.003 | |
| Spiral arms | (0.055, 0.146) | 0.112 | 0.125 ± 0.006 | |
| Interarm | (0.036, 0.131) | 0.084 | 0.274 ± 0.057 | |
Notes. Statistics of spectroscopic ratios across the different environments (right panel of Fig. 3) corresponding to the distributions shown in Fig. 5. The third column shows the 16th and 84th percentiles of the detected measurements (S/N ≥ 3). The fourth column lists the mean of the detected data, which is computed as the sum of the numerator data over the sum of the denominator data of the spectroscopic ratio. The fifth column shows the stacks mean over all S/N along with measurement uncertainties (in dex) in the respective environment. The measurement uncertainties are computed from the rms of the emission-free channels of the stacks (Eq. (2)) and do not include any calibration or systematic uncertainties.
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