Table 2.
Fit parameters and Spearman correlation coefficients of N2H+ as function of HCN.
| Region | Power a | Offset b | ρSp | p-value |
|---|---|---|---|---|
| All data | 1.10 ± 0.02 | −0.72 ± 0.02 | 0.832 ± 0.009 | < 0.001 |
| All w/o AGN | 1.20 ± 0.02 | −0.79 ± 0.02 | 0.834 ± 0.009 | < 0.001 |
| AGN, yellow | 1.13 ± 0.04 | −1.20 ± 0.06 | 0.90 ± 0.05 | < 0.001 |
| SW.Arm, pink | 1.49 ± 0.09 | −1.06 ± 0.10 | 0.75 ± 0.05 | < 0.001 |
Notes. Fit parameters for a linear fit in log-log space (log10 IN2H+ = a ⋅ log10 IHCN + b) that corresponds to a power-law relation in linear space (
). We added Spearman correlation coefficients ρSp and corresponding p-values. We only considered pixels with significant emission (i.e. > 3σ).
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