Table 4.
Mean gas-phase metallicities and linear models parameters for each galaxy.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|
| Galaxy | Mean | Reff | ∇(O/H) | (O/H)0 | ∇(O/H) | (O/H)0 |
| metallicity | NUV band | no DIG | no DIG | with DIG | with DIG | |
 |
[arcsec] | [dex/Reff] | [dex/Reff] | |||
| DDO 53 | 7.665 ± 0.003 | 21.06 | −0.03 ± 0.02 | 7.75 ± 0.09 | −0.03 ± 0.02 | 7.75 ± 0.09 |
| DDO 154 | 7.74 ± 0.01 | 36.75 | −0.07 ± 0.17 | 7.82 ± 0.26 | −0.07 ± 0.17 | 7.82 ± 0.26 |
| Holmberg I | 7.755 ± 0.006 | 68.85 | 0.45 ± 0.19 | 7.38 ± 0.18 | 0.20 ± 0.17 | 7.60 ± 0.17 |
| M81 DwB | 8.011 ± 0.002 | 14.79 | 0.01 ± 0.05 | 8.01 ± 0.04 | 0.01 ± 0.05 | 8.01 ± 0.04 |
| Holmberg II | 7.672 ± 0.002 | 129.06 | −0.18 ± 0.03 | 7.79 ± 0.03 | −0.17 ± 0.03 | 7.80 ± 0.03 |
| NGC 2366 | 7.851 ± 0.001 | 121.97 | −0.214 ± 0.017 | 7.988 ± 0.014 | −0.221 ± 0.018 | 8.007 ± 0.015 |
| NGC 4214 | 8.1907 ± 0.0004 | 63.09 | −0.027 ± 0.003 | 8.214 ± 0.003 | −0.03 ± 0.003 | 8.202 ± 0.004 |
| NGC 1569 | 8.1281 ± 0.0001 | 16.70 | −0.012 ± 0.002 | 8.153 ± 0.006 | −0.008 ± 0.003 | 8.145 ± 0.007 |
| IC 2574 | 7.840 ± 0.001 | 185.88 | −0.204 ± 0.028 | 8.084 ± 0.037 | −0.19 ± 0.028 | 8.069 ± 0.038 |
| NGC 4449 | 8.2150 ± 0.0001 | 45.00 | −0.023 ± 0.001 | 8.26 ± 0.003 | −0.02 ± 0.001 | 8.254 ± 0.003 |
| NGC 2976 | 8.3607 ± 0.0003 | 68.46 | −0.041 ± 0.005 | 8.366 ± 0.006 | −0.069 ± 0.006 | 8.384 ± 0.007 |
| NGC 3077 | 8.4288 ± 0.0004 | − | − | − | − | − |
| NGC 2403 | 8.3541 ± 0.0001 | 220.76 | −0.138 ± 0.004 | 8.442 ± 0.003 | −0.159 ± 0.004 | 8.442 ± 0.003 |
| NGC 925 | 8.2695 ± 0.0004 | 199.22 | −0.127 ± 0.006 | 8.350 ± 0.004 | −0.127 ± 0.006 | 8.350 ± 0.004 |
| NGC 3198 | 8.4746 ± 0.0003 | 127.5 | −0.196 ± 0.006 | 8.603 ± 0.004 | −0.201 ± 0.006 | 8.605 ± 0.004 |
| NGC 4826 | 8.6187 ± 0.0002 | 57.09 | −0.011 ± 0.014 | 8.620 ± 0.008 | −0.064 ± 0.006 | 8.648 ± 0.005 |
| NGC 4736 | 8.5694 ± 0.0002 | 40.84 | −0.014 ± 0.002 | 8.582 ± 0.004 | −0.046 ± 0.004 | 8.617 ± 0.007 |
| NGC 3184 | 8.5306 ± 0.0004 | 109.91 | −0.082 ± 0.004 | 8.575 ± 0.004 | −0.085 ± 0.005 | 8.575 ± 0.004 |
| NGC 5457 | 8.4896 ± 0.0002 | 323.72 | −0.235 ± 0.004 | 8.596 ± 0.002 | −0.271 ± 0.005 | 8.602 ± 0.003 |
| NGC 6946 | 8.5405 ± 0.0001 | 203.37 | −0.102 ± 0.002 | 8.598 ± 0.002 | −0.104 ± 0.002 | 8.599 ± 0.002 |
| NGC 5055 | 8.5685 ± 0.0002 | 149.35 | −0.031 ± 0.003 | 8.585 ± 0.002 | −0.037 ± 0.003 | 8.588 ± 0.002 |
| NGC 5194 | 8.5955 ± 0.0001 | 150.59 | −0.019 ± 0.002 | 8.607 ± 0.002 | −0.022 ± 0.002 | 8.609 ± 0.002 |
| NGC 3521 | 8.5922 ± 0.0001 | 121.43 | −0.054 ± 0.003 | 8.633 ± 0.002 | −0.069 ± 0.002 | 8.643 ± 0.002 |
| NGC 2841 | 8.5959 ± 0.0008 | 115.38 | −0.041 ± 0.007 | 8.630 ± 0.008 | −0.069 ± 0.008 | 8.655 ± 0.010 |
| NGC 7331 | 8.5507 ± 0.0002 | 193.52 | −0.105 ± 0.005 | 8.614 ± 0.005 | −0.11 ± 0.005 | 8.616 ± 0.005 |
Notes. Each column shows information as follows: 1) galaxy designation; 2) mean gas-phase metallicity; 3) and 6) linear model parameters and errors without DIG-dominated fibres; 7) and 8) linear model parameters and errors with all fibres. Each linear model was fitted using a Bayesian MCMC routine. For the metallicity values, the average value was calculated for each galaxy using all PG16 values for each fibre weighted by the uncertainty.
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