Table A.1.
Synthetic galaxy: Input and best fit values for all model parameters.
| Parameter | Model | Input value | Best fit value | Error | Rel. dev. | Within errors |
|---|---|---|---|---|---|---|
| component | from input | 1=true, 0=false | ||||
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
| X0 | Position | 158.598 | 158.597 | 0.003 | 0.00% | 1 |
| Y0 | 153.462 | 153.462 | 0.001 | 0.00% | 1 | |
| PA (°) | Point source | 0 | Fixed | Fixed | Fixed | Fixed |
| ell | 0 | Fixed | Fixed | Fixed | Fixed | |
| I0 (counts) | 167000 | 169900 | 4985 | 1.74% | 1 | |
| σ | 0.1 | Fixed | Fixed | Fixed | Fixed | |
| PA (°) | Bulge | 70.970 | 85.154 | 52.559 | 19.99% | 1 |
| ell | 0.031 | 0.235 | 0.284 | 646.91% | 1 | |
| n | 1.800 | 1.646 | 2.240 | 8.53% | 1 | |
| Ie (counts) | 17.140 | 16.942 | 21.102 | 1.16% | 1 | |
| re (px) | 3.200 | 3.848 | 4.295 | 20.26% | 1 | |
| PA (°) | Bar1 | 113.450 | 113.489 | 0.088 | 0.03% | 1 |
| ell | 0.730 | 0.731 | 0.002 | 0.19% | 1 | |
| c0 | 2.000 | 1.957 | 0.134 | 2.16% | 1 | |
| n | 0.320 | 0.314 | 0.007 | 1.92% | 1 | |
| Ie (counts) | 5.200 | 5.163 | 0.073 | 0.71% | 1 | |
| re (px) | 32.170 | 32.321 | 0.166 | 0.47% | 1 | |
| PA (°) | Bar2 | 113.450 | 113.451 | 2.112 | 0.00% | 1 |
| ell | 0.160 | 0.125 | 0.036 | 21.94% | 1 | |
| c0 | 24.200 | 30.707 | 66.273 | 26.89% | 1 | |
| n | 0.500 | 0.794 | 0.191 | 58.85% | 0 | |
| Ie (counts) | 9.200 | 14.577 | 4.075 | 58.45% | 0 | |
| re (px) | 5.100 | 4.776 | 0.486 | 6.36% | 1 | |
| PA (°) | Bar3 | 113.450 | 113.570 | 0.070 | 0.11% | 0 |
| ell | 0.900 | 0.898 | 0.002 | 0.22% | 1 | |
| c0 | 1.240 | 1.301 | 0.255 | 4.96% | 1 | |
| n | 0.160 | 0.154 | 0.010 | 3.87% | 1 | |
| Ie (counts) | 7.250 | 7.234 | 0.125 | 0.23% | 1 | |
| re (px) | 27.530 | 27.409 | 0.253 | 0.44% | 1 | |
| PA (°) | Disc | 70.970 | 71.316 | 0.287 | 0.49% | 0 |
| ell | 0.140 | 0.139 | 0.001 | 0.41% | 1 | |
| I0 (counts) | 20.000 | 20.021 | 0.073 | 0.11% | 1 | |
| h (px) | 28.900 | 28.774 | 0.050 | 0.43% | 0 | |
| Isky (counts) | Background | 0.0010 | 0.0004 | 0.0006 | 59.92% | 1 |
Notes. The synthetic galaxy was created with six different structural components and a flat sky background. Poisson noise was added afterwards, but before the fitting procedure. This table gives an overview of the input values as well as all 31 simultaneously fitted free parameters and 3 fixed parameters. (1) Parameter; (2) structural component of the model; (3) input value to create the synthetic galaxy; (4) best fit value; (5) 1σ error estimate from bootstrapping with 200 iterations; (6) relative deviation of the best fit value from the input value; and (7) check whether the input value lies within the 1σ interval of the best fit result.
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