Table 2.
BIC values for different LENSTRONOMY model setups.
| Source light | Likelihood computation | Run | ΔBIC | BIC |
|---|---|---|---|---|
| nmax | region size | number | weight | |
| Power-law ellipsoid model | ||||
| {9, 13} | {2.2, 3.6} | 2 | 0 | 1.00 |
| {9, 13} | {2.2, 3.6} | 1 | 43 | 0.95 |
| {8, 12} | {2.2, 3.6} | 2 | 209 | 0.76 |
| {8, 12} | {2.2, 3.6} | 1 | 235 | 0.73 |
| {7, 11} | {2.2, 3.6} | 2 | 606 | 0.37 |
| {7, 11} | {2.2, 3.6} | 1 | 726 | 0.29 |
| {9, 13} | {2.3, 3.7} | 2 | 2129 | 0.00 |
| {8, 12} | {2.3, 3.7} | 2 | 2350 | 0.00 |
| {9, 13} | {2.3, 3.7} | 1 | 2366 | 0.00 |
| {7, 11} | {2.3, 3.7} | 2 | 2778 | 0.00 |
| {8, 12} | {2.3, 3.7} | 1 | 2786 | 0.00 |
| {7, 11} | {2.3, 3.7} | 1 | 2793 | 0.00 |
| Composite model | ||||
| {9, 13} | {2.2, 3.6} | 1 | 0 | 1.00 |
| {9, 13} | {2.2, 3.6} | 2 | 10 | 0.99 |
| {8, 12} | {2.2, 3.6} | 1 | 318 | 0.64 |
| {8, 12} | {2.2, 3.6} | 2 | 449 | 0.51 |
| {7, 11} | {2.2, 3.6} | 1 | 604 | 0.37 |
| {7, 11} | {2.2, 3.6} | 2 | 675 | 0.32 |
| {9, 13} | {2.3, 3.7} | 2 | 2009 | 0.00 |
| {9, 13} | {2.3, 3.7} | 1 | 2191 | 0.00 |
| {8, 12} | {2.3, 3.7} | 2 | 2373 | 0.00 |
| {8, 12} | {2.3, 3.7} | 1 | 2378 | 0.00 |
| {7, 11} | {2.3, 3.7} | 2 | 2807 | 0.00 |
| {7, 11} | {2.3, 3.7} | 1 | 2912 | 0.00 |
Notes. The difference ΔBIC is calculated only within the particular mass profile family – power law or composite. The model setups are ordered from lower to higher BIC values within each mass profile family. The ΔBIC values are calculated relative to the model setup with the lowest BIC value. The relative weights for each model are obtained from ΔBIC adjusted for sparse sampling from the model space as described in Sect. 6.3.
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