Table 3.
Best-fitting parameters and uncertainties from MAMPOSSt for models 1 (most likely), 21 (strongest BIC evidence among models with gNFW mass), and 24 (strongest BIC evidence non-Einasto model).
| Parameter | Unit | Range | Model 24 | Model 21 | Model 1 |
|---|---|---|---|---|---|
| mass | NFW | gNFW | gNFW | ||
| velocity anisotropy | T0 (S) | T0 (S) | T | ||
| log r200 | kpc | 3.0–3.6 | 3.23 ± 0.01 | 3.23 ± 0.01 | 3.19 ± 0.02 |
| γ | – | −2–0 | – |
 |
 |
| log rE | kpc | 2.69 ± 0.10 | 2.66 ± 0.08 | 2.67 ± 0.08 | 2.66 ± 0.08 |
| log rS0 | kpc | 2.81 ± 0.11 | 2.82 ± 0.08 | 2.82 ± 0.08 | 2.79 ± 0.08 |
| log rS | kpc | 3.31 ± 0.10 | 3.20 ± 0.08 | 3.19 ± 0.08 | 3.27 ± 0.08 |
 |
– | −1.8–1.8 | – | – | −0.66 ± 0.44 |
 |
– | −1.8–1.8 | – | – | −0.18 ± 0.39 |
 |
– | −1.8–1.8 | – | – | −0.08 ± 0.17 |
 |
– | −1.8–1.8 | – | – | 1.19 ± 0.55 |
 |
– | −1.8–1.8 | – | – | 0.95 ± 0.41 |
 |
– | −1.8–1.8 | 1.24 ± 0.31 | 1.11 ± 0.32 | 1.61 ± 0.33 |
Notes. The parameters are uniformly distributed in the given ranges, except for the scale radii of the E, S0, and S galaxies, for which the mean and uncertainty are given and MAMPOSSt assumes Gaussian priors with dispersion σ equal to the uncertainty and cut at ±3σ. The quoted values for the three models are the MLE estimates and (p84 − p16)/2 estimates from the MCMC chains, where pi are the ith percentiles. Models 21 and 24 are isotropic for both E and S0 galaxies.
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