Table 3
Sextans structural parameters (median values of the marginalized posterior distributions) derived with the MCMC Hammer, plus 
, classical likelihood ratios and posterior Bayes factors of the different surface density profiles.
| Parameter | Exponential | Sérsic | Plummer | King | IH95 | R16 |
|
|
||||||
| α2000 (°) |
|
|
|
|
|
|
| δ2000 (°) |
|
|
|
|
|
|
| Ellipticity |
|
|
|
|
|
|
| Position angle (°) |
|
|
|
|
|
|
| Sérsic index n | – |
|
– | – | – | – |
| Sérsic factor b(n) | – |
|
– | – | – | – |
| Exponential re (′) |
|
– | – | – |
|
– |
| Plummer rp (′) | – | – |
|
– | – |
|
| Sérsic rs | – |
|
– | – | – | – |
| King rc (′) | – | – | – |
|
|
|
| King rt (′) | – | – | – |
|
|
|
| 2D Half-light rh (′) |
|
|
|
|
 (Exp.) |
(Plummer) |
 (King) |
 (King) |
|||||
|
|
0.92 | 1.03 | 0.88 | 1.06 | 1.22 (Exp.) | 5.53 (Plummer) |
| 1.57 (King) | 3.15 (King) | |||||
|
0.3  |
2.2  |
– | 2.7  |
–63.1  |
–336.9  |
–48.2  |
–160.7  |
|||||
| 2ln(PBF) | 0.8 |
1.8 |
– | 1.6 |
–58.2 |
–331.9 |
| –32.7 |
–157.7 |
|||||
Notes. Classical likelihood ratios and PFBs are colour-coded according to Table C.1, with blue, magenta and red fonts associated to evidences classified as not worth more than a bare mention, positive evidence and very strong evidence, respectively. The last two columns refer to the best-fitting profiles for which the structural parameters and scale radii were fixed to the values derived by IH95 and R16.
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