Table 3.
Orbital and physical parameters for HD 206893c and re-evaluated parameters of HD 206893B.
| HD 206893c | HD 206893B | |
|---|---|---|
| M [MJup] | 12.7 (11.5 ) |
28.0 (26.2 ) |
| a [au] | 3.53 (3.68 ) |
9.6 (9.7 ) |
| e | 0.41 (0.36 ) |
0.14 (0.13 ) |
| R [RJup] | 1.46 |
1.25 |
| Teff [K] |
 |
 |
| log g |
 |
4.66 |
| log(L/L⊙) |
 |
 |
| [Fe/H] |
 |
0.27 |
| Contrast | 8.2 × 10−5 | 1.6 × 10−4 |
Notes. M, a, and e are obtained from the dynamical fits. Values not listed in parentheses are those that use both the astrometry and RVs during the dynamical orbit fit (and are the most trustworthy), while those in parentheses exclude the RV measurements. R, Teff, log g, and log(L/L⊙) are obtained from fitting the spectrophotometry. The fits use a grid of DRIFT-PHOENIX models, assuming no additional dust and using mass priors of 26 ± 2 and 12 ± 1 MJup for B and c, respectively. The contrast refers to that measured in the K band. The luminosity uncertainties for HD 206893c are only the statistical ones within the fits to the DRIFT-PHOENIX models. Further analyses should instead use the more appropriate value of 0.2 dex, which reflects the systematic modeling uncertainties (Sects. 3.2 and 4).
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