Table 1
Fit mismatch for different models as a function of amplitude ratio.
| Ampl. | Keplerian fit | Sine fit | Keplerian |
| ratio | (circular fit) | or sine fit | |
| input | |||
| data | P = 1 | P = 1 | P = 0.5 |
|
|
|||
|
e σ model | σ model | σ model |
| [ K ] [ κ1 ] | [ K ] [ κ1 ] | [ K ] [ κ1 ] | |
|
|
|||
| 1/8 | 0.12 0.012 0.012 | 0.087 0.089 | 0.70 0.71 b |
| 1/2 | 0.36 0.13 0.15 | 0.30 0.36 | 0.60 0.71 b |
| 1/1 | 0.49 0.29 0.42 | 0.48 0.71 b | 0.48 0.71 b |
| 2/1 | 0.58 0.48 1.0 | 0.67 1.4 a | 0.34 0.71 b |
Notes. The mean rms deviations σmodel of the model fits from the simulated input data are given in the 3rd–8th table column for the amplitude ratios (1st column) used for Fig. 1. Means are taken over the 12 probed phases. Each σmodel value is given in two different units, first in units of the RV semi-amplitude K of the Keplerian fit with P = 1 (3rd, 5th, and 7th column) and second in units of the amplitude κ1 of the sine wave with P = 1 corresponding to the outer planet of the simulated 2:1-RCO system (4th, 6th, and 8th column; see Eq. (7)). The 2nd column lists the values of the eccentricity pertinent to the Keplerian fit with P = 1.
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