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Table 4
Parameters of C4780 from the combined lightcurve and RV modeling.
| Symbol | Parameter name | Value | Units |
|
|
|||
| Orbital parameters | |||
| P | Orbital period | 20.6841 ± 0.0006 | day |
| ecosω | Eccentricity × cosine longitude of periastron |
|
– |
| esinω | Eccentricity × sine longitude of periastron | − 0.314 ± 0.006 | – |
| K | RV semiamplitude | 6.816 ± 0.039 | km s-1 |
| γ | Center-of-mass RV | 19.608 ± 0.038 | km s-1 |
| T | Time of periastron* |
|
BJD |
| f | Mass function* | 0.000522 ± 0.000010 | M ⊙ |
|
|
|||
| Photometric parameters | |||
| T 0 | Time of center of primary transit | 2 454 240.3144 ± 0.0023 | BJD |
| J s | Surface-brightness ratio |
|
– |
| r t | Fractional sum of radii** (=(R1 + R2)/a) |
|
– |
| k | Ratio of radii** (=R2/R1) |
|
– |
| x | Impact parameter** (= ) |
0.0 ± 0.2 | – |
| L 3 | Third-light (blending) fraction*** |
|
– |
| u p | Limb-darkening coefficient of primary*** |
|
– |
| i | Inclination* | 90.0 ± 0.4 | degree |
|
|
|||
| Parameters estimated assuming M1 = 1.2 ± 0.2 M⊙ | |||
| q | Mass ratio* (M2/M1) | 0.080 ± 0.005 | – |
| a | Semi-major axis* | 0.16 ± 0.01 | AU |
| M 2 | Mass of secondary* | 0.096 ± 0.011 | M ⊙ |
| R 1 | Radius of primary* | 1.07 ± 0.07 | R ⊙ |
| R 2 | Radius of secondary* |
|
R ⊙ |
| log g1 | Surface gravity of primary* |
|
cgs |
Notes.
(**)
See Tamuz et al. (2006) and Mazeh et al. (2006) for the reasoning behind this definition.
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