Open Access
Table D.4
Physical parameters of the planetary system HAT-P-26 derived in this work.
| Parameter | Nomen. | Unit | This Work | Source | Hartman et al. (2011) |
|---|---|---|---|---|---|
| Stellar parameters | |||||
| Spectra class | K1 | ||||
| Effective temperature | Teff | K |  |
EXOFASTV2 HARPS-N | 5079 ± 88 |
| Metallicity | [Fe/H] |  |
EXOFASTV2 HARPS-N | −0.04 ± 0.08 | |
| Projected rotational velocity | v sin i* | km s−1 | 1.9 ± 0.4 | HARPS-N | 1.8 ± 0.5 |
| Luminosity | L* | L⊙ |  |
EXOFASTV2 |  |
| Mass | M* | M⊙ | 0.796 ± 0.015 ± 0.026 | ABSDIM | 0.816 ± 0.033 |
| Radius | R* | R⊙ | 0.916 ± 0.062 ± 0.010 | ABSDIM |  |
| Mean density | ρ* | ρ⊙ | 1.04 ± 0.22 | ABSDIM | – |
| Logarithmic surface gravity | log g* | cgs | 4.416 ± 0.063 ± 0.005 | ABSDIM | 4.56 ± 0.06 |
| Equal Evolutionary Phase | EEP |  |
EXOFASTV2 | – | |
| V-band extinction | AV | mag |  |
EXOFASTV2 | – |
| SED photometry error scaling | σSED |  |
EXOFASTV2 | – | |
| Parallax |  |
mas | 6 999 ± 0 020 | EXOFASTV2 | – |
| Distance | d | pc |  |
EXOFASTV2 |  |
| Age | Gyr |  |
EXOFASTV2 | 10.2 ± 2.5 | |
| Transit parameters | |||||
| Sum of the fractional radii | rp + r* |  |
JKTEBOP | – | |
| Ratio of the fractional radii | rp/r* | 0.0732 ± 0.0011 | JKTEBOP | 0.0737 ± 0.0012 | |
| Impact parameter | b |  |
JKTEBOP |  |
|
| Planetary parameters | |||||
| Mass | Mp | MJup | 0.0577 ± 0.0069 ± 0.0013 | ABSDIM | 0.059 ± 0.007 |
| Radius | Rp | RJup | 0.652 ± 0.055 ± 0.007 | ABSDIM |  |
| Mean density | ρp | ρJup | 0.195 ± 0.055 ± 0.002 | ABSDIM | 0.32 ± 0.08 |
| Surface gravity | gp | m s−2 | 3.37 ± 0.69 | ABSDIM |  |
| Equilibrium temperature | Teq | K | 1080 ± 39 | ABSDIM |  |
| Safronov number | Θ | 0.0106 ± 0.0015 ± 0.0001 | ABSDIM | 0.012 ± 0.002 | |
| Orbital parameters | |||||
| Reference epoch of mid-transit | T0 | BJD(TDB) | 2 455 304.65234(35) | Timing fit | 2 455 304.65122 (35) |
| Period | Porb | days | 4.23450213 (76) | Timing fit | 4.234516 (15) |
| Inclination | i | degree | 87.20 ± 0.86 | JKTEBOP |  |
| Semi-major axis | a | au | 0.04748 ± 0.00030 ± 0.00052 | ABSDIM | 0.0479 ± 0.0006 |
| RV-curve semi-amplitude | KA | m s−1 | – | – | 8.5 ± 1.0 |
| Barycentric RV | γ | km s−1 | Unconstrained | RM fit | 14.72 ± 0.10 |
| Projected spin-orbit angle | λ | degree | Unconstrained | RM fit | – |
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