Table 1
Summary of the best-fit parameters found for GJ3470b.
| Parameter | Demory et al. (2013) | This work | This work | Unit |
| (IRAC 4.5μ) | (LBC F972N20) | (LBC Uspec) | ||
|
|
||||
| Central wavelength λc | 4520 | 963.5 | 357.5 | nm |
| Radius ratio k = Rp/R⋆ |
|
|
0.0821 ± 0.0013 | – |
| Sum of radii Σ = (Rp + R⋆)/a | 0.0819 ± 0.0025 |
|
– | |
| a/R⋆ |
|
13.18 ± 0.47 | – | |
| Orbital inclination i |
|
a
|
degrees | |
| Impact parameter b = acosi/R⋆ |
|
|
0.44 ± 0.06 | – |
| Eccentricity e | 0.0b | 0.0b | 0.0b | – |
| Linear LD coeff. u1 | 0.013 ± 0.015 | 0.25 ± 0.04 | 0.49 ± 0.03c | – |
| Quadratic LD coeff. u2 | 0.181 ± 0.010 | 0.30 ± 0.03c | 0.29 ± 0.03c | – |
| Transit duration W = T14 | 0.0790 ± 0.0005 |
|
|
days |
| 113.8 ± 0.7 |
|
|
minutes | |
| Central time T0 | 6090.47690 ± 0.00015 | 6340.72559 a |
BJD(TDB)d | |
| Orbital period P | 3.33671 ± 0.00005 | 3.336 649 ± 0.000 002e | days | |
Notes.
Fitted on the F972N20 light curve and then assumed as input distribution for the Uspec Monte Carlo simulation (see text for details).
Fixed as Gaussian priors to the theoretical values interpolated from Claret et al. (2012), assuming the atmospheric parameters estimated by Demory et al. (2013) and their uncertainties.
BJD(TDB) − 2 450 000 (Eastman et al. 2010).
Linear ephemeris evaluated by combining our T0 with that published by Demory et al. (2013).
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