Table 1 Best-fitting orbital and instrumental parameters from fitting white light curves
From: A benchmark JWST near-infrared spectrum for the exoplanet WASP-39 b
Parameter | Value | Description |
---|---|---|
P | \(4.0552842{\pm }_{0.0000035}^{0.0}\) | Orbital period (d) |
a/Rs | 11.390 ± 0.012 | Scaled semimajor axis |
b | 0.4498 ± 0.0022 | Impact parameter |
i | 87.7369 ± 0.0024 | Inclination (deg) |
e | 0 (fixed) | Eccentricity |
ρs | \(1.6999{\pm }_{0.0055}^{0.0054}\) | Stellar density (g cm−3) |
T0,NIRSpec/PRISM | \(2,459,771.335647{\pm }_{0.000014}^{0.000013}\) | NIRSpec PRISM mid-transit timea (days, BJD TDB) |
T0,NIRCam | \(2,459,783.5015000{\pm }_{0.0000069}^{0.0000068}\) | NIRCam mid-transit timea (days, BJD TDB) |
T0,NIRISS | \(2,459,787.5567843{\pm }_{0.0000073}^{0.0000073}\) | NIRISS mid-transit timea (days, BJD TDB) |
T0,NIRSpec/G395H | \(2,459,791.6120684{\pm }_{0.0000089}^{0.0000094}\) | NIRSpec G395H mid-transit timea (days, BJD TDB) |
σNIRSpec/PRISM | \(218.9{\pm }_{6.8}^{7.0}\) | NIRSpec PRISM photometric jitter (ppm) |
σNIRCam/F322W2 | \(235.6{\pm }_{10.2}^{10.9}\) | NIRCam F322W2 photometric jitter (ppm) |
σNIRCam/F210M | \(75.5{\pm }_{11.1}^{11.3}\) | NIRCam F210M photometric jitter (ppm) |
σNIRISS/order 1 | \(110.3{\pm }_{3.8}^{3.8}\) | NIRISS/SOSS order 1 photometric jitter (ppm) |
σNIRISS/order 2 | \(153.2{\pm }_{7.9}^{8.1}\) | NIRISS/SOSS order 2 photometric jitter (ppm) |
σNIRSpec/G395H/NRS1 | \(138.6{\pm }_{6.0}^{6.5}\) | NIRSpec/G395H NRS1 photometric jitter (ppm) |
σNIRSpec/G395H/NRS2 | \(147.5{\pm }_{7.0}^{7.6}\) | NIRSpec/G395H NRS2 photometric jitter (ppm) |